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

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

What role do HTD pulleys play in automotive engines and accessory drive systems?

HTD pulleys play a significant role in automotive engines and accessory drive systems. Here’s a detailed explanation of their role and importance in these applications:

1. Belt Driven Accessories:

In automotive engines, various accessories such as the alternator, power steering pump, water pump, and air conditioning compressor are typically driven by belts. HTD pulleys are used in the accessory drive system to transmit power from the engine crankshaft to these accessories via the belt. The pulleys provide a connection point for the belt and enable the transfer of rotational motion from the engine to drive these accessories.

2. Efficient Power Transmission:

HTD pulleys contribute to efficient power transmission in automotive accessory drive systems. The tooth profile of HTD pulleys matches the tooth profile of HTD belts, ensuring precise engagement and power transfer. The trapezoidal tooth shape of the pulleys allows for a larger contact area with the belt, minimizing slippage and maximizing energy transmission. This efficient power transmission ensures that the accessories receive the necessary power from the engine to operate optimally.

3. Accurate Synchronization:

Timing and synchronization are crucial in automotive engines and accessory drive systems. HTD pulleys help maintain accurate timing and synchronization between the engine and the driven accessories. The tooth profile of the pulleys ensures precise engagement with the belt, allowing for consistent rotation and timing of the accessories. This accurate synchronization ensures that the accessories operate in harmony with the engine, optimizing overall system performance.

4. Belt Tension and Adjustment:

HTD pulleys play a role in maintaining proper belt tension and adjustment in automotive accessory drive systems. The pulleys are designed to accommodate belt tensioners and idler pulleys, which help maintain the appropriate tension in the belts. Proper tension ensures that the belts remain securely engaged with the pulleys, preventing slippage and ensuring efficient power transmission. HTD pulleys provide the necessary support and alignment for tensioner and idler pulleys, enabling proper belt tensioning.

5. Durability and Reliability:

Automotive engines and accessory drive systems operate under demanding conditions, including high temperatures, vibrations, and varying loads. HTD pulleys are designed to be durable and reliable to withstand these conditions. They are constructed using high-quality materials such as aluminum or steel, which provide strength and resistance to wear. HTD pulleys undergo rigorous testing to ensure their durability and long service life, reducing the need for frequent maintenance or replacements.

6. System Integration and Compatibility:

HTD pulleys are designed to integrate seamlessly into automotive engines and accessory drive systems. They are available in various sizes, configurations, and mounting options to suit different engine designs and space constraints. Additionally, HTD pulleys are compatible with HTD belts, which are widely used in automotive applications. This compatibility ensures proper fitment and optimal performance when integrating HTD pulleys into automotive engines and accessory drive systems.

In summary, HTD pulleys play a crucial role in automotive engines and accessory drive systems by facilitating efficient power transmission, ensuring accurate synchronization, maintaining proper belt tension, and providing durability and reliability. These pulleys contribute to the smooth and reliable operation of the accessory drive system, allowing the engine to power various accessories effectively.

htd pulley

How does the tooth profile of HTD pulleys impact their performance?

The tooth profile of HTD pulleys plays a crucial role in determining their performance characteristics. Here’s a detailed explanation of how the tooth profile of HTD pulleys impacts their performance:

1. Efficient Power Transmission:

The tooth profile of HTD pulleys is specifically designed to optimize power transmission efficiency. HTD pulleys have a trapezoidal tooth shape, which allows for a larger contact area between the pulley and the belt compared to other pulley types. This increased contact area improves the power transfer efficiency by reducing the concentration of forces on individual teeth. The trapezoidal tooth profile ensures better load distribution and minimizes slippage, resulting in efficient power transmission from the pulley to the belt.

2. Accurate and Reliable Timing:

The tooth profile of HTD pulleys is designed to provide accurate timing and reliable synchronization in timing belt systems. The teeth on HTD pulleys interlock precisely with the teeth on the belt, ensuring consistent and precise motion control. The shape and dimensions of the teeth are engineered to match the corresponding tooth profile of HTD belts. This accurate tooth engagement and synchronous operation are critical in applications where precise timing is required, such as in robotics, automation, and CNC machines.

3. Reduced Backlash:

Backlash refers to the slight movement or play between the teeth of a pulley and the corresponding belt. The tooth profile of HTD pulleys is designed to minimize backlash, which is beneficial for system performance. By reducing backlash, HTD pulleys ensure precise motion control and power transmission. Minimizing backlash helps maintain accurate positioning, prevents undesired motion or vibration, and improves the overall efficiency of the system. It contributes to smoother operation and better system response in applications where precise synchronization is crucial.

4. Noise Reduction:

The tooth profile of HTD pulleys also impacts the noise level during operation. HTD pulleys are known for their quiet operation due to their tooth profile design. The trapezoidal tooth shape minimizes noise generation by reducing the impact and engagement forces between the pulley and the belt. This noise reduction is particularly advantageous in applications where noise control is essential, such as in office equipment, medical devices, and consumer electronics. The tooth profile of HTD pulleys contributes to a quieter working environment.

5. Compatibility with HTD Belts:

The tooth profile of HTD pulleys is specifically designed to match the tooth profile of HTD belts. HTD belts have a trapezoidal tooth shape that corresponds to the tooth profile of HTD pulleys. This compatibility ensures optimal engagement between the pulleys and belts, maximizing power transmission efficiency and reliability. It is important to note that HTD pulleys are not compatible with other belt profiles, and using mismatched pulleys and belts can result in poor performance and reduced efficiency.

In summary, the tooth profile of HTD pulleys significantly impacts their performance. It enables efficient power transmission, accurate timing, reduced backlash, noise reduction, and compatibility with HTD belts. The design and dimensions of the tooth profile are carefully engineered to optimize system performance, ensure reliable operation, and meet the specific requirements of various applications.

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