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Ships within 48 hours · Estimated delivery Aug 26 - Aug 31
NU221 width is 36mm
ID (inner diameter)/Bore: 5 1/2" inch
Load rating Cow: 9
bearings have nylon cage that would make them faster and they are blacked
R4 Full Complement Full Ceramic Bearing 1/4" x 5/8" x 0.196" Si3N4 Inner Diameter - 280mm NU221 width is 36mmR4 Full Ceramic Ball Bearing Silicon Nitride 1 4" x 5 8" x 0. 196" inch R4 Full Ceramic Silicon Nitride Ball Beairng with 14 Si3N4 Ceramic Balls, a standard bearing size commonly used in a variety of industrial and commercial applications that use this size 1 4" x 5 8" x 0. 196" inch. R4 Ball Bearing Full Ceramic Silicon Nitride Ball Beairng Cage: No Cage Closures: Open Material: Full Ceramic Si3N4 (Silicon Nitride) Dimensions: 1 4" x 5 8" x 0. 196"
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