Bearing, Thrust 51103

Exactly 17mm bore and 30mm OD, so it dropped right onto the leadscrew shaft without any filing or sanding needed. My lathe’s carriage now moves with consistent resistance instead of that irritating clunk at the end of each pass.

Was tired of dealing with slop in my lathe's lead screw, but this bearing tightened everything up nicely. The 9mm width matched the original part exactly, and installing it took only a few minutes.

The 17mm bore fit my SC4 spindle perfectly, and the 9mm width sat flush without any shimming. I replaced an old worn one, and the feed runs smooth and quiet now, just like it should.