unbalance in magnetic lathe chuck - Page 2
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  1. #21
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    Quote Originally Posted by Ray Behner View Post
    Keep us posted. With pics if possible?
    I will.
    Pictures I will make later.
    I've tried to balance it by mounting it between centers on my lathe, but the two centers inflict too much friction on the plate to have it turn completely free.
    Next, i will try to measure both sides on two digital scales so i can read the missing weight on one side. Suspend it from 2 thin wires is also an option.

    Quote Originally Posted by Conrad Hoffman View Post
    Are you sure this thing was intended for lathe use? Seems like an accident waiting to happen. Better than double-stick tape though.
    Well, sure.... never.
    But it was mounted on a camlock D1-4 plate (used on a well known Dutch make of lathes), it is round, it is operated by a square key like a jaw chuck. I never doubted it was intended for a lathe. Perhaps it was not intended to be spun over 400 RPM....

  2. #22
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    Quote Originally Posted by michiel View Post
    I will.
    Pictures I will make later.
    I've tried to balance it by mounting it between centers on my lathe, but the two centers inflict too much friction on the plate to have it turn completely free.
    Next, i will try to measure both sides on two digital scales so i can read the missing weight on one side. Suspend it from 2 thin wires is also an option.


    Well, sure.... never.
    But it was mounted on a camlock D1-4 plate (used on a well known Dutch make of lathes), it is round, it is operated by a square key like a jaw chuck. I never doubted it was intended for a lathe. Perhaps it was not intended to be spun over 400 RPM....
    Keep in mind that several well known lathe makers and a few specialist companies made/make grinding attachments for metal lathes. Magnetic chucks are a very commonly used fixture for grinding, whether rotary or linear. I have several Schaublin 102 and Hardinge belt-drive grinding attachments plus some of the electric motor-driven tool post grinders by Themac and Dumore. The grinding wheels rotate at high speed, but the work usually travels rather slowly.

    Larry


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