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Motorized Goniometer

MGM Series

Holmarc’s goniometers use rolling contact guides with balls rolling on precision curved 'V' grooves for friction less and stick-slip free movements. Pre-loading of the ball guides ensure play less positioning and long term stability. Drive is achieved by a worm and gear mechanism. Graduations are marked on one side of the stage for measurements and repeatable positioning. Construction material of the goniometer is chosen as aluminium alloy for keeping the self weight of the device as minimum as possible. Black anodized finish is given to make the goniometer optics lab compatible.

Holmarc makes goniometers for custom applications as well. Please contact our sales engineers for more details.



    Model :     MGM-65-75
    Travel :     +/- 10º
    Positioning Accuracy :     0.1 degree
    Readout (dial) :     1 degree
    Resolution :     0.00046875 degree (microstep)
    Drive mechanism :     Worm gear and worm shaft
    Gear ratio :     240:1
    Construction :     Aluminium
    Coupling :     Flexible coupling
    Guideway :     Radial 'v' grooved
    Drive :     Stepper motor
    Load capacity :     6 Kg

    Model :     MGM-90-100
    Travel :     +/- 15º
    Pay-Load :     Axial 10 Kg
    Gear Ratio :     180 : 1 (reduction)
    Rotation of top disc / rotation of worm shaft :     2 degree
    Absolute positioning accuracy :     0.1 degree
    Repeatability :     0.06 degree
    Resolution :     0.005 degree (Half step)
  :     0.000625 degree (micro step - 1/16)
    Maximum speed :     8 degree / sec (4 rps)
    Feedback :     Optional (on request)
    Top plate size :     90 mm x 90mm
    Mounting holes :     M6 Tapped holes
    Construction :     Aluminum alloy
    Finish :     Black anodized
    Guide way system :     Radial V grooved ball guide way
    Drive :     Precision worm gear and shaft assembly
    Actuator :     Stepper motor
    Limit switch :     Optical limit switch
    Connector :     Brass connector with junction box





Model No. Travel Central Height Load Capacity Drawing Price ( $ ) Base Plate Model No. Price ( $ )
MGM-35-55 +/- 5º 55 mm 1 Kg   734.00 BP-MGM-35 25.00
MGM-50-63 +/- 7.5º 63 mm 2 Kg   684.00 BP-MGM-63 42.00
MGM-65-75 +/- 10º 75 mm 6 Kg 700.00 BP-MGM75 54.00
MGM 90-100 +/- 15º 100 mm 10 Kg 867.00 BP-MGM-90 59.00

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