Product Description

OUTDOOR LED SCREENS
Superior quality LED displays by FWS Led
All Sizes and Resolutions Available
Weatherproof: Made to Withstand Rain, Snow, and Any Weather
Customizable: We Can Create Any Size and Configuration
LED Rental Cabinet
Picture for 500 x 500 and 500 x 1000 Cabinet

Memorize Parameters including Brightness, Chroma Fixation Figures, and Module Parameters when power is cut.

  
     LED DISPLAYS MANUFACTURING FWS Led designs customized LED advertising screens for each project and client, so they are customized screens.    
   

 

	Parameters	P2.976	P3.91	P4.81
Technical parameter
	Pixel Pitch	2.976mm	3.91mm	4.81mm
	Module Definition	84W x 84H	64W×64H = 4096	52W× 52H = 2074
	Cabinet Pixel Density	112896 Pixel/m^2	65536 Pixel/m2	43264 Pixel/m2
	Driver Type	1/ 21 Scans	1/ 32 Scans	1/ 32 Scans
	Pixel Structrue	SMD1921 3 in 1 LED
	Module Size	250mm × 250mm
	Module Weight	0.65KG
	Module Maximun Power Dissipation	≤42W
	Average Power Dissipation	450 W/sqm
	Refresh Rate	>1920HZ
	Waterproof Rating	IP 65
	Brightness	≥3500-4500

 
Pre-Sales Service
1) Your inquiry related to our products or price will be replied to in 24 hours.
2) Well-trained and experienced staff to answer all your inquiries in fluent English.
3) OEM&ODM, any your customized screen we can help you to design and put into product.
4) Distributorships are offered for your unique design and some of our current models.
5) Protection of your sales area, ideas of design, and all your private information.

After-Sales Service
1. Free training: 
You can send your engineers who know electronics and information to our factory and we provide free technical training, which contains training operation and maintenance of the LED display at our factory. We also offer the instruction manual, software, test report, drawing steel structure, and so on. 
2. Installation: 
We can offer you an engineer to install the LED display, but you have to offer him two-way air tickets and accommodation, and a visa. The engineer’s salary is $80/day, or we can CZPT you to install the screen by team-viewer remote control. 
3. After-Sales Service;
If you have any questions about our product, you can inform us by mail or call, and we will reply to you in 24 hours, and offer you a good solution for your problem.

Packaging

Trade Terms
1)  Payment: T/T, usually 50% prepayment before production,
     50% balance to be paid before delivery, it also changes according to the total  quantity
2)  50% of the total price must be paid before production as a down payment. (T/T)
     The other 50% must reach the seller’s accounts on the delivery date, or the seller will hold the products. (T/T)
3)  Sample can be delivered in 10 days
4)  Shipping port: HangZhou, Mainland China
5)  Discounts are offered based on order quantities.

About Us

  Our company is named HangZhou FWS Technology Co., Ltd. was established in May 2008. It’s a high-tech enterprise which is specialized in researching, designing, manufacturing, and exporting all kinds of led displays. With qualified talents, high technology, and abundant funds, we have many offices and branches in most cities of China, so we can offer fast and perfect service to our clients.

              Our Company has a high-quality
experienced technicians and advanced modern production equipment; CZPT machine, injection molding machine, COB machine, high-temperature aging furnace, TABLE machine (point-by-point brightness debug) reflow soldering machine and several wave soldering machines, PCBA lines, automatic packaging production lines and 3,000sqm aging vertical testing stand. Fully implement strict ISO9001-2000 quality management, and strive to make every piece of LED displays, LED unit boards, modules, lighting to be the best, our products have passed the European CE, American UL certification and other related certifications.
 

Certificates

Our Clients

 

FAQ;
_____________________________________________________________________________________________

Q1; How do you ship the goods and how long does it take to arrive?
A: We mostly accept FOB train terms, but we can help you order and arrange a shipping agent.
It usually takes 20-30 days on the sea. a few days for customs clearance.

Q2; Is it OK to print my logo on the products?
A: Yes. Please inform us formally before our production and confirm the design firstly based on our sample.

Q3; Are you a manufacturer or trading company?
A: We are a professional OEM/ODM manufacturer specializing in the LED Display industry for more than 11 years.

Q4; How does your factory do regarding quality control?
A; Quality is a priority. Brighter people always attach great importance to quality control from the very beginning to the very end.
    We focus on every detail, Our factory has gained ISO9001, ISO14001, CE, RoHS, and FCC authentication.

Q5; Do you provide any free spare parts in each order?
A; Yes, a certain amount of spare parts will be provided for free, spare parts including modules,
    power cable, signal cable, LED lamp, IC, mask, power supply, receiving card, etc.

Q6; How about your Warranty Term?
A: 3-year warranty. Structure design, installation problem, program the screen, how to use the screen…don’t worry, we have a professional after-sale team to solve any questions after you placed an order. And your exclusive sales engineer will also help you get over any problems.

Q7; What is your best service?
A: One to 1 sales engineer to customer responsibility system. We will do:
1. Know your project and provide the best solution for it;
2. Track your order and let you know each step and detail of it;
3. Teach you how to install and use the screen;
4. Care about the subsequent use of your screen and ensure your after-sales service is well.

 

How to Choose the Right Worm Shaft

You might be curious to know how to choose the right Worm Shaft. In this article, you will learn about worm modules with the same pitch diameter, Double-thread worm gears, and Self-locking worm drive. Once you have chosen the proper Worm Shaft, you will find it easier to use the equipment in your home. There are many advantages to selecting the right Worm Shaft. Read on to learn more.

Concave shape

The concave shape of a worm’s shaft is an important characteristic for the design of a worm gearing. Worm gearings can be found in a wide range of shapes, and the basic profile parameters are available in professional and firm literature. These parameters are used in geometry calculations, and a selection of the right worm gearing for a particular application can be based on these requirements.
The thread profile of a worm is defined by the tangent to the axis of its main cylinder. The teeth are shaped in a straight line with a slightly concave shape along the sides. It resembles a helical gear, and the profile of the worm itself is straight. This type of gearing is often used when the number of teeth is greater than a certain limit.
The geometry of a worm gear depends on the type and manufacturer. In the earliest days, worms were made similar to simple screw threads, and could be chased on a lathe. During this time, the worm was often made with straight-sided tools to produce threads in the acme plane. Later, grinding techniques improved the thread finish and reduced distortions resulting from hardening.
When a worm gearing has multiple teeth, the pitch angle is a key parameter. A greater pitch angle increases efficiency. If you want to increase the pitch angle without increasing the number of teeth, you can replace a worm pair with a different number of thread starts. The helix angle must increase while the center distance remains constant. A higher pitch angle, however, is almost never used for power transmissions.
The minimum number of gear teeth depends on the angle of pressure at zero gearing correction. The diameter of the worm is d1, and is based on a known module value, mx or mn. Generally, larger values of m are assigned to larger modules. And a smaller number of teeth is called a low pitch angle. In case of a low pitch angle, spiral gearing is used. The pitch angle of the worm gear is smaller than 10 degrees.

Multiple-thread worms

Multi-thread worms can be divided into sets of one, two, or 4 threads. The ratio is determined by the number of threads on each set and the number of teeth on the apparatus. The most common worm thread counts are 1,2,4, and 6. To find out how many threads you have, count the start and end of each thread and divide by two. Using this method, you will get the correct thread count every time.
The tangent plane of a worm’s pitch profile changes as the worm moves lengthwise along the thread. The lead angle is greatest at the throat, and decreases on both sides. The curvature radius r” varies proportionally with the worm’s radius, or pitch angle at the considered point. Hence, the worm leads angle, r, is increased with decreased inclination and decreases with increasing inclination.
Multi-thread worms are characterized by a constant leverage between the gear surface and the worm threads. The ratio of worm-tooth surfaces to the worm’s length varies, which enables the wormgear to be adjusted in the same direction. To optimize the gear contact between the worm and gear, the tangent relationship between the 2 surfaces is optimal.
The efficiency of worm gear drives is largely dependent on the helix angle of the worm. Multiple thread worms can improve the efficiency of the worm gear drive by as much as 25 to 50% compared to single-thread worms. Worm gears are made of bronze, which reduces friction and heat on the worm’s teeth. A specialized machine can cut the worm gears for maximum efficiency.

Double-thread worm gears

In many different applications, worm gears are used to drive a worm wheel. These gears are unique in that the worm cannot be reversed by the power applied to the worm wheel. Because of their self-locking properties, they can be used to prevent reversing motion, although this is not a dependable function. Applications for worm gears include hoisting equipment, elevators, chain blocks, fishing reels, and automotive power steering. Because of their compact size, these gears are often used in applications with limited space.
Worm sets typically exhibit more wear than other types of gears, and this means that they require more limited contact patterns in new parts. Worm wheel teeth are concave, making it difficult to measure tooth thickness with pins, balls, and gear tooth calipers. To measure tooth thickness, however, you can measure backlash, a measurement of the spacing between teeth in a gear. Backlash can vary from 1 worm gear to another, so it is important to check the backlash at several points. If the backlash is different in 2 places, this indicates that the teeth may have different spacing.
Single-thread worm gears provide high speed reduction but lower efficiency. A multi-thread worm gear can provide high efficiency and high speed, but this comes with a trade-off in terms of horsepower. However, there are many other applications for worm gears. In addition to heavy-duty applications, they are often used in light-duty gearboxes for a variety of functions. When used in conjunction with double-thread worms, they allow for a substantial speed reduction in 1 step.
Stainless-steel worm gears can be used in damp environments. The worm gear is not susceptible to rust and is ideal for wet and damp environments. The worm wheel’s smooth surfaces make cleaning them easy. However, they do require lubricants. The most common lubricant for worm gears is mineral oil. This lubricant is designed to protect the worm drive.

Self-locking worm drive

A self-locking worm drive prevents the platform from moving backward when the motor stops. A dynamic self-locking worm drive is also possible but does not include a holding brake. This type of self-locking worm drive is not susceptible to vibrations, but may rattle if released. In addition, it may require an additional brake to keep the platform from moving. A positive brake may be necessary for safety.
A self-locking worm drive does not allow for the interchangeability of the driven and driving gears. This is unlike spur gear trains that allow both to interchange positions. In a self-locking worm drive, the driving gear is always engaged and the driven gear remains stationary. The drive mechanism locks automatically when the worm is operated in the wrong manner. Several sources of information on self-locking worm gears include the Machinery’s Handbook.
A self-locking worm drive is not difficult to build and has a great mechanical advantage. In fact, the output of a self-locking worm drive cannot be backdriven by the input shaft. DIYers can build a self-locking worm drive by modifying threaded rods and off-the-shelf gears. However, it is easier to make a ratchet and pawl mechanism, and is significantly less expensive. However, it is important to understand that you can only drive 1 worm at a time.
Another advantage of a self-locking worm drive is the fact that it is not possible to interchange the input and output shafts. This is a major benefit of using such a mechanism, as you can achieve high gear reduction without increasing the size of the gear box. If you’re thinking about buying a self-locking worm gear for a specific application, consider the following tips to make the right choice.
An enveloping worm gear set is best for applications requiring high accuracy and efficiency, and minimum backlash. Its teeth are shaped differently, and the worm’s threads are modified to increase surface contact. They are more expensive to manufacture than their single-start counterparts, but this type is best for applications where accuracy is crucial. The worm drive is also a great option for heavy trucks because of their large size and high-torque capacity.