Stainless Sheilded Bearings
 
These bearings come from Shimano, Daiwa and Zotty 
 
All sizes are in metric (mm)
 
10x20x5 (Daiwa) 
9x17x5 'Shouldered' 19mm Shoulder (Daiwa) Basia pinion bearing
10x19x5 (Shimano RD14101) Big pit pinion top bearings
9x17x5 (Shimano RD8374) Main drive gear bearing for big pits
9x4x5 (Shimano RD8554) 
8x12x3.5 (Shimano Rd14399) Pinion bottom bearing for big pits
5x8x2.5 (zotty)
7x17x5 (zotty)
 
 
 
How to measure a bearing:
 
Example (10x20x5)
10 = INSIDE DIAMETER
20 = OUTSIDE DIAMETER 
5 = WIDTH