2BK50H Pulley double-groove 4.75" OD Bushing Size What sets this 6016-2RS bearing

What sets this 6016-2RS bearing apart from others is the ABEC 3 precision standard that this bearing is made to

Part #: UCFT 55

140Q11H sprockets are bored to accept a Q1 type taper bushing

Sprocket Size: 120BS20H

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2BK50H Pulley double-groove 4.75" OD Bushing Size What sets this 6016-2RS bearingThis two groove 2BK50H Pulley uses an H Series Bushing, is directly interchangeable with other manufacturers, is 4. 75" in diameter, and is manufactured in accordance with ARPM Standard IP20 for safe operation. With AK series pulleys you can use A, 4L, B, 5L, AX, BX, AA, BB, and banded belts. What separates this 2BK50H pulley from the others is that it is made using a high grade 35 cast iron, is phosphate coated, painted, and balanced at the factory.