China wholesaler Pulley for Aluminum Roller Shutter Door/Shutter Hardware double pulley

Product Description

Strap Pulley / Tape coiler pulley

Item: MAR. 571A
Used for roller shutter, manual operation with tape coiler

Quick Detail:

1. Strap pulley for roller shutter
2. Model Item: MAR. 571A
3. Used for roller shutter, manual operation with tape coiler
4. Place of Origin: ZheJiang , China
5. Brand: MASTER


1…For Roller Doors (Rolling Doors) Use
2…Material: Plastic
3. Size: W138*H152mm
4. Key words: Pulley / Tape coiler/Strap coiler
5. Fittings: Internal tape entry guide and exterior tape entry guide
6. Function: To open & close roller shutter window with manual operation by tape
7. Features: Convenient especially when power off
8. Color: White color
9. Standard equipment: 5m tape’


For roller shutter window or door decorating
For manual operation roller shutter window with strength below 20KG
Other control way electric, crank operation we can also provide for you, such connected belt, entry belt, idler, stopper, extended roller, pulley, tape coiler, crank and so on.
Except the roller shutter window, we are also specialized in roller door, including the slats and accessories.

Insulation Slats Weight
Max available width
Max available height
Max available area
55mm 3.8 3500 3500 10.5 18.2
77mm 0.46 5000 4000 19.0 13
95mm 0.45 8500 6500 50 10.5

Packing & Delivery

Our Service

Why choose MASTER ?

1. Low MOQ with reasonable price: One set is available for checking our quality first conveniently.
2. Good Quality: Your client satisfied on our quality. You can get good reputation from your market and obtain more orders.
3. Good Service: Our professional service before and after sale.
4. Fast & Cheap Delivery: We have big discount from forwarder (Long Contract).
5. Rot-proof rubber seal for maximum light and air sealing between the sections.
6. Energy saving heat insulation due to high-strength PU rigid foam. The special foam meets the high quality requirements of industrial doors.
7. High-level resistance to bending and twisting. Secures garages against burglars and makes your door wind and weather proof.
8. Robust surface, easy to clean, the finished surface is extremely robust and easy to maintain.
9. OEM is welcome.




Q1: What is your MOQ?
A:No min order for garage door. We also suggest wooden cases package for protection during shipment.
Q2: What is the Max available size of the panels?
A: The max length of panels can be 2400mm . The max height of panels is 3000mm, adjustable.
Q3: Can you do the full set products according to my project drawing?
A: Yes, our engineers will check your engineering drawings to ensure the accuracy of each different accessory and quantity.
Q4: Can I get a sample of panel for quality check?
A: Sample is available. 
Q5: How can I get a price of needed shutter windows ?
A: Please give the exactly size and quantity of your required window. We can give you a detail quotation based on your requirements.
Q6: What kind of payment terms would you accept?
A: We usually accept T/T, L/C, Western Union, etc. If you prefer other payments terms, please feel free to discuss with us.
Q7: We want to be your agent of our area. How to apply for this?
A: Please send your idea and your profile to any e-mails of us. Let’s cooperate.
Q8: How to install your product, is it difficult?
A: Easy to install, just screw, no welding.If you need, installation video can be supplied. And you can contact our salesman if you have any question. Of course we can offer on-site installation guide services if you need.
Q9: Do you produce other products? Do you also produce accessories?
A: Yes, we also produce Sectional garage door, Glass aluminum sectional Door, Industrial door, High speed door, Rolling shutter door, Dock leveller, Dock seal, Motor&Gate openers; We produce parts by ourselves in order to control quality and cost.
Q10: Could you send me the price list?
A: Yes, the product is not standard, the size is customized according to your requirements, I can provide a regular size quotation.

Type: Roller
Material: Metal
Control: Crank
Open Style: Vertical
Slats: 45,55,77,95
Dimension: Customised


Customized Request

garge door pulley

How does the design and construction of garage door pulleys impact their durability?

The design and construction of garage door pulleys have a significant impact on their durability. Here’s how these factors influence the durability of pulleys:

1. Material Selection:

The choice of materials for pulley construction plays a vital role in determining their durability. High-quality materials such as steel, nylon, Delrin (acetal resin), and glass-filled nylon are commonly used for their strength, resistance to wear, and ability to withstand heavy loads. The selection of durable materials ensures that the pulleys can endure the stress and strain of regular garage door operation without premature failure.

2. Bearing Mechanism:

The bearing mechanism used in the pulley design greatly impacts its durability. High-quality bearings, such as sealed ball bearings or precision roller bearings, are often employed to reduce friction and wear. These bearings provide smooth rotation and minimize the risk of premature failure due to excessive friction or lack of lubrication.

3. Reinforcement and Reinforcement:

Pulleys with reinforced construction are more durable compared to those with weaker or less robust designs. Reinforcing elements, such as metal inserts or additional reinforcements at high-stress points, can enhance the strength and resistance to deformation. Well-designed pulleys also feature appropriate reinforcement in the axle or hub area to prevent bending or breaking under load.

4. Load Capacity:

The design and construction of pulleys should consider the anticipated load capacity. Pulleys that are specifically designed and engineered to handle the weight and force of the garage door are more likely to be durable. Proper load distribution, reinforced components, and the use of high-strength materials ensure that the pulleys can withstand the load without excessive wear or deformation.

5. Surface Coating and Finishing:

Applying protective coatings or finishes to the pulley surface can enhance durability. These coatings, such as corrosion-resistant treatments or powder coatings, provide an added layer of protection against moisture, rust, and other environmental factors that can degrade the pulley over time. Additionally, a smooth and well-finished surface reduces friction and wear.

6. Quality Control and Manufacturing Standards:

The adherence to high-quality manufacturing standards and rigorous quality control processes significantly impacts pulley durability. Manufacturers that follow industry standards and conduct proper testing ensure that the pulleys meet the required specifications and are built to withstand the demands of garage door operation.

By considering these design and construction factors, garage door pulleys can be engineered for greater durability, reducing the likelihood of premature failure and minimizing the need for frequent replacements.

In summary, the design and construction of garage door pulleys impact their durability through material selection, bearing mechanism, reinforcement, load capacity considerations, surface coating and finishing, as well as adherence to quality control and manufacturing standards.

China wholesaler Pulley for Aluminum Roller Shutter Door/Shutter Hardware   double pulley	China wholesaler Pulley for Aluminum Roller Shutter Door/Shutter Hardware   double pulley
editor by CX