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  1. #16
    BobL is offline Member: Blue and white apron brigade
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    Quote Originally Posted by SurfinNev View Post
    Thinking about this motor - https://www.colliermiller.com.au/pro...400rpm-approx) - and get a Powtran VFD. Good choice? Now which VFD to buy is the next question. How about the PI160 2R2G1Z. The above motors are the same size and flange on the Hercus Mill so would like to use it there as well (when I get it back together) if possible.
    Watch out, that motor is only 1/2 HP and I reckon it would be too small for a cold saw.

  2. #17
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    I know, but that is the biggest motor you can get to mount to a B5 flange the size I have on the gearbox. Maybe a custom flange to suit a 1HP? Have to look into that. Anyone know just what torque I would need to drive the cold saw blade?
    Nev.

  3. #18
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    Looks like a bigger motor with a reducing flange may be available to order so I will look into that. Shaft size will be either 19mm or 24mm depending on size of motor so that will need to be modified to suit the gear. Motor frame size of flange on gearbox is 71. Next sizes up in motors are 80 an 90.
    Nev.

  4. #19
    BobL is offline Member: Blue and white apron brigade
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    Quote Originally Posted by SurfinNev View Post
    I know, but that is the biggest motor you can get to mount to a B5 flange the size I have on the gearbox. Maybe a custom flange to suit a 1HP? Have to look into that. Anyone know just what torque I would need to drive the cold saw blade?
    If you intend using a 400 mm blade you will need a 3HP motor. A 3HP motor doing 2800 rpm is developing 5.6 ft lbs of torque, at 1400 rpm its double that.

  5. #20
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    You might find the specs in this Brobo cold saw manual useful:https://s3-ap-southeast-2.amazonaws....ovember+17.pdf
    Looks like their biggest motor is 1.7kW (~2.2HP)

    Steve

  6. #21
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    Quote Originally Posted by OxxAndBert View Post
    You might find the specs in this Brobo cold saw manual useful:https://s3-ap-southeast-2.amazonaws....ovember+17.pdf
    Looks like their biggest motor is 1.7kW (~2.2HP)

    Steve
    Thanks for the link. Will study that later.
    Nev.

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