FR188ZZ Flanged Ball Bearing 1/4" x 1/2" x 3/16" inch desk gears the N304 outer diameter is

the N304 outer diameter is 52mm and the N304 width is 15mm

32210 outer diameter is 90mm and 32210 width is 23mm

Tighter ABEC-5 tolerances improve rotational accuracy

and resist corrosion in both fresh and saltwater setups

and equipment where a compact

FR188ZZ Flanged Ball Bearing 1/4" x 1/2" x 3/16" inch desk gears the N304 outer diameter isFR188ZZ Flanged Shielded Ball Bearing 1 4" x 1 2" x 3 16" Inch, Double Metal Shields The FR188ZZ is a flanged deep groove ball bearing with metal shields on both sides. Designed for compact assemblies, it fits tight spaces while keeping dust and debris out. Pre lubricated and ready to drop into wheels, motors, or precision tools. Flanged outer ring for secure mounting Size: 1 4" x 1 2" x 3 16" inch Double metal shields (ZZ) for dirt protection Made