7/8″ 銑刀軸承 x 5/16″ 內徑 – Whiteside B5

The fit on my Whiteside bit was perfect right out of the pack, and the 7/8-inch outer diameter runs true with zero wobble. I've put it through a few heavy passes on oak and it's still spinning smooth as day one.

The 5/16-inch inner diameter seated perfectly on my bit spindle with zero wobble, and the 7/8-inch outer diameter tracked my template edge smoothly all afternoon. I've swapped bearings mid-project before and this one felt like the right precision part from the first spin.

The 7/8-inch outer diameter fits my template bit perfectly, no wobble at all once I snugged it down. I’ve put it through a few hours of edge work and it spins smooth and true, so this replacement should last me a good while.