This professional drive system includes a splined drum (clutch cup) with a replaceable rim. The rim floats freely on the spline, allowing the saw chain to align with the groove of the bar. Comes complete with (3/8" x 7) spline.
Drive sprocket bearing sold separately.
System Part #: 108565X
Model: 357 XP
Sprocket System Design: 3/8” pitch chain - 7 Tooth
Rim #: 68210
Bearing #: 11893
Comstock Logging Supplies, Inc. stresses the importance of regular maintenance. This does not stop at the sprocket; a misused sprocket will cause patterns of chain wear which can damage the guide bar and reduce the life of chain, bar, and sprocket. Proper maintenance includes:
• Proper chain tension; loose chain tension is a leading cause of sprocket problems.
• Clean all build-up from splined hub so the rim can float freely.
• Never run an old chain on a new sprocket.
• Apply grease to the clutch drum’s bearings each time the sprocket is removed.