[Lifetime Warranty] 3/8" 7T Clutch Drum Rim Sprocket Needle Bearing with Worm Gear E-Clip Kit - Compatible with Stihl MS361 MS440 MS461 MS460 044 046 Chainsaw 1128 007 1000
Clutch drum, sprocket, needle bearing, and worm gear kit for Stihl MS361 MS440 MS460 chainsaws.
Clutch drum, sprocket rims, needle bearing, E-clip, and worm gear kit for Stihl MS361 MS440 MS461 chainsaws.
Clutch drum and clutch assembly for Stihl chainsaws with dimension labels showing 2.98in, 3.10in, 0.437in, and 2.9in.
Clutch drum and sprocket assembly for Stihl MS440 chainsaws, featuring detailed close-ups of the clutch components.
Clutch drum, rim sprocket, needle bearing, and worm gear kit for Stihl MS361 MS440 MS460 chainsaws.
BlueStars sprocket kit compatibility graphic for Stihl MS361 MS440 MS460 MS461 chainsaws.
Infographic showing chainsaw clutch drum and assembly for Stihl MS361 MS440 MS461 models.
Installation guide for Stihl chainsaw clutch drum rim sprocket and needle bearing replacement.
Clutch drum, rim sprocket, needle bearing, and worm gear kit for Stihl MS361 MS440 MS460 chainsaws.
Clutch drum, sprocket, needle bearing, and worm gear kit for Stihl MS361 MS440 MS460 chainsaws.
Clutch drum, sprocket rims, needle bearing, E-clip, and worm gear kit for Stihl MS361 MS440 MS461 chainsaws.
Clutch drum and clutch assembly for Stihl chainsaws with dimension labels showing 2.98in, 3.10in, 0.437in, and 2.9in.
Clutch drum and sprocket assembly for Stihl MS440 chainsaws, featuring detailed close-ups of the clutch components.
Clutch drum, rim sprocket, needle bearing, and worm gear kit for Stihl MS361 MS440 MS460 chainsaws.
BlueStars sprocket kit compatibility graphic for Stihl MS361 MS440 MS460 MS461 chainsaws.
Infographic showing chainsaw clutch drum and assembly for Stihl MS361 MS440 MS461 models.
Installation guide for Stihl chainsaw clutch drum rim sprocket and needle bearing replacement.
Clutch drum, rim sprocket, needle bearing, and worm gear kit for Stihl MS361 MS440 MS460 chainsaws.
Lifetime Warranty

[Lifetime Warranty] 3/8" 7T Clutch Drum Rim Sprocket Needle Bearing with Worm Gear E-Clip Kit - Compatible with Stihl MS361 MS440 MS461 MS460 044 046 Chainsaw 1128 007 1000

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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.
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Product Dimensions
1 x 1 x 1 inches
Item Weight
13.5 ounces
Manufacturer
BlueStars

FAQ

This kit is compatible with Stihl 044, 046, MS361, MS362, MS362C, MS440, MS441, MS460, and MS461 chainsaws.
This assembly replaces OEM part number 1128 007 1000. It is also a suitable replacement for components referenced by 1135 160 2050.
You should inspect your clutch drum if the chainsaw chain continues to rotate while the engine is idling, or if you notice excessive vibration during cutting. Additionally, if you see deep grooves or 'trenching' on the sprocket rim where the drive links sit, or if the needle bearing feels gritty or has play, it is time for a replacement to prevent damage to the crankshaft or clutch assembly.
To perform this replacement, you will need a piston stop tool to lock the crankshaft, a clutch removal tool (or a suitable punch and hammer to turn the clutch clockwise to loosen), a flat-head screwdriver for the E-clip, and a pair of needle-nose pliers for handling the needle bearing.
Always inspect the needle bearing for signs of heat discoloration or lack of lubrication. It is best practice to clean the crankshaft end and apply a light coat of high-quality chainsaw grease to the new needle bearing before installation. If the worm gear shows signs of stripped teeth, ensure the oil pump drive is also inspected to maintain proper chain lubrication.
This is a moderate-level repair. Once you have removed the side cover and bar, the entire process generally takes between 20 to 40 minutes, depending on how easily the clutch assembly breaks loose from the crankshaft.