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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.
Through the fine control of the whole process of product production, we provide our customers with cost-effective Belts, Treadmill Motor Drive Belt, Cvt Transmission Belt. The company has always been adhering to the service concept of 'customer demand as the center', and business tenet of 'quality first, integrity-based'. Continuous innovation and technical advantages are the characteristics of our products. Our company has rich experience in design and production.
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.
Meanwhile, our firm staffs a group of experts devoted to your development of Rubber Automotive Timing Belt OEM Rubber V Belt. We insist on pioneering and enterprising and innovative, hoping to win market opportunities in innovation and lead future development. Through continuous improvement, our company has consolidated its position as an industry leader in terms of quality.
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