Tag Archives: vacuum pump

China 110V 220V Dual Voltage Double stage rotary vacuum pump Air conditioning Refrigerant vacuum pump HVAC air Pump

Applicable Industries: Hotels, Manufacturing Plant, Home Use
Weight (KG): 10.8
Showroom Location: None
Video outgoing-inspection: Provided
Machinery Test Report: Provided
Warranty of core components: 1 Year
Core Components: Motor
Warranty: 1 Year

Place of Origin:zHangZhoug china
After-sales Service Provided:Free spare parts
Q1. What’ Customized High Quality Spiral Gear Motor Shaft Bevel Gear Shaft For Mechanical Assembly s the MOQ for your production? A: The MOQ is 50pcs or depends on your products requirements. For sample order, 1 pcs isacceptable.Q2. Is it all right to make customer’s own brand name? A: OEM is ok. Q3. Are you a manufacturer or trading company? A: We are manufacturing company.Q4: When can I get the price?A: We usually quote within 24 hours after we get your inquiry. If you are very urgent to get theprice, Hot Sale Single State Fully Automated Production Worm Geared Motor Gear Box NMRV030 Ratio7.5-100 Worm Gear Speed Reducers please call us directly or inform us by email, so that we will regard your inquiry in priority. Q5: How can I get a sample to check the product quality for verification? A: After price confirmation, you can order the samplesfor testing. You can pay for the sample charges by T/T payment or Paypal, M10 Marine Transmission sample charges including the sample cost and Freight.Moreover, sample charges will be returned to you on your future mass order.

Vacuum Pump

Types of vacuum pumps

A vacuum pump is a device that draws gas molecules from a sealed volume and maintains a partial vacuum. Its job is to create a vacuum in a volume, usually one of several. There are several types of vacuum pumps, such as root pumps, diaphragm pumps, rotary piston pumps, and self-priming centrifugal pumps.

The diaphragm pump is a dry positive displacement vacuum pump

Diaphragm pumps are a versatile type of vacuum pump. They can be installed in a variety of scenarios including container emptying, positive suction, and simultaneous fluid mixing. Their performance depends on the stiffness and durability of the diaphragm, which in turn depends on the material.
They have good performance when running in dry mode. Diaphragm pumps work very similarly to the human heart, which is why they are often used to create artificial hearts. In addition, the diaphragm pump is self-priming and has high efficiency. They are also capable of handling the most viscous liquids and are used in almost all industries.
However, this type of pump has several disadvantages. One of them is that they are difficult to restart after a power outage. Another disadvantage is that they can generate a lot of heat. Fortunately, this heat is carried away by airflow. However, this heat builds up in the multistage pump. If this happens, the diaphragm or motor may be damaged. Diaphragm pumps operating in two or more stages should be fitted with solenoid valves to maintain vacuum stability.
Diaphragm pumps are a good choice for drying processes where hygiene is important. These pumps have check valves and rubber or Teflon diaphragms. Diaphragm pumps are also ideal for high viscosity applications where shear sensitivity is important.

Roots pumps are dry method centrifugal pumps

Roots pumps use a vane rotor pump with two counter-rotating vanes that move in opposite directions to move the gas. They are often the first choice for high-throughput process applications. Depending on the size and number of blades, they can withstand up to 10 Torr.
Centrifugal pumps have several advantages, including the ability to handle corrosive fluids and high temperatures. However, when choosing a pump, it is essential to choose a reputable manufacturer. These companies will be able to advise you on the best pump design for your needs and provide excellent after-sales support. Roots pumps can be used in a wide range of industrial applications including chemical, food, and biotechnology.
The Roots pump is a dry centrifugal pump whose geometry enables it to achieve high compression ratios. The screw rotors are synchronized by a set of timing gears that allow gas to pass in both directions and create a compressed state in the chamber. The pre-compressed gas is discharged through a pressure connection and cooled with water. Some pumps are also able to accept additional cooling gas, but this should be done with caution.
The size of the impeller plays an important role in determining the pump head. The impeller diameter determines how high the pump can lift the liquid. Impeller speed also affects the head. Since the head is proportional to the specific gravity of the liquid, the available suction pressure will be proportional to the density of the liquid. The density of water is about 1.2 kg/m3, and the suction pressure of the centrifugal pump is not enough to lift the water.

The rotary vane pump is a self-priming centrifugal pump

A rotary vane pump is a centrifugal pump with a circular pump head and a cycloid cam that supports the rotor. The rotor is close to the cam wall, and two side plates seal the rotor. Vanes in vane pumps are installed in these cavities, and the rotor rotates at high speed, pushing fluid in and out of the pump. The pump offers several advantages, including a reversible design and the ability to handle a wide variety of clean fluids.
Agknx Pumps manufactures a wide range of vane pumps that combine high performance, low cost, and easy maintenance. These pumps handle medium to high viscosity liquids up to 500 degrees Fahrenheit and 200,000 SSU.
The suction side of the rotary vane pump has a discharge port, and the valve prevents the backflow of the discharge air. When the maximum pressure is reached, the outlet valve closes to prevent the backflow of exhaust gas. The mechanical separation step separates the oil from the gas in the pump circuit and returns the remaining oil particles to the sump. The float valve then reintroduces these oil particles into the oil circuit of the pump. The gas produced is almost oil-free and can be blown out of a pipe or hose.
Rotary vane pumps are self-priming positive displacement pumps commonly used in hydraulic, aeration, and vacuum systems. Unlike gear pumps, rotary vane pumps can maintain high-pressure levels while using relatively low suction pressures. The pump is also very effective when pumping viscous or high-viscosity liquids.
Vacuum Pump

Rotary piston pumps are dry method positive displacement pumps

Rotary piston pumps are dry positive displacement pumps designed to deliver high-viscosity fluids. They are capable of pumping a variety of liquids and can run dry without damaging the liquid. Rotary piston pumps are available in a variety of designs. Some are single shafts, some are two shafts and four bearings.
Positive displacement pumps operate slower than centrifugal pumps. This feature makes the positive displacement pump more sensitive to wear. Piston and plunger reciprocating pumps are particularly prone to wear. For more demanding applications, progressive cavity, diaphragm or lobe pumps may be a better choice.
Positive displacement pumps are typically used to pump high-viscosity fluids. This is because the pump relies on a mechanical seal between the rotating elements and the pump casing. As a result, when fluids have low viscosity, their performance is limited. Additionally, low viscosity fluids can cause valve slippage.
These pumps have a piston/plunger arrangement using stainless steel rotors. Piston/piston pumps have two cavities on the suction side. The fluid then flows from one chamber to the other through a helical motion. This results in very low shear and pulsation rates. The pump is usually installed in a cylindrical housing.

Rotary vane pump corrosion resistance

Rotary vane vacuum pumps are designed for use in a variety of industries. They feature plasma-treated corrosion-resistant parts and anti-suck-back valves to help reduce the number of corrosive vapors entering the pump. These pumps are commonly used in freeze dryers, vacuum ovens, and degassing processes. The high flow rates they provide in their working vacuum allow them to speed up processes and reduce the time it takes to run them. Plus, they have energy-efficient motors and silent volume. <br/While rotary vane vacuum pumps are relatively corrosion resistant, they should not be used for aggressive chemicals. For these chemicals, the most suitable pump is the chemical mixing pump, which combines two types of pumps to improve corrosion resistance. If the application requires a more powerful pump, a progressive cavity pump (eg VACUU*PURE 10C) is suitable.
Oil seals used in rotary vane pumps are important to pump performance. The oil seal prevents corrosion of the aluminum parts of the rotary vane pump and prolongs the service life. Most rotary vane vacuum pumps have a standard set of components, although each component may have different oil seals.
Rotary vane vacuum pumps are the most common type of positive displacement pump. They provide quiet operation and long service life. They are also reliable and inexpensive and can be used in a variety of applications.
Vacuum Pump

Roots pumps are primarily used as a vacuum booster

Root vacuum pumps are mainly used as vacuum boosters in industrial applications. They need a thorough understanding of operating principles and proper maintenance to function properly. This course is an introduction to Roots vacuum pumps, covering topics such as pump principles, multi-stage pumps, temperature effects, gas cooling, and maintenance.
Roots pumps have many advantages, including compact and quiet operation. They do not generate particles and have a long service life. They also don’t require oil and have a small footprint. However, Roots pumps have several disadvantages, including relatively high maintenance costs and low pumping speeds near atmospheric pressure.
Root vacuum pumps are often used with rotary vane vacuum pumps. They work on the same principle, the air enters a conveying unit formed by two rolling pistons in the housing. The piston heads are separated from each other, and the air passes through the unit without being reduced until it is discharged. When the air in the next unit reaches a higher absolute pressure, it is expelled from the last unit.
Roots pumps can be classified as sheathed or sealed. Roots pumps with sealed motors are suitable for pumping toxic gases. They have less clearance between the stator and motor rotor and have a sealed tank.

China 110V 220V Dual Voltage Double stage rotary vacuum pump Air conditioning Refrigerant vacuum pump HVAC air Pump    China 110V 220V Dual Voltage Double stage rotary vacuum pump Air conditioning Refrigerant vacuum pump HVAC air Pump
editor by czh2023-07-03

China 12CFM Vacuum Pump Copper motor air pump Double Stage refrigerant vacuum pump 1HP

Warranty: 1 YEAR
Customized support: OEM, ODM
Model Number: VP2100 VP2120
Application: Automotive Industry, CZPT OEM, Industrial Boilers, Machining, Pharmaceutical industry, Air conditioning repair, Printing industry
Horsepower: 1HP
Power Source: Electric
Pressure: Low Pressure
Structure: Vacuum Pump
Cable Length: 1.2 meter
Outlet Size: 1/4
Voltage: 110V ~240V
Power: 1HP 750W
Coil material: Copper
Inlet port: 1/4
oil capacity: 700ml
After Warranty Service: Video technical support
Certification: ETL,CE,ISO-9001
After-sales Service Provided: Online support
Dimension(L*W*H): 390*140*250mm
Net Weight: 16
Packaging Details: Vacuum pump with manual and pump oil package by color box ,and cartons. Big Quantity we could pakage by Pallet,or Wooden case.
Port: HangZhou/ZheJiang

Product feature
1.High efficiency filter,smoke less.
2.Copper wire motor,long service life.
3.Big sight glass for monitoring oil level,prevent oil lack.
4.The overall design of pump and motor is more portable.
5.Low maintenance cost
6.One year warranty

Packaging & ShippingPacking Details

ShipmentRetail Products and Sample ,we shipment by courier,such as DHL, Stainless Steel 35716 Single Wheel Sheave Swivel Type Eye Wire Rope Pulley UPS etc.about 3~5 working days,Big quantity we shipment by sea.LCL about 20 days,FCL about 30~35days We also shipment by Air transport and by TrainIf you are in Brazil, Argentina, Chile, Turkey, please provide your CNPJ / CPF / VAT number if send by courier,pls tell me your specific address(street name,city,state,country),zip code, etc.then we could check how much postageWe promiss the items are the same as they described, but we have the right to change the neutral package without logo, which might be different as it appears on the pictures.If the parcel is failed delivered since the wrong or lacking necessary shipping information, or you do not do the customs clearance, we will not bear any responsibility.

Our Services Pre-sale service 1.Professional customer service gives you advice on product purchase 2.Welcome to visit our factory.3.We can provide samples for testing.
After-sale service1. Our products offer a one-year warranty,the trained engineers will fix it for you.2.Free replacement of small parts.

Company InformationHangZhou CZPT MECHANICAL AND ELECTRICAL PRODUCTS CO., heavy duty concrete grinder industrial vacuum cleaner LTDwith over 10 years experiences,Yangyi gained rich experiences and technologies on manufacturing/trading on vacuum pump,recovery machine,tools ,gauge,and scale,leak detector etc.stand on perfect quality control system and advanced testing equipments ,Yangyi produced stable and excellent quality products to customers all over the world,and CZPT is also registered as a well known local brand in Chinese Market,Following the company’s conception of “Technology leads Development,Quality strengthen Viability”,Yangyi’s production has reached in many fields such as refrigeration maintain,printing machine,medical equipment, export to Mexico Aluminum u shape cabinet sliding door roller caster wheel pulley vacuum packing,gas analyze and thermoplastic molding etc.we warmly welcome customers all over the world to visit our company abd seek for long term cooperation for future.

Contact information

Vacuum Pump

Basic knowledge of vacuum pump

A vacuum pump is a device that draws gas molecules from a sealed volume and maintains a partial vacuum. Its main job is to create a relative vacuum within a given volume or volumes. There are many types of vacuum pumps. This article will describe how they work, their types, and their applications.

How it works

A vacuum pump is a mechanical device that removes gas from a system by applying it to a higher pressure than the surrounding atmosphere. The working principle of the vacuum pump is based on the principle of gas transfer and entrapment. Vacuum pumps can be classified according to their vacuum level and the number of molecules that can be removed per cubic centimeter of space. In medium to high vacuum, viscous flow occurs when gas molecules collide with each other. Increasing the vacuum causes molecular or transitional flow.
A vacuum pump has several components that make it a versatile tool. One of the main components is the motor, which consists of a rotor and a stator. The rotor and stator contain coils that generate a magnetic field when excited. Both parts must be mounted on a base that supports the weight of the pump. There is also an oil drain that circulates oil throughout the system for lubrication and cooling purposes.
Another type of vacuum pump is the liquid ring vacuum pump. It works by positioning the impeller above or below the blades. Liquid ring pumps can also adjust the speed of the impeller. However, if you plan to use this type of pump, it is advisable to consult a specialist.
Vacuum pumps work by moving gas molecules to areas of higher or lower pressure. As the pressure decreases, the removal of the molecules becomes more difficult. Industrial vacuum systems require pumps capable of operating in the 1 to 10-6 Torr range.


There are different types of vacuum pumps. They are used in many different applications, such as laboratories. The main purpose of these pumps is to remove air or gas molecules from the vacuum chamber. Different types of pumps use different techniques to achieve this. Some types of pumps use positive displacement, while others use liquid ring, molecular transfer, and entrapment techniques.
Some of these pumps are used in industrial processes, including making vacuum tubes, CRTs, electric lights, and semiconductor processing. They are also used in motor vehicles to power hydraulic components and aircraft. The gyroscope is usually controlled by these pumps. In some cases, they are also used in medical settings.
How a vacuum pump works depends on the type of gas being pumped. There are three main types: positive displacement, negative displacement, and momentum transfer. Depending on the type of lubrication, these principles can be further divided into different types of pumps. For example, dry vacuum pumps are less sensitive to gases and vapors.
Another type of vacuum pump is called a rotary vane pump. This type of pump has two main components, the rotor and the vacuum chamber. These pumps work by rotating moving parts against the pump casing. The mating surfaces of rotary pumps are designed with very small clearances to prevent fluid leakage to the low pressure side. They are suitable for vacuum applications requiring low pulsation and high continuous flow. However, they are not suitable for use with grinding media.
There are many types of vacuum pumps and it is important to choose the right one for your application. The type of pump depends on the needs and purpose of the system. The larger ones can work continuously, and the smaller ones are more suitable for intermittent use.
Vacuum Pump


Vacuum pumps are used in a variety of industrial and scientific processes. For example, they are used in the production of vacuum tubes, CRTs, and electric lamps. They are also used in semiconductor processing. Vacuum pumps are also used as mechanical supports for other equipment. For example, there may be multiple vacuum pumps on the engine of a motor vehicle that powers the hydraulic components of an aircraft. In addition, they are often used in fusion research.
The most common type of vacuum pump used in the laboratory is the rotary vane pump. It works by directing airflow through a series of rotating blades in a circular housing. As the blades pass through the casing, they remove gas from the cavity and create a vacuum. Rotary pumps are usually single or double-stage and can handle pressures between 10 and 6 bar. It also has a high pumping speed.
Vacuum pumps are also used to fabricate solar cells on wafers. This involves a range of processes including doping, diffusion, dry etching, plasma-enhanced chemical vapor deposition, and bulk powder generation. These applications depend on the type of vacuum pump used in the process, and the vacuum pump chosen should be designed for the environment.
While there are several types of vacuum pumps available, their basic working principles remain the same. Each has different functions and capacities, depending on the type of vacuum. Generally divided into positive displacement pump, rotary vane pump, liquid ring pump, and molecular delivery pump.


The party responsible for general maintenance and repairs is the Principal Investigator (PI). Agknxs must be followed and approved by the PI and other relevant laboratory personnel. The Agknx provides guidelines for routine maintenance of vacuum pump equipment. Agknxs are not intended to replace detailed routine inspections of vacuum pump equipment, which should be performed by certified/qualified service personnel. If the device fails, the user should contact PI or RP for assistance.
First, check the vacuum pump for any loose parts. Make sure the inlet and outlet pressure gauges are open. When the proper pressure is shown, open the gate valve. Also, check the vacuum pump head and flow. Flow and head should be within the range indicated on the label. Bearing temperature should be within 35°F and maximum temperature should not exceed 80°F. The vacuum pump bushing should be replaced when it is severely worn.
If the vacuum pump has experienced several abnormal operating conditions, a performance test should be performed. Results should be compared to reference values ​​to identify abnormalities. To avoid premature pump failure, a systematic approach to predictive maintenance is essential. This is a relatively new area in the semiconductor industry, but leading semiconductor companies and major vacuum pump suppliers have yet to develop a consistent approach.
A simplified pump-down test method is proposed to evaluate the performance of vacuum pumps. The method includes simulated aeration field tests and four pump performance indicators. Performance metrics are evaluated under gas-loaded, idle, and gas-load-dependent test conditions.
Vacuum Pump


The total cost of a vacuum pump consists of two main components: the initial investment and ongoing maintenance costs. The latter is the most expensive component, as it consumes about four to five times the initial investment. Therefore, choosing a more energy-efficient model is a good way to reduce the total system cost and payback period.
The initial cost of a vacuum pump is about $786. Oil-lubricated rotary vane pumps are the cheapest, while oil-free rotary vane pumps are slightly more expensive. Non-contact pumps also cost slightly more. The cost of a vacuum pump is not high, but it is a factor that needs careful consideration.
When choosing a vacuum pump, it is important to consider the type of gas being pumped. Some pumps are only suitable for pumping air, while others are designed to pump helium. Oil-free air has a different pumping rate profile than air. Therefore, you need to consider the characteristics of the medium to ensure that the pump meets your requirements. The cost of a vacuum pump can be much higher than the purchase price, as the daily running and maintenance costs can be much higher.
Lubricated vacuum pumps tend to be more durable and less expensive, but they may require more maintenance. Maintenance costs will depend on the type of gas that needs to be pumped. Lighter gases need to be pumped slowly, while heavier gases need to be pumped faster. The maintenance level of a vacuum pump also depends on how often it needs to be lubricated.
Diaphragm vacuum pumps require regular maintenance and oil changes. The oil in the diaphragm pump should be changed every 3000 hours of use. The pump is also resistant to chemicals and corrosion. Therefore, it can be used in acidic and viscous products.

China 12CFM Vacuum Pump Copper motor air pump Double Stage refrigerant vacuum pump 1HP    China 12CFM Vacuum Pump Copper motor air pump Double Stage refrigerant vacuum pump 1HP
editor by czh2023-06-27

China Standard Paper Mill Direct Drive Water Ring Vacuum Pump with Hot selling

Product Description

                                                     Paper Mill Direct Drive Water Ring Vacuum Pump

Product Description

2BE1 series water ring vacuum pumps are of single stage and single acting configuration and are generally used for sucking gases that contains no solids,and are dissolved slightly or insoluble in working liquid.
When the wetted components of a vacuum pump are made of or coated with corrosion-free materials,it can suck corrosive gases or use corrosive liquids as it’s working liquid.


Product name Vacuum pump
Frequency 50hz
Ultimate vacuum 32mbar 
Noise 65-70db
Size 520*140*250
Rotating speed 1200
Discharge pipe 37mm
Suction pipe 65mm
Flow 100-200l/min
Net Weight 45kg

Company information

1.CZPT Machinery Manufacturing Co., Ltd. was founded in 1985, it has a leading position in paper machinery of China.We have a professional production, research and development, sales team. Our main products are paper machine,pulping equipment and paper machine parts.And we have the product certificate,we will meet and exceed your expectations. Please contact our custom service for details .
2.Following is main introduction of our company :
(1). We are a manufacturer and we have import and export rights.
(2). We produce wonderful environmental protection machines and solutions, pulp and paper making machines and solutions as well as tissue paper converting machinery and solutions,
(3). Our main manufacturing facility which spans nearly 30,000m2.
(4). We have achieved a total of 32 patents over the past few years.

3.Our factory! 

Our Service 

1.To provide you with the transformation and upgrading of plant equipment programs, in order to improve the yield and quality
2.Always online to answer technical questions
3.The customer arrives China, accompanied this translation facility until send customers back
4.send engineers to the customer’s national installation and commissioning of the machine, to ensure the normal operation of the machine
5.Our products can guarantee excellent quality, if there is any quality problems, we flew to your country for your free service
These are our clients in Iran ,Pakistan and India.
Our products are sold to more than 100 countries all over the world.

We go to world famous exhibitions every year.
Constantly promote and publicize the company’s brand, to the majority of customers to show the strength and image of the company.The high concentration of visitor flow, information flow and capital flow in the exhibition can help our company learn from each other and improve its competitiveness.

The company has passed ISO9001:2000 international quality management system certification, self-supporting and export rights.

Packing and shipping 

1.A beautiful wrapping paper can add the quality of products and also make customers happy.
We supply custom service for all beautiful wrapping paper. For example, customized logo, sizes, colors and thickness.
2.products will packaged according to their shapes, weight, transport distance and transport modes. large machines will be packaged in sections. every part of export machinery will be in standard export package-seaworthy wooden case, waterproof film, straw rope, carton box etc., which will ensure the intactness of products.


Q: Why don’t person reply to me?

A: Our person is 24 hours online. When nobody reply you , please leave your requirements on email or chat tool,we will reply you as soon as possible

Q: What can I get suitable scheme basis on my requirement ?

A: Please tell me what raw material you want use and how many capacity you want produce per day when you sent email to me .We will be provide better offer for you .

Q: Will you send engineers to design our plant and install the equipment?

A: Yes, Our factory will arrange engineer to supply the professional drawing and install and train the workers about adjusting the equipemnt ,disposing of the trouble maybe happen and maintenance of the machine , after training ,the workers will get work license we distribute .

Q: What is your terms of payment ?

A: One Year.We shall supply free exchange for spare parts. After this period, we shall charge at low cost to keep after service .You will be welcome to contact us with any problem might occurred .

Contact us
If you are interested in any of our prodcuts, please feel free to contact us directly.Welcome to visit our company if you are available.
Accept custom, only need to provide related parameters, we will design for you to make you satisfied with the machine.

Types of Screw Shafts

Screw shafts come in various types and sizes. These types include fully threaded, Lead, and Acme screws. Let’s explore these types in more detail. What type of screw shaft do you need? Which 1 is the best choice for your project? Here are some tips to choose the right screw:

Machined screw shaft

The screw shaft is a basic piece of machinery, but it can be further customized depending on the needs of the customer. Its features include high-precision threads and ridges. Machined screw shafts are generally manufactured using high-precision CNC machines or lathes. The types of screw shafts available vary in shape, size, and material. Different materials are suitable for different applications. This article will provide you with some examples of different types of screw shafts.
Ball screws are used for a variety of applications, including mounting machines, liquid crystal devices, measuring devices, and food and medical equipment. Various shapes are available, including miniature ball screws and nut brackets. They are also available without keyway. These components form a high-accuracy feed mechanism. Machined screw shafts are also available with various types of threaded ends for ease of assembly. The screw shaft is an integral part of linear motion systems.
When you need a machined screw shaft, you need to know the size of the threads. For smaller machine screws, you will need a mating part. For smaller screw sizes, the numbers will be denominated as industry Numeric Sizes. These denominations are not metric, but rather in mm, and they may not have a threads-per-inch designation. Similarly, larger machine screws will usually have threads that have a higher pitch than those with a lower pitch.
Another important feature of machine screws is that they have a thread on the entire shaft, unlike their normal counterparts. These machine screws have finer threads and are intended to be screwed into existing tapped holes using a nut. This means that these screws are generally stronger than other fasteners. They are usually used to hold together electronic components, industrial equipment, and engines. In addition to this, machine screws are usually made of a variety of materials.

Acme screw

An Acme screw is the most common type of threaded shaft available. It is available in a variety of materials including stainless steel and carbon steel. In many applications, it is used for large plates in crushing processes. ACME screws are self-locking and are ideal for applications requiring high clamping force and low friction. They also feature a variety of standard thread forms, including knurling and rolled worms.
Acme screws are available in a wide range of sizes, from 1/8″ to 6″. The diameter is measured from the outside of the screw to the bottom of the thread. The pitch is equal to the lead in a single start screw. The lead is equal to the pitch plus the number of starts. A screw of either type has a standard pitch and a lead. Acme screws are manufactured to be accurate and durable. They are also widely available in a wide range of materials and can be customized to fit your needs.
Another type of Acme screw is the ball screw. These have no back drive and are widely used in many applications. Aside from being lightweight, they are also able to move at faster speeds. A ball screw is similar to an Acme screw, but has a different shape. A ball screw is usually longer than an Acme screw. The ball screw is used for applications that require high linear speeds. An Acme screw is a common choice for many industries.
There are many factors that affect the speed and resolution of linear motion systems. For example, the nut position and the distance the screw travels can all affect the resolution. The total length of travel, the speed, and the duty cycle are all important. The lead size will affect the maximum linear speed and force output. If the screw is long, the greater the lead size, the higher the resolution. If the lead length is short, this may not be the most efficient option.

Lead screw

A lead screw is a threaded mechanical device. A lead screw consists of a cylindrical shaft, which includes a shallow thread portion and a tightly wound spring wire. This spring wire forms smooth, hard-spaced thread convolutions and provides wear-resistant engagement with the nut member. The wire’s leading and trailing ends are anchored to the shaft by means appropriate to the shaft’s composition. The screw is preferably made of stainless steel.
When selecting a lead screw, 1 should first determine its critical speed. The critical speed is the maximum rotations per minute based on the natural frequency of the screw. Excessive backlash will damage the lead screw. The maximum number of revolutions per minute depends on the screw’s minor diameter, length, assembly alignment, and end fixity. Ideally, the critical speed is 80% of its evaluated critical speed. A critical speed is not exceeded because excessive backlash would damage the lead screw and may be detrimental to the screw’s performance.
The PV curve defines the safe operating limits of a lead screw. This relationship describes the inverse relationship between contact surface pressure and sliding velocity. As the PV value increases, a lower rotation speed is required for heavier axial loads. Moreover, PV is affected by material and lubrication conditions. Besides, end fixity, which refers to the way the lead screw is supported, also affects its critical speed. Fixed-fixed and free end fixity are both possible.
Lead screws are widely used in industries and everyday appliances. In fact, they are used in robotics, lifting equipment, and industrial machinery. High-precision lead screws are widely used in the fields of engraving, fluid handling, data storage, and rapid prototyping. Moreover, they are also used in 3D printing and rapid prototyping. Lastly, lead screws are used in a wide range of applications, from measuring to assembly.

Fully threaded screw

A fully threaded screw shaft can be found in many applications. Threading is an important feature of screw systems and components. Screws with threaded shafts are often used to fix pieces of machinery together. Having fully threaded screw shafts ensures that screws can be installed without removing the nut or shaft. There are 2 major types of screw threads: coarse and fine. When it comes to coarse threads, UTS is the most common type, followed by BSP.
In the 1840s, a British engineer named Joseph Whitworth created a design that was widely used for screw threads. This design later became the British Standard Whitworth. This standard was used for screw threads in the United States during the 1840s and 1860s. But as screw threads evolved and international standards were established, this system remained largely unaltered. A new design proposed in 1864 by William Sellers improved upon Whitworth’s screw threads and simplified the pitch and surface finish.
Another reason for using fully threaded screws is their ability to reduce heat. When screw shafts are partially threaded, the bone grows up to the screw shaft and causes the cavity to be too narrow to remove it. Consequently, the screw is not capable of backing out. Therefore, fully threaded screws are the preferred choice for inter-fragmentary compression in children’s fractures. However, surgeons should know the potential complication when removing metalwork.
The full thread depth of a fully threaded screw is the distance at which a male thread can freely thread into the shaft. This dimension is typically 1 millimeter shy of the total depth of the drilled hole. This provides space for tap lead and chips. The full-thread depth also makes fully threaded screws ideal for axially-loaded connections. It is also suitable for retrofitting applications. For example, fully threaded screws are commonly used to connect 2 elements.

Ball screw

The basic static load rating of a ball screw is determined by the product of the maximum axial static load and the safety factor “s0”. This factor is determined by past experience in similar applications and should be selected according to the design requirements of the application. The basic static load rating is a good guideline for selecting a ball screw. There are several advantages to using a ball screw for a particular application. The following are some of the most common factors to consider when selecting a ball screw.
The critical speed limit of a ball screw is dependent on several factors. First of all, the critical speed depends on the mass, length and diameter of the shaft. Second, the deflection of the shaft and the type of end bearings determine the critical speed. Finally, the unsupported length is determined by the distance between the ball nut and end screw, which is also the distance between bearings. Generally, a ball screw with a diameter greater than 1.2 mm has a critical speed limit of 200 rpm.
The first step in manufacturing a high-quality ball screw is the choice of the right steel. While the steel used for manufacturing a ball screw has many advantages, its inherent quality is often compromised by microscopic inclusions. These microscopic inclusions may eventually lead to crack propagation, surface fatigue, and other problems. Fortunately, the technology used in steel production has advanced, making it possible to reduce the inclusion size to a minimum. However, higher-quality steels can be expensive. The best material for a ball screw is vacuum-degassed pure alloy steel.
The lead of a ball screw shaft is also an important factor to consider. The lead is the linear distance between the ball and the screw shaft. The lead can increase the amount of space between the balls and the screws. In turn, the lead increases the speed of a screw. If the lead of a ball screw is increased, it may increase its accuracy. If not, the lead of a ball screw can be improved through preloading, lubrication, and better mounting accuracy.

China Standard Paper Mill Direct Drive Water Ring Vacuum Pump   with Hot sellingChina Standard Paper Mill Direct Drive Water Ring Vacuum Pump   with Hot selling

China Custom Stepper Motor Drive Dosing Pump for Ceramic Vacuum Filter wholesaler

Product Description

Dosing Machine

Product Description

1. Constitutes of the dosing equipment
Major components of this equipment: 1. solution tank 2. stirrer 3.liquidometer 4.filter 5.safety valve 6.
dosing dump. 7.bumper 8.ball valve, check valve and stop valve. 9. pressug gege and corresponding pipes.
Explanation: the pumping capacity of diaphragm dosing pump is 5001/h and pressure 0-1.0mp.
motor capacity of diaphragm dosing pump is 0. 75 W with insulation grade of level F; the stirrer is comprisee
of motor and stiring rod with motor capacity of 0.55kW; all inner components of the equipment including
working platform and handrail are all installed on the same carbon steel base plate.

2.Main Characteristics of the Dosing System
1.concentration design, small floor space, simple structure and stable performance; 2. accurate
measurement, convenient regulation, economic and easy installation and maintenance; 3. suction type
installation of the pump, no-blocking, long non-failure operation time and low operating cost;  4. good
corrosion resistance performance and long lifespan; 5. material of the liquor tank: PE, fiberglass, coal steel
rubber liner, 304 stainless steel, 316 stainless steel; 6. material of the stirrer: 304 stainless steel and 31 6 stainless
steel; 7. material of overflowing section of the dosing pump: PP. PVC. PVDE. SS316

3. Applications
It is widely used in raw material of power plant, boiler feed water and oil field surface gathering
dehydration processing system, various petrochemical dosing system and waste water treatment
system, such as adding coagulant, phosphate, ammonia cal liquor, whitewash, corrosion inhibitor
antisludging agent and germicide, algicide agent, etc.

Company Profile

Our Company

ZheJiang Botong Environmental Production Technology Co., Ltd. is engaged in mining machinery production enterprises for many years. Our subsidiary includes Filta(ZheJiang ) Environmental Technology Ltd. Mechanical product development and production of varous types, mainly the production of mineral processing equipment, such as Ceramic Filter, Thickener, Cyclone, Dosing Machine.

The company has aleays been to adhere to the “Build reputation with quality, Expand the market with reputation, seek benifits from the market and seek development with benefits. ” Development concept.

Our company offers variety of products which can meet your multifarious demands. We adhere to the management principles of “quality first, customer first and credit-based” since the establishment of the company and always do our best to satisfy potential needs of our customers. Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a CZPT situation since the trend of economic globalization has developed with anirresistible force.

After Sales Service

Our Service

1. Our Service:
(1) Select equipment model;
(2) Design and manufacture products according to clients’ special requirement;
(3) Train technical personnel for clients.

2. Serivces during the sale:
(1) Pre-check and accept products ahead of delivery;
(2) Help clients to draft solving plans;
(3) Xihu (West Lake) Dis. clients how to install equipment successfully without problem.

3. After-sale services:
(1) Assist clients to prepare for the first construction scheme;
(2) Install and debug the equipment;
(3) Train the first-line operators on site.



1.Q:What Information needed to get accurate quotation and proposal?
A:1). What type is the mining? Is it rock stone? or it is sand?
2). If rock stone, what is the general particle size(mm) of the raw ore?
3). What is the handling capacity (tons per hour) you need?
4) .What is the elements of the raw ore? How much percent % of each minerals?

2.Q:Can we send the mineral samples to you to run the ore-dressing experiment test?
A:?Yes, we can run the ore-dressing experiment for our customers. After the test, we will give you the reasonable flowchart, suitable solution and equipment selection. etc. based on the test results.

3.Q:What about warranty of the equipment? Any spare parts supplied?
A:The warranty period of?OASIS?equipment is 12 months. And of course we will supply the spare parts to you for life-long time at lowest cost.

4.Q: Why you choose me?
A:1). Professional manufacturer of supplying mining equipment, Ore beneficiation equipment and mining dryers.
2). Experienced and professional R&D team and manufacturing team.
3). Professional sales team consisted of dedicated, dynamic and innovative staff with international version.
4). Professional logistics service ensuring safety and timely delivery of products all over the world.

Axle Spindle Types and Installation

Are you looking for a new axle spindle for your vehicle? If so, you’ve come to the right place. Learn more about their types, functions, and installation. After reading this article, you’ll be well on your way to finding your new axle spindle. Axle spindles are essential to your vehicle. There are several types and each has unique characteristics. Here’s how to choose the best 1 for your car.


Axle spindle dimensions are crucial for safe wheel support. This component experiences significant stress and load during bearing mounting and must provide sufficient strength. The axle spindle can be hot-forged or shaped to include an integral shoulder. The shape of the bearing stop region must be abruptly transitioned from a straight to a curved configuration. Dimensions of axle spindle vary with different materials, manufacturing techniques, and applications.
The bearing surfaces of the axle spindle are 1.376 inches across, while the bearing spacer is 1.061 inch across. The axle spindle is 1.376 inches long and includes a cotter pin and nut. Typical axle spindle dimensions are listed below. Some axles may have additional components to reduce their weight, while others may not have any. The number of axles and bearings is also important to consider when determining the dimensions of the axle.
The outside shape of the axle spindle 40 is similar to that of the prior art spindle 10. The outer wheel bearing region 44 is cylindrical with a diameter D 1 and an inner wheel bearing region 46. An axially-separating transition region 48 separates the inner bearing region 46 from the outer wheel bearing region 44. It is important to note that the internal diameter is generally slightly larger than the outer wheel bearing region 46.
Axle spindles can be integrally formed or welded to the housing or central beam. They can also be designed differently depending on the intended function. For example, the trailer axle spindle may have a circular or rectangular cross section. Once again, axle spindles are important for safety and longevity, so it is important to know their dimensions. You can also check online for the dimensions of axle spindles.


Axle spindles are crucial components of a vehicle’s suspension system. They enable a vehicle to move forward, turn, brake, and accelerate. The axle also supports the wheel bearings. In addition to supporting the wheel hub, the axle spindle connects the arms of each wheel to the chassis. This piece is also known as a steering knuckle. The axle spindle’s job is to provide sufficient strength to support the axle.
The functional elements of an axle spindle are cylindrical and have a transition region and an outer surface with an irregular pattern. They have a first and a second diameter, and are shaped to form the spindle’s beam portion and spindle region. The transition region forms a pivotal connection between the axle and the suspension. It also provides the connection between the axle and the trailer. It allows a vehicle to rotate without causing excessive vibrations.
Axle spindles can be circular in structure and are similar to those of the prior art. They support wheel hub configurations. The first end of a spindle is threaded, while the second end is open. The outer wheel bearing region has an outer surface with a diameter D1, while the inner wheel bearing region 46 has a cylindrical outer surface with a diameter D2. The transition region separates the spindle from the rest of the axle.
The spindle nut retains the wheel hub on the spindle, whereas the spindle nut holds the hub assembly in place. A spindle nut retains the wheel on the spindle. A hub cap protects the locking nut assembly and lubrication area. A hub cap is also a common component of the axle. The hub cap also provides a protective shield for the spindle nut.
Steering axle spindles do not extend to the right of the oil seal. They extend from the steering kunckle, which is pivotally joined to the steering axle beam. Despite the differences in bearing seals, wheel hub mounting means, and brake assemblies, the basic spindle configuration is the same. A spindle consists of 2 axially separated bearing regions, 1 with a larger diameter than the other, with a bearing stop adjacent to the inner bearing region.


The axle is the basic unit of an automobile, and it includes several components. Among these are bearings, axle housings, and wheel hubs. Bearings and axle housings take on all of the radial loads placed on them during operation. As a result, they are necessary to ensure that a vehicle is able to function at its optimum level. But if you’re not sure what these components are, they can make all the difference in your ride.
Axle type depends on a number of factors, including the amount of force produced. In some cases, the vehicle already has pre-designed axles that come in standard formats, but in other cases, a customer can order a custom-made axle for the specific needs of his vehicle. Customized axles give the vehicle operator greater control over the speed and torque of the wheels. To choose the correct axle type for your vehicle, it’s helpful to know the measurements of the axle.
Axle gear sets and lubrication passages are also different. Reverse-cut gears can’t be used in place of standard cut gears, and vice-versa. The 2 types of axle are compatible, but the spline count of the differential case must match that of the axle. It’s important to remember that a different type of axle may work with a different type of machine tool.
Different axle spindle materials have their own advantages and disadvantages. Some are more durable than others, depending on their load capacity. Disc brake hubs and axle spindles are similar to the non-braking ones, but include a rotor and a caliper yoke. The yoke design on the rotor or caliper spindle is specific for each rotor.
Bearing-type axles are the most durable. They transfer the weight of the vehicle to the axle casing. The axle housing is retained by a flange bolted to the hub, and the axle bearings are secured on the spindle by a large nut. Alternatively, axles with bearings are supported solely on the axle spindle and don’t require a hub. Floating axles are typically better for long-term operation, but may be a limited choice for vehicles.


Axle spindle installation involves tightening the axle spindle nut to retain the spacer and bearing cones in position. When properly tightened, the axle spindle nut provides the clamp force required to compress the bearing spacer and bearing cone. Preloading is an important part of axle spindle installation because it optimizes bearing life by limiting the tolerance range of end play. Here are some tips on axle spindle installation.
To start the process, you should remove the axle spindle from the vehicle. If the old spindle is not a bolt-on type, a technician will need to cut the weld that holds the axle spindle in place. Then, he or she would need to thread the new spindle back into place. The axle tube must be threaded to accept the new spindle. Once the axle spindle is properly installed, the technician will need to tighten it to the specified torque.
Once the axle spindle is installed, the technician will continue tightening the nut assembly. To ensure a tight grip, the technician will rotate the outer washer while adjusting the torque level on the axle spindle nut. If the nut is not correctly torqued, it may loosen the axle spindle. In addition, improper torque can cause excessive inboard pressure on the outer nut, which can result in over or under-compression of the bearing cone.
The second axle spindle includes an inboard bearing 54 and an outboard bearing 56. The inboard bearing has an inboard surface that abuts the shoulder 26 of the axle spindle. The outboard bearing 57 is mounted on the axle spindle near its outboard end. A bearing spacer 58 is positioned between the inboard and outboard bearings. The spacer and bearing cone group comprises the bearing cones 54 and 56.
Proper alignment of the new spindle is essential for a secure fit. Taking your trailer to a licensed repair facility for a trailer spindle installation is a good idea, as a poorly installed axle can result in improper wheel tracking and premature tire wear. A licensed trailer repair facility can do this for you without much difficulty. This way, you won’t waste your time or frustration on a DIY trailer axle replacement.

China Custom Stepper Motor Drive Dosing Pump for Ceramic Vacuum Filter   wholesaler China Custom Stepper Motor Drive Dosing Pump for Ceramic Vacuum Filter   wholesaler