7/8″ 銑刀軸承 × 內徑 3/16″ – Whiteside B28

The 3/16-inch inner diameter fit my Whiteside bit perfectly, no wobble at all. Spun smooth right out of the package, and it’s held up through a full afternoon of pattern routing without any heat buildup. Exactly what I needed.

Replaced the bearing on my pattern bit and it fit perfectly with zero wobble. The 7/8-inch size matched exactly what I needed for a smooth, chatter-free cut.

Installed this on my trim bit and it spun perfectly true right out of the package — no wobble at all. The 7/8-inch diameter matched my existing setup exactly, and the bearing itself feels noticeably smoother than the stock one.