6811 Ball Bearing | 6811 Bearing - 55x72x9 2.4375" Finished Bore depending on where the blue

depending on where the blue tree marking paint is used

140A25 sprockets with a stock bore comes with a 1-1/2" inside diameter plain hole and can be easily machine bored to custom sizes

How To Use The #120 Roller Chain Wear Gauge

Sprocket Size: 160BTB17

6811 Ball Bearing | 6811 Bearing - 55x72x9 2.4375" Finished Bore depending on where the blueThis 6811 ball bearing is a high precision premium quality deep groove 55x72x9 ball bearing made to ABEC 3 precision standards from AXIS. What sets this 6811 bearing apart from others is the ABEC 3 precision standard that this bearing is made to, the grade 10 balls used, and the superb electric motor quality rating (EMQ). ABEC 3 means that the bearing itself has a micron deviation from a nominal of 20. 000mm of 8 micrometers. The standard ABEC 1