Bearing, Thrust 51100

Came apart a bit when I first took it out of the bag, but snapped right back together. Sits perfectly in place on the cross slide and the rotation is buttery smooth with zero wobble.

Fit perfectly into the SC4 cross slide slot, and the thrust surface feels nicely machined with zero play once seated. Took about five minutes to swap out, and the slide now moves smooth as butter.

Had a small wobble in my cross slide that this thrust bearing fixed completely; it's a perfect direct replacement for the SC4-209 part. The steel races feel nicely finished and the balls roll smoothly.