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Would this be a good upgrade motor??
- Thread starter Mram10
- Start date
- Replies 7
- Views 1,405
mksj
Hot Rolled
- Joined
- Aug 10, 2010
- Location
- San Diego, CA
The biggest limitation you will find is the limited size of the motor area, I assume their is their Eissen 1236 lathe where the motor mounts behind the headstock. The current motor looks to be a 145 frame, doesn't look like an OEM motor which is metric. I would recommend the Marathon E-467 which is a 2 Hp inverter rated TENV type motor, it has a very small size and has been used as a replacement for 1236/1340 sized lathes of this model. Most TEFC motors will probably be too big because of the length of the fan housing. You can get the motor dimensions online and verify fitment. You would use a 2 Hp VFD, you will need an external braking resistor.
mksj
Hot Rolled
- Joined
- Aug 10, 2010
- Location
- San Diego, CA
Not exactly what I would consider an industrial or heavy duty motor, no real specifications or online information, and the picture does not show the whole motor. Going to 3 phase will give you an improvement in surface finish and going up to 2Hp will be better. If you go through all the effort and cost, it may be worthwhile to invest in a better motor, but yes the StairMaster 2Hp would be an improvement. The Marathon E-467 or the BlackMax Y551 I feel are a better upgrade.
Jraef
Titanium
- Joined
- Aug 10, 2004
- Location
- San Francisco Bay Area
No HP rating that I could see, but the FLA rating at 220/230V makes it a 1-1/2HP motor, so I don't see an upgrade issue. If you don't have 3 phase available already, you will need a VFD to operate this and that may be an "upgrade" in terms of having the speed control, but if that motor was never designed to be run from an inverter drive, it may have long run issues.
mksj
Hot Rolled
- Joined
- Aug 10, 2010
- Location
- San Diego, CA
Marathon E467 2Hp motor motor plate, it has a FLA of 6.0A. I have installed quite a few of these, Y551 and Baldor IDNM series Inverter/Vector motors on the 1340 lathes, the Baldor IDNM3587 2 Hp motor has a FLA of 5.4A. I typically run the Y551/IDNM motors to 160-180% overload for up to 1 minute and use a frequency range of 20-120Hz which requires a motor pulley diameter reduction. The speed stability is typically +/- 1 RPM, stock motors are usually +/- 5 RPM. You want an enclosed motor frame to prevent chips from getting into the motor. You can pick up these motors surplus at significant savings, so worth watching for an inverter rated motor at some of the auction sites/industrial recyclers.
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