China high quality Mxl XL L Htd 3m 5m 8m Aluminum Alloy Timing Synchronous Automotive Rubber Poly V Transmission Belt Pulley pulley system

Product Description


. Feature

Our Timing Belt uses Japan-imported high quality synthetic neoprene, high quality glass fiber cord and tooth surface with nylon 66 high stretch do the protection. The timing belt adapts teeth or teeth mesh to transfer power. It needs no lubrication, no slip, no pollution, less noise. The transmission efficiency is over 98%, and the speed ratio can reach 1:10. Linear velocity can be up to 50m/s. Its dynamic bending wind gives a good fatigue performance, and good aging heat-resistance abrasion performance.

. Parameters

Figure 1. Physicomechanical Property

Item  Trapezoid Teeth Arc Teeth
XL L H XH XXH 3M 5M 8M 14M 20M
Tensile Strength N/mm 80 120 270 380 450 90 160 300 400 520
Elongation Reference at Loading   N 60 90 220 300 360 70 130 240 320 410
Adhesion strength of cloth N/mm 5 6.5 8 10 12 6 10 12 15
Adhesion strength of core N/mm 200 300 600 800 1500 400 700 1200 1600
Gear shearing intensity N/mm 50 60 70 75 90 50 60 80 100
Elongation ≤ % 4%
Hardness Shore A 75 ± 5

Figure 2: Belt Teeth Size

Type Pitch (pb) mm Tooth height (ht) mm Belt thick (hs) mm Angle
MXL 2.032 0.51 1.14 40º
XXL 3.175 0.76 1.52 40º
XL 5.080 1.27 2.3 40º
L 9.525 1.91 3.6 40º
H 12.7 2.29 4.3 40º
XH 22.225 6.35 11.2 40º
XXH 31.7 9.53 15.7 40º
T2.5 2.5 0.7 1.3 40º
T5 5.0 1.2 2.2 40º
T10 10 2.5 4.5 40º
T20 20 5.0 8.0 40º
AT5 5.0 1.2 2.7 40º
AT10 10 2.5 5.0 40º
AT20 20 5.0 8.0 40º

. Production Equipment
01, pulley CNC processing zone                            02, synchronous belt making machine                  03, synchronous round roll teeth processing zone
04, synchornous belt curing processing zone        05, 3 roll calender                                            06, direct drive belt forming machine
07, pulley workshop timing mould

. Quality Testing


Q1.  Can I have a sample order?
        Yes, any sample order is welcome to know the quality of our products.

Q2.  What about the lead time of the sample or the final order?
        2-5 days for normal sample.
        20-30 days for a formal order.

Q3. How much is the minimum quantity for each item in 1 order?
       One mould quantity is ok. Usually around 100pcs for small item, several dozens for big item. 

Q4. Is it possible to print our logo or brand on the belt?
       Yes, we can print your logo or design on the belt after receipt of your formal authorization        letter of the logo or your brand.

Q5. Do you offer the guarantee for your product?
       Yes, usually we offer 1 year warranty for all of our products.


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Standard or Nonstandard: Standard
Application: Electric Cars, Motorcycle, Car
Feature: Wear-Resistant, High Temperature-Resistance
Tensile Strength: Strong
Material: Rubber
Type: Toothed Belt
US$ 0.1/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

htd pulley

What is the significance of proper alignment and tensioning in HTD pulley systems?

Proper alignment and tensioning play a critical role in the performance, efficiency, and longevity of HTD pulley systems. The alignment refers to the precise positioning of the pulleys and belts, while tensioning refers to the adjustment of belt tension within the system. Here’s a detailed explanation of the significance of proper alignment and tensioning in HTD pulley systems:

1. Efficient Power Transmission:

Proper alignment ensures that the pulleys are positioned accurately with respect to each other and the belts are properly seated on the pulley grooves. This alignment is essential for efficient power transmission within the system. Misalignment can result in slippage, increased friction, and loss of power, leading to reduced performance and energy wastage. By ensuring proper alignment, optimal power transfer is achieved, enhancing the overall efficiency of the HTD pulley system.

2. Reduced Wear and Extended Lifespan:

Improper alignment or tensioning can cause excessive wear on the pulleys, belts, and other system components. Misalignment can lead to uneven belt loading, increased stress concentration, and accelerated wear on the belt teeth and pulley grooves. Insufficient or excessive belt tension can cause premature wear, belt fatigue, or belt stretching. By maintaining proper alignment and tensioning, the wear and stress on the system components are minimized, resulting in extended lifespan and reduced maintenance costs.

3. Enhanced Belt Performance:

HTD pulleys rely on positive engagement with the belts to transmit power effectively. Proper alignment and tensioning ensure that the belts are properly seated and engaged with the pulleys’ tooth profile. This allows for optimal grip and power transfer, minimizing belt slip and maximizing the belt’s performance capabilities. Correct tensioning also helps to maintain the desired belt tension throughout the system, ensuring reliable power transmission and preventing issues such as belt ratcheting or jumping teeth.

4. Improved System Accuracy:

In applications that require precise positioning or timing, such as in robotics or automated machinery, proper alignment and tensioning are crucial. Accurate alignment ensures that the motion control components, such as pulleys and belts, operate in synchronization, resulting in precise and repeatable movement. Proper tensioning ensures that the belts maintain the desired tension, preventing belt elongation or slack that could lead to positional inaccuracies or timing errors. The combination of proper alignment and tensioning enhances the overall accuracy and reliability of the HTD pulley system.

5. Noise and Vibration Reduction:

Improper alignment and tensioning can contribute to increased noise and vibration levels within the HTD pulley system. Misalignment can cause belt oscillation, noise, and vibration due to uneven loading or rubbing against system components. Insufficient tensioning can result in belt flutter, resonance, or vibration. Proper alignment and tensioning help to minimize these undesirable effects, reducing noise levels and ensuring smoother and quieter operation of the system.

6. Safety Considerations:

Proper alignment and tensioning are essential from a safety perspective. Misalignment can lead to sudden belt disengagement or belt derailment, posing safety hazards to operators or nearby personnel. Insufficient tensioning can cause belt slippage or unexpected belt failure, potentially resulting in accidents or damage to the machinery. By maintaining proper alignment and tensioning, the risk of these safety issues is minimized, creating a safer working environment.

In summary, proper alignment and tensioning in HTD pulley systems are of significant importance. They ensure efficient power transmission, reduce wear on system components, enhance belt performance, improve system accuracy, reduce noise and vibration, and contribute to overall safety. By paying attention to alignment and tensioning, the performance, reliability, and lifespan of HTD pulley systems can be optimized, leading to improved productivity and reduced maintenance requirements.

htd pulley

Can HTD pulleys be customized for specific machinery and equipment?

Yes, HTD pulleys can be customized to meet the specific requirements of machinery and equipment. Here’s a detailed explanation of the customization options available for HTD pulleys:

1. Size and Dimensions:

HTD pulleys can be customized in terms of their size and dimensions to match the specific requirements of machinery and equipment. The outer diameter, bore diameter, hub length, and overall dimensions of the pulleys can be modified to fit the available space and align with the shaft size and mounting arrangement of the machinery. Customizing the size ensures proper fitment and optimal performance in the particular application.

2. Tooth Profile and Pitch:

The tooth profile and pitch of HTD pulleys can be customized to suit the corresponding HTD belts used in the machinery or equipment. The tooth profile can be modified to match the specific belt tooth shape, ensuring precise engagement and synchronization. Additionally, the pitch, which refers to the distance between the teeth, can be adjusted to accommodate the desired speed ratio or torque requirements of the system. Customizing the tooth profile and pitch ensures proper belt-pulley interaction and optimal power transmission.

3. Material Selection:

HTD pulleys can be customized in terms of material selection to meet the operational demands of the machinery or equipment. The choice of material depends on factors such as load capacity, environmental conditions, and corrosion resistance requirements. Common materials used for HTD pulleys include aluminum, steel, and cast iron. By selecting the appropriate material, the pulleys can be customized to withstand the specific forces and conditions within the machinery, ensuring durability and reliable performance.

4. Keyway and Mounting Options:

Customization of HTD pulleys also includes keyway and mounting options. Keyways are slots or grooves on the pulley’s bore that allow for secure shaft attachment and prevent slippage. The size and configuration of the keyway can be customized to match the machinery’s shaft and key dimensions. Additionally, mounting options can be customized to suit the specific mounting arrangement of the equipment, ensuring proper alignment and ease of installation.

5. Surface Treatment and Coatings:

HTD pulleys can undergo surface treatments and coatings to enhance their performance and longevity. Customization options may include treatments such as heat treatment, hardening, or plating to improve wear resistance and hardness. Coatings like zinc, nickel, or black oxide can provide corrosion resistance. These surface treatments and coatings can be tailored based on the machinery’s operating environment and specific requirements, ensuring extended pulley life and optimal performance.

6. Custom Markings and Engravings:

HTD pulleys can also be customized with markings or engravings for identification or branding purposes. Customized markings can include part numbers, logos, or specific information relevant to the machinery or equipment. These markings help with easy identification, tracking, and maintenance of the pulleys within the system.

In summary, HTD pulleys can be customized for specific machinery and equipment by adjusting their size, dimensions, tooth profile, pitch, material selection, keyway and mounting options, surface treatments, coatings, and even custom markings. This customization ensures that the pulleys are tailored to meet the unique requirements of the application, enabling optimal performance, durability, and compatibility with the machinery or equipment.

htd pulley

Can you explain the design features and profile of an HTD pulley?

An HTD pulley, which stands for “High Torque Drive” pulley, has specific design features and a unique tooth profile that distinguishes it from other pulley types. Here’s a detailed explanation of the design features and profile of an HTD pulley:

1. Tooth Profile:

The tooth profile of an HTD pulley is trapezoidal in shape. It consists of a series of trapezoidal teeth evenly spaced around the circumference of the pulley. The tooth profile is specifically designed to match the shape of HTD belts, which also have trapezoidal teeth. The trapezoidal tooth profile ensures a larger contact area between the pulley and the belt, enabling efficient power transmission and improved torque capacity.

2. Tooth Pitch:

The tooth pitch of an HTD pulley refers to the distance between the center of one tooth to the center of the adjacent tooth. HTD pulleys are available in different tooth pitches, such as 3 mm, 5 mm, 8 mm, and 14 mm, among others. The tooth pitch must match the tooth pitch of the corresponding HTD belt to ensure proper engagement and power transmission. It is essential to select a pulley with the correct tooth pitch for a given application.

3. Tooth Angle:

The trapezoidal teeth of an HTD pulley have a specific tooth angle. The tooth angle refers to the angle between the tooth face and a line perpendicular to the pulley’s axis. The tooth angle for HTD pulleys is typically 20 degrees. This angle ensures a positive engagement between the pulley and the belt, minimizing the risk of slippage and providing reliable power transmission.

4. Tooth Shape:

The teeth of an HTD pulley have a slightly curved or rounded shape to facilitate smooth engagement and disengagement with the HTD belt. The curved tooth shape allows for gradual contact between the pulley and the belt, reducing stress concentration and minimizing the risk of tooth or belt damage. The curved tooth shape also helps reduce noise and vibration during operation.

5. Flanges and Belt Retention:

HTD pulleys often feature flanges on either side of the toothed section. The flanges help keep the HTD belt properly aligned and prevent it from slipping off the pulley during operation. The flanges provide lateral guidance and improve the overall stability of the belt. In some cases, the flanges may have recessed areas or grooves to accommodate belt guides or tensioning mechanisms.

6. Material and Construction:

HTD pulleys can be made from various materials, including aluminum, steel, or plastic. The material choice depends on factors such as the application requirements, operating environment, and cost considerations. Aluminum pulleys are lightweight and commonly used in applications where weight reduction is important. Steel pulleys offer high strength and durability, suitable for heavy-duty applications. Plastic pulleys are often used in applications where corrosion resistance, low noise, and cost-effectiveness are priorities.

7. Number of Teeth:

HTD pulleys are available in different configurations with varying numbers of teeth. The number of teeth affects the speed ratio and the torque capacity of the pulley system. Pulleys with more teeth provide higher torque capacity but may result in a larger pulley size. The selection of the appropriate number of teeth depends on the specific application requirements, including the desired speed, torque, and space limitations.

In summary, an HTD pulley features a trapezoidal tooth profile designed to match HTD belts. Its design includes specific tooth pitch, tooth angle, tooth shape, flanges for belt retention, and a choice of materials. The design features and tooth profile of an HTD pulley ensure efficient power transmission, accurate timing, reduced slippage, and reliable operation in various applications requiring high torque capacity and precise synchronization.

China high quality Mxl XL L Htd 3m 5m 8m Aluminum Alloy Timing Synchronous Automotive Rubber Poly V Transmission Belt Pulley   pulley system	China high quality Mxl XL L Htd 3m 5m 8m Aluminum Alloy Timing Synchronous Automotive Rubber Poly V Transmission Belt Pulley   pulley system
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