Custom Timing Belt Pulleys Factory High Precision Suppliers in China

Custom Timing Belt Pulleys Factory High Precision Suppliers in China

High-precision universal timing-belt pulleys for synchronous power transmission with no slippage. As leading China suppliers and a professional factory, we offer customizable H7 precision bores in aluminum, steel, and cast iron for automation and robotics.



Product Detail

Our Universal Timing-Belt Pulleys are high-precision mechanical components engineered for seamless power transmission and synchronization between crankshafts and camshafts. Designed for rigorous industrial applications, these pulleys utilize a specialized tooth profile to eliminate slippage, ensuring that valves operate with absolute precision for optimum engine and machinery performance.

Crafted from premium-grade materials including Aluminum 6082, Steel C45, and GG25 Cast Iron, our pulleys are built to withstand extreme mechanical stress. Whether you require trapezoidal, T-toothed, or arc-toothed profiles, our comprehensive range is customizable in bore size and belt width to integrate perfectly into your specific drivetrain architecture.

Detailed Parameters

Material OptionsAluminum 6061/6082, Steel C45, Cast Iron GG25Tooth ProfilesTrapezoidal (XL, L, H, XH, XXH), T-toothed, Arc-toothed (HTD)
T-Profile SeriesT2.5, T5, T10, T20HTD/GT Series3M, 5M, 8M, 14M, 20M, GT2, GT3, GT5
Teeth Quantity10-150 teeth (Customizable)Inner Bore2-200mm (H7 precision or customized)
Belt Widths4mm to 50mm / 1/4" to 2" (Customizable)Surface TreatmentAnodize, Black Oxide, Phosphate, Galvanization
Balancing GradeDynamic Balance Grade 6.3 (For GG25 Cast Iron)ApplicationAutomotive, Industrial Machinery, Power Transmission

Key Advantages


Premium Durability

Utilizing C45 steel and GG25 cast iron to ensure maximum wear resistance and structural integrity.


Perfect Sync

High-precision tooth geometry prevents skipping and ensures exact timing in high-speed rotations.


H7 Precision Bore

Strict adherence to H7 tolerances for effortless mounting and reduced vibration during operation.


Dynamic Balancing

GG25 pulleys are dynamically balanced to Grade 6.3 to eliminate oscillation and extend bearing life.


Corrosion Resistance

Available in Black Phosphate and Anodized finishes to protect against oxidation in harsh environments.


Full Customization

Tailored tooth counts, bore diameters, and widths to meet unique industrial specifications.

Product Gallery

Management Platforms

Inventory Control

Real-time tracking of all pulley profiles from XL to GT5 to ensure rapid shipping.

Precision Milling

Advanced CNC machining platforms for H7 bore precision and customized tooth profiles.

Quality Assurance

Rigorous dynamic balancing checks (Grade 6.3) for all cast iron components.

Surface Treatment

Integrated phosphate and anodizing lines for consistent protective coatings.

OEM Logistics

Streamlined supply chain management for high-volume manufacturing partners.

R&D Customization

Collaborative engineering platform for developing bespoke timing solutions.

Investment Return Comparison

Performance MetricStandard PulleysOur Precision Pulleys
Operational LifespanModerateExtended (High Wear Resistance)
Synchronization AccuracyBasicHigh-Precision (No-Slip)
Vibration LevelsVariableMinimal (Grade 6.3 Balanced)
Installation EffortManual FitRapid (H7 Precision Bore)
Maintenance CostFrequent ReplacementLow (High Material Grade)

Frequently Asked Questions

Q: Which material is best for high-load industrial timing pulleys?

For high-load applications, GG25 Cast Iron or C45 Steel is recommended due to their superior strength and wear resistance compared to aluminum.

Q: What is the difference between T-toothed and HTD arc-toothed pulleys?

T-toothed pulleys use a trapezoidal profile suitable for general synchronization, while HTD (arc-toothed) profiles are designed for higher torque transmission and reduced belt wear.

Q: Do you offer customized bore sizes for timing pulleys?

Yes, we provide inner bores ranging from 2mm to 200mm with H7 precision, and we can customize any specific bore size to fit your shaft.

Q: Why is dynamic balancing important for GG25 cast iron pulleys?

Dynamic balancing (Grade 6.3) eliminates centrifugal imbalances, reducing noise and vibration, which protects the bearings and extends the overall machine life.

Q: What surface treatments are available to prevent rust?

We offer Black Phosphate, Black Oxide, and Galvanization for steel and iron pulleys, and Anodizing for aluminum pulleys to ensure maximum corrosion resistance.

Q: Can these pulleys be used in automotive engine timing systems?

Absolutely. Our timing pulleys are specifically designed to synchronize the crankshaft and camshaft, ensuring valves open and close at the precise moment for optimum performance.

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