10-Pack Hybrid Ceramic Bearings SR188ZZ 1/4" x 1/2" x 3/16" ABEC-5 Shielded Inner Diameter - 2 inch (2") Because the inner ring

Because the inner ring

Width/Height/thickness=35mm

Size: 10 x 30 x 9 mm

A handy guide to common uses and benefits:

Limiting Speed: Grease Lubrication: 7

10-Pack Hybrid Ceramic Bearings SR188ZZ 1/4" x 1/2" x 3/16" ABEC-5 Shielded Inner Diameter - 2 inch (2") Because the inner ringSR188ZZ ABEC 5 Ball Bearings Stainless Steel and Ceramic Balls 1 4" x 1 2" x 3 16" inch 10 Ball Bearings SR188ZZ Stainless Steel with Ceramic Balls ABEC 5 Ball Bearings, a standard bearing size with dimensions commonly used across many industries: 1 4"x 1 2"x 3 16" inch, each Comes with double metal shields (ZZ) to keep out dust and dirt, additionally, these bearings come pre lubricated with grease for smooth operation. SR188ZZ Ball Bearing Deep