R20 Nachi (JAF) Bearing Open Japan 1 1/4" x 2-1/4" x 3/8 chrome ball bearings 344" width

344" width

C4 bearings have extra internal space to prevent binding under heat or speed:

Equal: 6021 RS / 6021 2RS

ID (inner diameter)/Bore: 38mm

and low friction at high speed

R20 Nachi (JAF) Bearing Open Japan 1 1/4" x 2-1/4" x 3/8 chrome ball bearings 344" widthR20 Nachi (JAF) Open Radial Ball Bearing 1 1 4" x 2 1 4" x 3 8" inch Made in Japan R20 Nachi (JAF) Open Ball Bearing, inner diameter is 1 1 4", outer diameter is 2 1 4" and width is 3 8", Made in Japan R20 Nachi (JAF) Ball Bearing Nachi Deep groove Ball Bearing Closures: Open Dimensions: 1 1 4" x 2 1 4" x 3 8" inch ID (inner diameter) Bore: 1 1 4" inch OD (outer diameter): 2 1 4" inch Width: 3 8" inch Quantity: 1 Bearing Dynamic load rating Cr: 2,973