I need to replace the motor bearings on my lathe. 5hp 3phase 112M frame size motor.
The triple V groove pulley and integrated brake drum appear to be shrunk fit to the motor shaft. There is a full length key. No Allens or separate hub.
The pulley is about 4.5” OD and the brake drum part is about 8” dia and 1.25” thick.The
rear of the drum part is relieved leaving about 1/2” rim and 1/2” thickness on the relieved part.
I ordered a OTC brake rotor/ drum puller. It only has two arms.
I have been soaking the shaft with Liquid Wrench.
I was planning on applying some tension with the puller and heating the V part of the pulley with Oxy/acetylene.
It may fall right off, but I’m expecting it to be a PITA.
To reinstall I’m torn between boring the pulley a bit and tapping some set screws, and heating the pulley to 450 in my kitchen oven and hopefully dropping it on the shaft. A piece of 1/4” ply with a slot between the end bell and pulley would be about right to stop the pulley from going to far into the shaft.
Any advice other than don’t break it?
Thanks Keith
Sent from my iPhone using Tapatalk Pro
The triple V groove pulley and integrated brake drum appear to be shrunk fit to the motor shaft. There is a full length key. No Allens or separate hub.
The pulley is about 4.5” OD and the brake drum part is about 8” dia and 1.25” thick.The
I ordered a OTC brake rotor/ drum puller. It only has two arms.
I have been soaking the shaft with Liquid Wrench.
I was planning on applying some tension with the puller and heating the V part of the pulley with Oxy/acetylene.
It may fall right off, but I’m expecting it to be a PITA.
To reinstall I’m torn between boring the pulley a bit and tapping some set screws, and heating the pulley to 450 in my kitchen oven and hopefully dropping it on the shaft. A piece of 1/4” ply with a slot between the end bell and pulley would be about right to stop the pulley from going to far into the shaft.
Any advice other than don’t break it?
Thanks Keith
Sent from my iPhone using Tapatalk Pro