Products Description
ECHO CS370/CS400/CS420/CS440/CS450 Chainsaw Clutch Drum Needle Cage
Precision Needle Bearing Replacement for Echo Chainsaw Clutch Systems
This clutch drum needle cage is a direct replacement bearing for the clutch assembly on Echo CS370, CS400, CS420, CS440, CS450, and compatible chainsaw models. The needle bearing sits between the clutch drum and the crankshaft, enabling smooth rotation of the clutch drum during chain engagement and disengagement. A worn or seized needle bearing causes clutch slippage, chain movement at idle, noisy operation, and poor power transfer. This precision-engineered bearing restores smooth clutch operation and extends the service life of your clutch drum and crankshaft.
Technical Profiles & Materials
Precision Needle Roller Design – Engineered with caged needle rollers that reduce friction between the clutch drum and crankshaft, ensuring smooth rotation under load and reliable clutch disengagement at idle. Made from hardened bearing steel for durability under high RPM and vibration.
OEM-Spec Replacement Compatibility – Replaces genuine Echo part numbers 17501200831, 17501214630, 10001235430, and V555000170 depending on model variant. Designed to match original equipment dimensions and mounting specifications.
Cross-Model Compatibility – Fits Echo CS301, CS350TES, CS360T, CS370, CS400, CS420ES, CS440, CS4400, CS450, and CS450P models. Also compatible with select Shindaiwa chainsaw models.
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | OEM Part No. (Primary) | 17501200831 |
| 2 | Alternative OEM Part Nos. | 17501214630, 10001235430, V555000170 |
| 3 | Compatible Models | CS301, CS370, CS400, CS420ES, CS440, CS4400, CS450, CS450P |
| 4 | Also Compatible | CS350TES, CS360T, CS3900, CS4200ES |
| 5 | Material | Hardened bearing steel / Metal |
| 6 | Function | Clutch drum support / friction reduction |
| 7 | Installation Position | Between clutch drum and crankshaft |
| 8 | Lubrication Required | Lithium-based grease recommended during installation |
Products Application
Clutch System Overhaul & Maintenance
The needle cage is a routine wear part that should be inspected when servicing the clutch drum or sprocket. During removal, the bearing sits between the clutch drum and collar. Apply lithium-based grease before reassembly. If the bearing is seized, worn, or fails to rattle when shaken, replacement is required.
Diagnosing Clutch Failure and Noise
A failing needle cage can cause the chain to spin at idle, produce grinding noises, or prevent the chain from turning properly. Removing the clutch drum and inspecting the bearing for wear, discoloration, or deformation is essential. A quick test is to hold the bearing near your ear and shake it-if it's silent, the bearing is likely seized and must be replaced.
Chainsaw Restoration & Rebuild
When rebuilding or restoring Echo CS370, CS400, CS420, CS440, or CS450 chainsaws, replacing the needle cage is a fundamental step. It is often included in clutch drum and sprocket kits. The bearing should always be lubricated with lithium-based grease during installation to prevent premature failure.
Quality and Craftsmanship Details
Products Package
About Us
As a premier garden machinery parts supplier, Jiaxing Norsun Trading Co., Ltd. bridges global distributors with over 100 vetted China manufacturers. We streamline your B2B supply chain through strict quality control, flexible production, and factory-direct wholesale pricing. Partner with us for reliable, high-volume sourcing of precision-engineered outdoor power equipment components.
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FAQ
Q: How do I confirm which needle bearing fits my Echo chainsaw?
A:Check your chainsaw model number and serial number. The primary OEM part number for CS370, CS400, CS420, CS440, and CS450 is 17501200831. For CS440 with specific serial number ranges, 17501214630 is also used. For CS450, 10001235430 is referenced. Verify compatibility using your model and serial number.
Q: What are the symptoms of a worn needle cage?
A: Common symptoms include the chain spinning at idle (clutch not disengaging), grinding noises from the clutch area, clutch slippage, poor power transfer, and excessive play in the clutch drum. If the bearing is seized, the clutch drum may not rotate freely by hand. A simple test is to shake the bearing near your ear-if it is silent, the needles are seized and replacement is required.
Q: Can I reuse an old needle cage when replacing the clutch drum?
A: It is strongly recommended to replace the needle cage when replacing the clutch drum or sprocket. It is a wear component, and reusing an old bearing can cause premature failure of your new parts. The bearing should also be lubricated with lithium-based grease during installation.
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