6303-NSE Nachi One Contact Seal Bearing 17mm x 47mm x 14mm Made in Japan 6303-NSE Nachi One Contact Seal Bearing, 6303-NSE Nachi is non-grease,Made in Japan, the 6303-NSE inner diameter is 17mm, the 6303-NSE outer diameter is 47mm, 6303-NSE width is 14mm.