6310-2NSENR Nachi Bearing 50mm x 110mm x 27mm With Snap Ring (C clip) Made in Japan 6310-2NSENR Nachi Bearing with a Snap Ring, the 6310-2NSENR inner diameter is 50mm, the 6310-2NSENR outer diameter is 110mm, 6310-2NSENR width is 27mm.