- Joined
- Sep 23, 2010
- Messages
- 280
Thank you Jim, I am thinking you may be right for more than one reason. This machine runs on bushings too, more or less. One babbit on the connecting rod and the other end is brass but it may be a repair. The main shaft has steel bushing. The manual I have calls for a 60 SPM for annealed tool steel, low carbon 100 to 150. The normal SPM listed ( range) for the 6" standard is 100 to 200. We will have to do some more chatting on the motor/speed issue when I get to that point. This is old iron for sure and I see no need to run top speed in my shop. I no longer run top speed either!I think this section is just fine, looks pretty vintage to me
I would set it up to cut about 50 SPM, that will cut just about anything you stuff in it. It's never going to be a production saw so don't worry about how fast you can cut off a piece of material. Most modern 3 phase motors are happy running between 30 and 90 Hz, which should be plenty of range for that saw.
I have run old motors on VFDs with no problems, but the insulation is not really up to the task.
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