Products Description
MS651 Chainsaw Clutch Needle Cage 10x16x12mm
Precision Clutch Bearing for STIHL Professional Saws
This 10x16x12mm needle cage is the clutch drum bearing used on STIHL MS651 and a range of other professional chainsaws. It fits between the clutch drum and the crankshaft stub, enabling smooth rotation of the clutch drum during chain operation. This Genuine STIHL part (OEM 9512 933 2380) supports the high-speed, high-load demands of professional saws, reducing friction and ensuring reliable power transfer from the engine to the chain. The needle cage is an essential wear component that should be inspected and replaced during clutch servicing if it shows signs of damage or wear.
Technical Profiles & Materials
Precision Needle Roller Design – The 10x16x12mm needle cage contains precision-ground needle rollers that support smooth rotation of the clutch drum on the crankshaft stub, reducing friction and wear in the clutch assembly.
OEM-Spec Replacement Fitment – Genuine STIHL part manufactured to original equipment specifications. Replaces OEM part number 9512 933 2380. This 10x16x12mm bearing is for saws with a heavier-duty clutch drum; the smaller 10x13x10mm bearing is used on some saws and the two are not interchangeable.
Wide Model Compatibility – Fits a broad range of STIHL professional chainsaws including 034, 036, 044, 046, MS340, MS341, MS360, MS361, MS362, MS400C-M, MS440, MS441, MS460, MS461, and MS651. The larger 10x16x12mm bearing was introduced on certain models from specific serial numbers onward.
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | OEM Part No. | 9512 933 2380 |
| 2 | Inner Diameter | 10 mm |
| 3 | Outer Diameter | 16 mm |
| 4 | Width | 12 mm |
| 5 | Compatible Models | MS651, MS461, MS440, MS460, MS441, MS361, 044, 046, and many others |
Products Application
Clutch Servicing & Replacement
The 10x16x12mm needle cage should be inspected whenever the clutch is serviced, removed, or replaced. It is accessible by removing the clutch drum after disengaging the chain brake and unscrewing the clutch (left-hand thread, turn clockwise to remove). If the needle cage shows signs of scoring, wear, or damage, it should be replaced.
Noisy or Binding Clutch Drum
A worn or insufficiently lubricated needle cage can cause noises from the clutch area or make the sprocket difficult to turn. If the needle cage fails, the clutch drum can bind on the crankshaft, preventing normal chain operation. Replacing the needle cage and lubricating correctly resolves these issues.
Full Clutch Assembly Overhaul
When replacing the clutch drum, sprocket, worm gear, or clutch itself, it is standard practice to install a new needle cage. This ensures all rotating components are renewed and prevents premature wear of new parts. The 10x16x12mm bearing is a required component for saws with the heavier-duty clutch drum introduced on later models.
Quality and Craftsmanship Details
Products Package
About Us
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FAQ
Q: How do I confirm this 10x16x12mm needle cage fits my MS651?
A:Check your chainsaw model number and your existing clutch drum bearing. This 10x16x12mm bearing (OEM 9512 933 2380) fits STIHL MS651 and many other professional saws listed above. It is not interchangeable with the smaller 10x13x10mm bearing used on some saws. If replacing the clutch drum, verify the bearing size required for your specific saw.
Q: What are the symptoms of a worn or damaged needle cage?
A: Common symptoms include noise from the clutch area, a clutch drum that is difficult to turn by hand, or the chain spinning improperly. A seized or worn needle cage can cause the clutch drum to bind on the crankshaft, leading to clutch engagement issues. Regular inspection during clutch servicing is recommended to catch wear early.
Q: Do I need to lubricate the needle cage during installation?
A: Yes. The needle cage must be cleaned and lubricated with STIHL multipurpose grease during assembly to ensure smooth operation and prevent premature wear. Proper lubrication is essential for the bearing to function correctly under high-speed, high-load conditions. Apply grease to the bearing and the crankshaft stub before installing the clutch drum.
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