China factory Timing Pulley Aluminum, Alloy, 45# Steel Nylon pulley and belt

Product Description

Company Introduction
Founded in 1984, CHINAMFG covers 45,000 square CHINAMFG with over 350 staff. As a national high-tech enterprise now, we passed ISO9001, TS16949. With national lab and municipal innovation center, we set over 10 national and trading standards. What’s more, annual output is more than 10 million pieces of belts and 600 thousand pieces of pulleys. Matched belts and pulleys make sure the life-span of products longer.

Product Description

  (MXL XL L H XH XXH T2.5 T5 T10 T20 3M 5M 8M 14M)
. Metric T-Series Timing Pulleys: T2.5, T5, T10, T20, AT5, AT10, AT20
. HTD Pulleys, Taper Bushed, QD optional: HTD-2M, 3M, 5M, 8M, 14M, 20M, S2M, S3M, S4.5M, S5M,
  S8M, S14M, RPP2M, RPP3M, RPP5M, RPP8M, RPP14M,
. Taper Bushed SynchronousMXL, XL, L, H, XH, XXH Pulleys
. Metric and Inch Bore Taper Bushings for Sprockets,
  Sheaves and Timing Pulleys
. Super-Torque Timing Pulleys


Type pb hg R r1 s Angle
3M 3 1.28 0.91 0.26~0.35 1.90 0.762 ≈14°
5M 5 2.16 1.56 0.48~0.52 3.25 1.144 ≈14°
8M 8 3.54 2.57 0.78~0.84 5.35 1.372 ≈14°
14M 14 6.20 4.65 1.36~1.50 9.80 2.794 ≈14°
20M 20 8.60 6.84 1.95~2.25 14.80 4.320 ≈14°

Dimension Of Linear Type Pulley

bw 0.84±0.05 1.14±0.05 1.32±0.05 3.05±0.10 4.19±0.13 7.90±0.15 12.17±0.18
hg 0.69 0 0.84 0 1.65 0 2.67 0 3.05 0 7.14 0 10.31 0
-0.05 -0.05 -0.08 -0.10 -0.13 -0.13 -0.13
Φ+1.5° 20 25 25 20 20 20 20
rb 0.35 0.35 0.41 1.19 1.60 1.98 3.96
rt 0.13 +0.05 0.30 +0.05 0.64 +0.05 1.17 +0.13 1.60 +0.13 2.39 +0.13 3.18 +0.13
0 0 0 0 0 0 0
0.508 0.508 0.508 0.762 1.372 2.794 3.048

Dimension Of Linear Type Pulley Dimension & Tolerance Of Linear Type(mm)

Type bw hg


rb rt Details
MXL 0.84±0.05 0.69 20 0.35 0.13 0.508 Details
XXL 1.14±0.05 0.84 25 0.35 0.30 0.508 Details
XL 1.32±0.05 1.65 25 0.41 0.64 0.508 Details
L 3.05±0.10 2.67 20 1.19 1.17 0.762 Details
H 4.19±0.13 3.05 20 1.60 1.6 1.372 Details
XH 7.90±0.15 7.14 20 1.98 2.39 2.794 Details
XXH 12.17±0.18 10.31 20 3.96 3.18 3.048 Details

Dimension of Trapezoidal Tooth (mm)



Type Type y
rb rt 2a Details

Devia -tion

  Devia -tion   Devia -tion mix ±.15° max   Devia -tion  
T2.5 1.75 +0.050 1.83 +0.050 0.75 +0.050 1 25 0.2 0.3 +0.050 0.6 Details
T5 2.96 +0.050 3.32 +0.050 1.25 +0.050 1.95 25 0.4 0.6 +0.050 1 Details
T10 6.02 +0.10 6.57 +0.10 2.6 +0.10 3.4 25 0.6 0.8 +0.10 2 Details
T20 11.65 +0.150 12.6 +0.150 5.2 +0.130 6 25 0.8 1.2 +0.10 3 Details

Dimension of Curvilinear Tooth(mm)

Tyep PB HT R S R Angle Details
3M 3 1.28 0.91 1.90 0.3 ≈14° Details
5M 5 2.16 1.56 3.25 0.48 ≈14° Details
8M 8 3.54 2.57 5.35 0.8 ≈14° Details
14M 14 6.20 4.65 9.80 1.4 ≈14° Details


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Contact information

Acle Luo

Company Name: HangZhou CHINAMFG synchronous belt Co., Ltd

Add: Xihu (West Lake) Dis.n Town HangZhou City HangZhou ZHangZhoug China(Mainland)

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Certification: ISO
Pulley Sizes: Type A
Manufacturing Process: Casting
US$ 1.32/Piece
1 Piece(Min.Order)


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aluminum pulley

How do aluminum pulleys contribute to the efficiency of garage doors and gates?

Aluminum pulleys play a significant role in enhancing the efficiency of garage doors and gates. They contribute to the smooth operation, reliable performance, and overall functionality of these systems. Here is a detailed explanation of how aluminum pulleys contribute to the efficiency of garage doors and gates:

  • Smooth Movement: Aluminum pulleys enable smooth movement of the garage doors and gates. They are responsible for transferring the rotational motion from the opener or motor to the cables or belts that lift and lower the doors or gates. The low friction and lightweight nature of aluminum pulleys reduce resistance and enhance the smoothness of the movement, ensuring that the doors or gates open and close effortlessly, with minimal noise and vibration.
  • Reduced Wear and Tear: Aluminum pulleys help minimize wear and tear on the garage door or gate components. By providing a point of contact for the cables or belts, they distribute the load evenly, preventing localized stress or strain. The smooth rotation of aluminum pulleys reduces friction and minimizes the wear on the cables, belts, and other moving parts. This extends the lifespan of the components and reduces the frequency of maintenance or replacement, contributing to the overall efficiency of the garage doors and gates.
  • Noise Reduction: Aluminum pulleys contribute to noise reduction in garage doors and gates. The lightweight construction of aluminum pulleys, combined with their smooth operation, helps minimize vibrations and noise during the opening and closing process. This is particularly beneficial in residential areas where noise control is important, allowing for quieter operation and enhanced user experience.
  • Corrosion Resistance: Aluminum pulleys offer corrosion resistance, which is advantageous for garage doors and gates installed in outdoor or high-humidity environments. The resistance to corrosion ensures that the pulleys can withstand exposure to moisture, rain, and other environmental factors without deteriorating or affecting their performance. This contributes to the long-term efficiency and durability of the garage doors and gates, reducing the need for frequent maintenance or replacement.
  • Lightweight and Easy Installation: The lightweight nature of aluminum pulleys simplifies the installation process of garage doors and gates. It makes handling and maneuvering the pulleys easier, reducing the time and effort required for installation. The ease of installation not only enhances the efficiency of the initial setup but also facilitates any future adjustments or repairs that may be necessary.
  • Compatibility with Various Door and Gate Systems: Aluminum pulleys are compatible with various garage door and gate systems, including those that utilize cables, belts, or chains for operation. Their design allows for easy integration into different configurations and mechanisms, providing flexibility and compatibility with a wide range of garage door and gate systems. This ensures that aluminum pulleys can contribute to the efficiency of different types of doors and gates, regardless of their specific design or operation.

In conclusion, aluminum pulleys significantly contribute to the efficiency of garage doors and gates by enabling smooth movement, reducing wear and tear, minimizing noise, offering corrosion resistance, facilitating easy installation, and providing compatibility with various door and gate systems. The lightweight and durable nature of aluminum pulleys ensures reliable performance and long-term efficiency, enhancing the overall functionality and user experience of garage doors and gates.

aluminum pulley

What safety considerations should be kept in mind when using aluminum pulleys?

When using aluminum pulleys, it is important to keep several safety considerations in mind to ensure the safe operation of the system. Here is a detailed explanation of the safety considerations that should be kept in mind when using aluminum pulleys:

  • Proper Installation: Ensure that the aluminum pulleys are installed correctly according to the manufacturer’s instructions. Improper installation can lead to misalignment, belt slippage, or other issues that can compromise safety. Follow the recommended torque specifications and use appropriate fasteners to secure the pulleys in place.
  • Weight Capacity: Consider the weight capacity or load-bearing limits of the aluminum pulleys. Ensure that the pulleys are suitable for the intended application and can handle the expected loads. Exceeding the weight capacity of the pulleys can lead to structural failure, posing a safety risk.
  • Maintenance and Inspection: Regularly inspect the aluminum pulleys for signs of wear, damage, or deterioration. Implement a maintenance schedule that includes cleaning, lubrication, and inspection to ensure that the pulleys are in good condition. Address any issues promptly to prevent potential safety hazards.
  • Guarding: In certain applications, it may be necessary to install appropriate guards or protective barriers around the aluminum pulleys. Guards help prevent accidental contact with moving parts, reducing the risk of injuries. Assess the specific requirements of the system and implement suitable guarding measures as needed.
  • Safe Access and Lockout/Tagout: When performing maintenance or repair tasks involving the aluminum pulleys, follow proper lockout/tagout procedures to ensure the system is safely shut down and de-energized. Use appropriate personal protective equipment (PPE) and provide safe access to the pulleys, considering factors such as height, reach, and stability.
  • Training and Operator Awareness: Provide proper training to operators and maintenance personnel regarding the safe use and handling of aluminum pulleys. Ensure that they are aware of potential hazards, proper operating procedures, and emergency protocols. Promote a safety-conscious culture and encourage reporting of any safety concerns or incidents.

By keeping these safety considerations in mind, the risks associated with using aluminum pulleys can be minimized, and the overall safety of the system can be enhanced. Proper installation, adherence to weight capacity limits, regular maintenance and inspection, guarding when necessary, following lockout/tagout procedures, and providing adequate training and awareness contribute to a safe working environment when using aluminum pulleys.

aluminum pulley

How is aluminum used in the construction of pulleys?

In the construction of pulleys, aluminum is utilized in various ways to take advantage of its unique properties. Aluminum is a lightweight and versatile material that offers several benefits when used in pulley construction. Here is a detailed explanation of how aluminum is used in the construction of pulleys:

  • Pulley Body: The main body or frame of the pulley can be constructed entirely from aluminum. Aluminum provides a lightweight yet strong structure that can effectively support the load and handle the forces involved in pulley operations. The aluminum pulley body is typically precision-machined or cast to achieve the desired shape, dimensions, and grooves for the cable or rope.
  • Grooves and Sheaves: Aluminum is well-suited for forming grooves or sheaves in pulleys. These grooves provide a channel for the cable or rope to sit in, ensuring proper alignment and preventing slippage. Aluminum sheaves can be machined or cast with precision to create smooth and precise grooves that optimize the performance of the pulley. The lightweight nature of aluminum sheaves also reduces the rotational inertia, allowing for more efficient operation.
  • Bearings and Bushings: Aluminum is often used for the housing or components of bearings and bushings within the pulley assembly. These bearings and bushings provide smooth rotation and reduce friction between the pulley body and the axle or shaft. The aluminum housing offers durability, corrosion resistance, and compatibility with lubricants, ensuring reliable and low-friction operation of the pulley.
  • Fasteners and Hardware: Aluminum fasteners, such as screws or bolts, can be used to secure various components of the pulley assembly. Aluminum hardware provides lightweight and corrosion-resistant connections, ensuring the integrity of the pulley structure. The use of aluminum fasteners also helps to prevent galvanic corrosion when combined with other aluminum components.
  • Surface Treatments: Aluminum pulleys may undergo surface treatments to enhance their performance and durability. For example, anodizing is a common surface treatment for aluminum pulleys. It involves creating a protective oxide layer on the surface of the aluminum by electrochemical means. Anodization improves the corrosion resistance, hardness, and wear resistance of the pulley, extending its lifespan and maintaining its appearance.
  • Integration and Assembly: Aluminum pulleys can be seamlessly integrated with other components or systems in construction and machinery. Aluminum’s compatibility with different materials, such as steel, allows for easy assembly and integration into larger systems. The lightweight nature of aluminum pulleys simplifies installation and reduces the overall weight of the system, contributing to energy efficiency and ease of handling.

In summary, aluminum is used in the construction of pulleys for various purposes, including the main body or frame, grooves and sheaves, bearings and bushings, fasteners and hardware, surface treatments, and integration with other components. By leveraging the lightweight and versatile properties of aluminum, pulleys can be designed to be durable, corrosion-resistant, and efficient in their operation.

China factory Timing Pulley Aluminum, Alloy, 45# Steel Nylon   pulley and belt	China factory Timing Pulley Aluminum, Alloy, 45# Steel Nylon   pulley and belt
editor by CX