MS440 Sprocket Bearing

MS440 Sprocket Bearing

Key Features

• Facilitates smooth rotation of the clutch drum and sprocket assembly.
• Needle roller bearing design for high rotational speeds.
• Durable steel construction for longevity.
• Direct replacement for the original equipment part.

Replaces / Cross-Reference Part Numbers

• OEM Part Number: 9512-933-2380

Compatibility & Fitment

• Fits Stihl Chainsaw Models: 034, 036, 044, 046, 066, GS461, MS340, MS341, MS360, MS361, MS362, MS440, MS441, MS460, MS461, MS640

When to Replace

• The chain continues to spin at idle (chain creep).
• A grinding or rough noise is heard from the clutch area.
• The sprocket feels rough or does not spin freely when turned by hand.
• Visible damage, such as a broken cage or missing needles.
• Recommended to replace whenever the clutch drum or sprocket is replaced.

Installation Tips

• Ensure the crankshaft stub is clean and free from old grease or debris.
• Apply a light coat of high-temperature grease to the new bearing before installation.
• Slide the bearing onto the crankshaft carefully; do not use excessive force.
• Inspect the inside surface of the clutch drum for wear or scoring where the bearing rides.