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We’ve been making timing belts since 1999 — back when CR compound was still the industry standard and most Chinese factories were copying Japanese designs without understanding why they worked. Twenty-five years and one expensive warranty incident later, we’ve learned a few things about what makes a timing belt last.
Today, our IATF 16949 certified facility produces EPDM, CR, HNBR, PU, and FKM timing belts for distributors in over 100 countries. Whether you need automotive timing belts for the aftermarket or industrial timing belts for precision machinery, we’ve got the material science expertise and production capacity to deliver consistent quality at scale.
| Parameter | Specification |
|---|---|
| Tooth Profiles | T-type (Trapezoidal), HTD (High Torque Drive), STPD/GT (Super Torque), AT |
| Pitch Range | 2mm, 2.5mm, 3mm, 5mm, 8mm, 14mm, 20mm |
| Width Range | 4mm – 170mm |
| Length Range | 100mm – 6000mm+ (custom lengths available) |
| Temperature Range | -40°C to +150°C (varies by material) |
| Materials | EPDM, CR (Neoprene), HNBR, PU (Polyurethane), FKM (Fluororubber) |
| Cord Material | Fiberglass, Aramid (Kevlar), Steel cord |
| Tooth Surface | Nylon fabric covered for reduced friction and noise |
| Standards | ISO 5296, DIN 7721, JIS K 6372 |
| Certifications | IATF 16949, ISO 9001 |
Here’s something we learned the hard way in 2008: a perfectly manufactured belt with the wrong compound will fail. A decent belt with the right compound will outlast it every time.
We shipped a batch of CR timing belts to a Canadian distributor. Eighteen months later, they started cracking. The cold winters — temperatures the CR compound couldn’t handle — destroyed them. That $47,000 warranty claim taught us something textbooks don’t: material science isn’t where you save money.
We switched our entire automotive line to EPDM after that. Here’s why:
| Property | EPDM | CR (Neoprene) |
|---|---|---|
| Temperature Range | -40°C to +150°C | -30°C to +120°C |
| Ozone Resistance | Excellent | Moderate |
| Service Life | ~30% longer | Baseline |
| Cold Flexibility | Maintains flexibility at -40°C | Stiffens around -20°C |
| Cost | Higher | Lower |
| Best For | Modern automotive, outdoor equipment | General industrial, oil-exposed environments |
EPDM’s ethylene-propylene backbone gives it something CR can’t match: the molecular structure resists ozone degradation and maintains flexibility across a wider temperature range. In practical terms, that means EPDM timing belts don’t crack in Canadian winters or degrade from engine bay heat cycles.
CR still has its place — it’s more oil-resistant than EPDM, which matters in some industrial applications. But for automotive timing belts, EPDM is the modern standard. If your current supplier is still pushing CR for automotive applications, ask them why.
| Material | Temperature Range | Key Properties | Best Applications |
|---|---|---|---|
| EPDM | -40°C to +150°C | Excellent heat/ozone resistance, long service life | Automotive engines, outdoor equipment |
| CR (Neoprene) | -30°C to +120°C | Good oil resistance, cost-effective | General industrial, older vehicle models |
| HNBR | -30°C to +165°C | Superior oil + heat resistance, premium durability | High-performance automotive, demanding industrial |
| PU (Polyurethane) | -20°C to +80°C | High precision, excellent wear resistance, low elongation | CNC machines, 3D printers, positioning systems |
| FKM (Fluororubber) | -20°C to +200°C | Extreme heat resistance, chemical resistance | Chemical processing, extreme temperature environments |
Not sure which material fits your application? Contact our technical team with your operating conditions — temperature, chemical exposure, load profile — and we’ll recommend the optimal compound.
Different tooth profiles exist because different applications have different requirements. Here’s when to use what:
The classic. Trapezoidal teeth provide reliable power transmission for low-to-medium-speed applications. If you’re not sure what you need, T-type is probably the answer.
HTD’s curvilinear (circular arc) tooth design distributes load stress more evenly than trapezoidal teeth. The result: higher torque capacity and less tooth jumping under heavy loads.
When precision matters more than cost. GT and STPD profiles offer near-zero backlash — critical for servo drives and CNC equipment where positioning accuracy is measured in microns.
Our automotive timing belts are specifically designed for engine camshaft synchronization. We cover virtually all major vehicle brands including Toyota, Honda, BMW, Hyundai, Kia, Volkswagen, Audi, Ford, and Chevrolet. Each belt is manufactured to match OEM specifications for fit, function, and durability.
Our timing belts serve critical engine functions:
Compatible with passenger cars, light trucks, commercial vehicles, and heavy-duty trucks. See our full automotive belt range.
Beyond automotive, our timing belts power:
For industrial applications, see our industrial belt range.
With 130+ rubber compound formulations and 25 years of OEM experience, we offer comprehensive customization:
MOQ and lead times vary by specification. Contact our team for a customized quotation.
Every timing belt goes through our IATF 16949 certified quality system:
Our last IATF audit had zero major findings. That’s not luck — it’s 25 years of building systems that catch problems before they reach your warehouse.
EPDM handles heat better (-40°C to +150°C vs CR’s -30°C to +120°C), resists ozone degradation, and lasts approximately 30% longer under the same conditions. We switched our automotive line from CR to EPDM in 2008 after a costly warranty incident. CR is still suitable for general industrial applications where oil resistance matters more than temperature range, but for automotive timing belts, EPDM is the modern standard.
For automotive applications, typically every 60,000 to 100,000 miles (96,000 to 160,000 km) or every 5-7 years, whichever comes first. Actual intervals depend on vehicle manufacturer specifications, belt material, and operating conditions. EPDM belts generally last longer than CR belts. Always check your vehicle’s service manual for specific recommendations.
Standard sizes: 500 pieces minimum. Custom specifications: typically 1,000-2,000 pieces depending on complexity. MOQ may be flexible based on total order value. Contact us to discuss your specific requirements.
Yes. With 130+ rubber compound formulations and 25 years of manufacturing experience, we can produce timing belts that match or exceed OEM specifications from any major brand. We offer cross-reference capability for Gates, Dayco, Continental, Bando, and other brand part numbers. Send us the OEM part number or specifications, and we’ll develop a matching product.
Our timing belts are manufactured in an IATF 16949 certified facility — the highest quality standard for automotive component manufacturing. We also hold ISO 9001, ISO 14001, and ISO 45001 certifications. Additionally, our factory achieved aviation product certification in 2018, one of the rare achievements among Chinese belt manufacturers.
Yes. Free samples for qualified buyers. Standard size samples ship within 3 business days from stock. Custom specification samples take 7-10 business days. Contact us with your specifications.
Standard specifications: 15-20 business days after order confirmation. Custom specifications: 20-30 business days depending on complexity. Rush orders may be accommodated based on production schedule.
Looking for a reliable timing belt manufacturer? Contact LYBELT today for:
📧 Email: luxin@www.lybelt.com
📞 Phone/WhatsApp: +86 137 2291 3530
