Products Description
MS660 Chainsaw Clutch Drum Needle Cage 10×16×13mm
Precision Clutch Bearing for STIHL 066 & MS660 Professional Saws
This 10x16x13mm needle cage is a precision clutch drum bearing designed for the STIHL 064, 066, MS660, MS640, and MS650 professional chainsaws . The bearing fits between the clutch drum and the crankshaft, enabling smooth rotation during chain engagement. With dimensions of 10mm inner diameter, 16mm outer diameter, and 13mm width, this Genuine STIHL part replaces OEM number 9512 933 2382 .
Technical Profiles & Materials
Precision Needle Roller Design – Engineered to handle the high torque and RPM output of the 91cc MS660 engine. The needle cage ensures smooth clutch drum rotation and reduces friction during chain engagement and disengagement .
OEM-Spec Replacement Fitment – Replaces STIHL OEM part number 9512 933 2382 . Also cross-references to 9512 003 3281 in some aftermarket listings . Fits STIHL 064, 064R, 066, MS640, MS650, MS660, and MS661C-M professional chainsaws .
Critical Drive Component – The needle cage sits between the clutch drum and the crankshaft, reducing friction and enabling the clutch drum to rotate freely when the engine drives the chain. Proper bearing function is essential for preventing clutch binding, which can cause the chain to run at idle or prevent the saw from starting .
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | OEM Part No. | 9512 933 2382 |
| 2 | Alternative Ref. | 9512 003 3281 |
| 3 | Inner Diameter | 10 mm |
| 4 | Outer Diameter | 16 mm |
| 5 | Width | 13 mm |
| 6 | Compatible Models | STIHL 064, 066, MS640, MS650, MS660, MS661C-M |
| 7 | Bearing Type | Needle cage / Clutch drum bearing |
| 8 | Material | Hardened steel |
| 9 | OEM Availability | Genuine STIHL part |
Products Application
Clutch Drum Assembly Replacement
This needle cage is a critical component of the MS660 clutch system, fitting between the clutch drum and the crankshaft. It is included in complete 3/8" pitch clutch drum kits, ensuring all drive components are renewed simultaneously when the clutch drum or sprocket is replaced .
Clutch & Drive System Overhaul
When the MS660 exhibits clutch engagement issues, chain movement at idle, or poor power transfer, the needle cage may be worn or damaged. This bearing is a standard wear component in professional saws and should be replaced during clutch servicing. Professional users have noted that aftermarket bearings may require more careful fitment than OEM versions .
Preventative Maintenance
For professional arborists and forestry workers, replacing the clutch needle cage during scheduled maintenance prevents field failures and ensures consistent clutch engagement. Quality genuine and aftermarket bearings are available from multiple suppliers .
Quality and Craftsmanship Details
Products Package
About Us
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FAQ
Q: How do I confirm this needle cage fits my MS660?
A:Check your chainsaw model number on the housing. This 10x16x13mm needle cage fits STIHL 064, 066, MS640, MS650, MS660, and MS661C-M models . It replaces OEM part number 9512 933 2382. Do not confuse with the smaller 10x13x10mm bearing (OEM 9512 933 2260) used on smaller saws .
Q: What are the symptoms of a worn needle cage?
A: Symptoms include the chain running at idle (clutch not disengaging), clutch drum binding, difficulty starting, or unusual noise from the clutch area. A worn or improperly fitted bearing can also cause the clutch to fail to engage properly under load .
Q: What is the difference between the 10x16x13mm and the 10x13x10mm needle cage?
A: The 10x16x13mm bearing is used on larger professional saws like the MS660 and has a larger outer diameter (16mm vs 13mm) and width (13mm vs 10mm) . The smaller 10x13x10mm bearing is used on saws like the MS250, MS170, and MS180 series . These two sizes are not interchangeable .
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