Bafang BBS needle bearing NK17/16

This bearing supports the radial loads and is located in the axle sleeve (between axle and sleeve).

Dimensions:
Inside: 17 mm, outside: 25 mm, width: 16 mm

Was supplied directly by Bafang, but is a standard size and can also be found at a stock store. There are also variants with a groove in the middle, but that shouldn’t make any difference.