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GM-12E Gimbal Mount





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Newmark’s high precision GM-12E Gimbal Mount is designed for high accuracy pointing, scanning and tracking applications for large optics, antennas and other sensors.

The GM-12E is also suitable as a motion simulator for ships and aircraft.
GM-12E Angular Encoder Our large 2 axis and 3 axis gimbal mounts are equipped with high performance rotary stages and offer excellent stiffness and load capacity making them suitable for a wide variety of applications. The GM-12E is equipped with direct-read high resolution optical angular encoders mounted to the rotating output spindle. This improves the bi-directional repeatability over the standard GM-12.

The GM-12E uses high torque NEMA 23 stepper motors coupled to precision preloaded worm gears providing backlash free positioning. Optical limit and home switches are standard items. The angular encoders provide a reference mark with a repeatability of +/- 1 encoder count.

The GM-12E is offered with a choice of a mirror cell for 12″ (300 mm) diameter optics or a flat payload mounting plate. The payload mounting plate is available with 1/4-20 or M6 threads.

The rear of the GM-12E has connectors for a clean and reliable connection.

Ordering

GM-12E gimbal with high resolution angular encoder

Typical lead-time: 4 Weeks

$15,500.00

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Part Number: GM-12E

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Specifications

Resolution
0.79 arc-sec
Accuracy
+/- 25 arc-sec
Max. Speed
20°/sec
Repeatability
2 arc-sec
Max. Output Torque
10.2 Nm (90 lb-in)
Max Payload Weight
23 kg (50 lbs)
Travel Range
Azimuth: ± 90° , Elevation: ±90° , Other travel ranges are available
Operating Temperature
0°C to 40°C
Encoder
High resolution optical ring encoder mounted to the output spindle direct angular reading
Limit Switches
Optical end of travel limit switches on both axes
Origin
Optical home switch located in the middle of travel.
Magnetic reference mark on encoder
Gear Ratio
72:1
Stage Weight
15.8 kg (35 lbs)
Material
Aluminum Alloy Construction
Finish
Black Anodize

Dimensions

GM-12E with Mirror Cell
GM-12E with Mirror CellClick to Enlarge

GM-12E with Payload Mounting Plate
GM-12E with Payload Mounting PlateClick to Enlarge

GM-12E without Payload Mounting Plate
GM-12E without Payload Mounting PlateClick to Enlarge

Motor Options

size-23-stepper-motor

Size 23 Stepper Motor

  • NEMA 23 high torque stepper motor
  • 2.8 Amp/Phase
  • 0.9 Ohm/Phase
  • 2.5 mH/Phase
  • 1.8 degrees/step
  • Compatible with the following motion controllers:
    NSC-A1 Series | NSC-G Series