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added front plate embossed part number
Line 97: Line 97:  
[https://www.mcmaster.com/9262K736/ Oil-Resistant Buna-N O-Ring, 2.5 mm Wide, 47 mm ID | McMaster-Carr]
 
[https://www.mcmaster.com/9262K736/ Oil-Resistant Buna-N O-Ring, 2.5 mm Wide, 47 mm ID | McMaster-Carr]
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The bearing is pressed into the front face plate on the motor. This plate has an O-ring to seal a boss into a mating bore with a ~110.5mm final ID tapered step-down. That boss has a 108.5mm outer diameter, and the O-ring is ~2mm thick. The following might be suitable replacements:
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The bearing is pressed into the front face plate on the motor, a casting embossed C-64180-4 and with C-64135 written in permanent marker (for the bearing?). This plate has an O-ring to seal a boss into a mating bore with a ~110.5mm final ID tapered step-down. That boss has a 108.5mm outer diameter, and the O-ring is ~2mm thick. The following might be suitable replacements:
    
[https://www.mcmaster.com/9262K874/ Oil-Resistant Buna-N O-Ring, 2 mm Wide, 109 mm ID | McMaster-Carr]
 
[https://www.mcmaster.com/9262K874/ Oil-Resistant Buna-N O-Ring, 2 mm Wide, 109 mm ID | McMaster-Carr]

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