Product Overview
The Erayak camshaft is a genuine spare part for gasoline generator engines, responsible for controlling valve opening and closing timing. A well-manufactured camshaft ensures smooth combustion cycles, stable RPM, and reliable power output. As a factory original part, it delivers consistent quality, durability, and predictable performance — ideal for wholesale stock, service centers, and spare-parts distributors.
For engine model compatibility or dimension confirmation, please contact your dedicated customer service representative.
Key Features
Precise Valve Timing Control
Accurately opens and closes intake and exhaust valves to maintain proper combustion timing and stable engine performance.
Smooth Engine Operation
Reduces issues such as rough idle, backfiring, power drop, and unstable RPM caused by worn or deformed camshafts.
High-Durability Alloy Steel
Heat-treated, wear-resistant material ensures long service life, even under long running hours or heavy-load usage.
Consistent Combustion Efficiency
Supports clean ignition and efficient fuel burn, improving generator reliability for home backup, construction, and rental equipment.
Reduced Noise & Vibration
Balanced machining and smooth surface finishing help lower mechanical noise and friction.
Easy Installation & Replacement
Designed as a direct-fit engine component, simplifying maintenance for technicians, repair shops, and distributors.
Camshaft Working Principles
- The camshaft rotates in sync with the crankshaft
- Controls the exact opening and closing timing of intake and exhaust valves
- Ensures proper air-fuel mixture enters the combustion chamber
- Regulates exhaust flow for stable power output
- Maintains combustion efficiency during:
- Load changes
- Starting and acceleration
- Extended running periods
A reliable camshaft helps maintain smooth engine performance, prevents timing failure, and reduces customer complaints.
After-Sales & Dealer Support
- Spare Parts Coverage: Full accessory support for core Erayak generator models.
- Inventory & Lead Time: Fast-moving parts in stock. 24–72h dispatch for stock items.
- Matching Support: Model-based fitment confirmation to avoid wrong orders.
- Dealer Bulk Supply: Dealer pricing, MOQ and regional supply supported. Contact us for terms.
Erayak, founded in 2004, operates a modern manufacturing base in the Wenzhou Binhai Economic & Technological Development Zone. With dedicated workshops for generator systems, electrical components, and precision parts, we ensure stable quality through strict in-house QC and support OEM/ODM customization.
Why Choose Erayak Spare Parts?
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Genuine factory parts with consistent performance
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Stable engine operation and reduced return risk
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Complete product coverage for generators and small engines
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Large inventory and fast delivery for global buyers
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Multiple quality and pricing levels for different markets
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Professional support for fitment verification and sourcing
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Strong R&D capability and certified production (ISO9001)
Wholesale Support
Flexible MOQ, steady production capacity, and OEM/ODM cooperation available.
For pricing, MOQ, and compatibility, please contact customer service.
The camshaft is a key engine part in a gasoline generator.
Its main job is to control the opening and closing of the intake and exhaust valves at the correct time, so that:
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• Fresh air–fuel mixture can enter the cylinder
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• Exhaust gas can leave the cylinder
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• The engine runs smoothly and produces stable power
In a generator engine, if the camshaft wears out or goes out of timing, the engine may:
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• Become hard to start
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• Lose power under load
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• Run with unstable RPM or strange knocking noises
How the Camshaft Works
Inside the engine, the crankshaft drives the camshaft through gears or a chain.
As the camshaft rotates, the cam lobes push the valve train (rocker arms, valves) to open and close at precise moments.
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Correct timing = smooth combustion, stable output
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Wrong timing = misfire, backfiring, weak power, high fuel consumption
That’s why using a reliable, well-machined camshaft is important for generator performance and service life.
Some camshafts use a nylon (engineering plastic) gear on the camshaft:
Advantages:
Nylon gear runs more quietly than a steel gear, helping reduce overall mechanical noise.
Less rotating mass, easier for the engine to spin.
Generally cheaper to produce, suitable for light and medium-duty generators.
Limitations:
Lower heat and impact resistance compared with steel
More sensitive to very high temperatures or severe overload
In long-term heavy-duty usage, nylon teeth may wear faster than steel
Nylon gear camshafts are usually used in home backup generators, light-duty portable units, and applications where low noise and cost are more important than extreme durability.
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