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Automotive timing belt also called engine timing belt, it's mainly used for OHC drive, applying to the condition of various speed range and high temperature transmission conditions. Rubber timing belts made from HNBR can withstand a wide range of temperatures and still maintain flexibility. It has greater advantages than chain drive.
We adhere to the interests of all relevant parties, firm confidence, fulfill the mission, and strive to build the company into an international manufacturer of Rubber V Belt, Car Drive Belt, PJ Belt that trusted by the public and preferred by customers. We will further expand the field, improve the mechanism, create higher value for customers, and boost the continuous improvement of the comprehensive competitiveness of enterprises. Our company maintains a high market share in the domestic market and exports to the international market.
Features
● Low noise level & longer service life
● Strong transmission capacity
● High grade HNBR rubber for superior heat and contamination resistance.
● Aramid reinforced nylon jackets and backsides increase durability and lifetime.
● Wide Range of Load Capacities and Speeds
Specification
TIMING BELT | |||
Section | Pitch (mm) | Tooth Height (mm) | Belt Height (mm) |
ZA | 9.525 | 1.91 | 4.10 |
ZB | 9.525 | 2.92 | 4.5 |
ZH | 9.525 | 3.50 | 5.50 |
YH | 8.00 | 3.04 | 5.20 |
ZR | 9.525 | 3.20 | 5.7 |
YS | 8.00 | 3.04 | 5.2 |
ZS | 9.525 | 3.53 | 5.7 |
YA | 8.00 | 2.95 | 5.2 |
ZAS | 9.525 | 2.32 | 4.62 |
ZBS | 9.525 | 2.76 | 5.06 |
S8M | 8.00 | 3.05 | 5.30 |
YU | 8.00 | 3.02 | 5.20 |
FS | 9.525 | 3.05 | 5.35 |
MY | 8.00 | 3.06 | 5.20 |
MR | 9.525 | 3.54 | 5.69 |
RU | 9.525 | 3.41 | 5.40 |
Applications
Automotive engines-exhaust & inlet valves
Production Details
① Superior HNBR backing
② Superior Fibre-glass cord
③ High modulus Fibre loaded HNBR rubber compound
④ Nylon 66 stretch fabric teeth for high wear resistance
Timing Belt Failure Analysis
1. Heat Degradation
Appearance: Cracking from high temperature operation, rubber
Cause
When rubber belts operate at elevated temperatures (greater than 185°F) for prolonged periods of time, the rubber compound gradually hardens resulting in back cracking due to bending.
These cracks typically remain parallel to the belt teeth and usually occur over land areas (in between belt teeth), as illustrated in picture. Belts generally fail due to tooth shear, which often leads to tensile cord fracture.
Solutions
To determine if a special high-temperature belt construction will improve the belt performance in specific applications, contact a Pioneer Representative.
2. Foreign Objects
Appearance: Tensile cord failure from debris
Cause
The introduction of foreign objects between a belt and sprocket often damages both belt teeth and tensile cords.
Tensile cords often fracture internally (see Figure 3) or fail later due to crimping, as shown in Figure 4. Once a portion of the tensile cords have fractured, the remaining tensile strength of the belt has been reduced considerably.
Solutions
If belt damage from debris is noticeable, the belt should be replaced and the sprockets checked for damage. Damaged sprockets should also be replaced.
We are based on the manufacturing industry and are engaged in producing and selling OEM Auto Spare Part Rubber Automotive Timing Belt in the spirit of being proactive. We have concentrated all our advantages to increase technological innovation and market development. Pragmatic work, continuous innovation, beyond development and continuous progress are our strategic principles.
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