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GM-12R 3 Axis Gimbal Mount





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Newmark’s high precision 3 axis motorized gimbal system is designed for general purpose pointing, scanning and tracking applications for large optics, antennae and other sensors.

Our large 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-12R uses high torque NEMA 23 stepper or servo motors coupled to precision preloaded worm gears providing high resolution positioning. Optical limit and home switches are standard items.  The rear of the GM-12R has connectors for a clean and reliable connection.

The GM-12R is available in a low temperature (-40°C) variation.

A slip ring version is available for applications requiring 360° rotation in the azimuth and elevation axis.

Need something specific? Contact us to discuss a custom gimbal solution.

Ordering

GM-12 Part Number Configuration
Select Motor and Slip Ring Options

Typical lead-time: 6 Weeks
Clear
Qty
Part Number: N/A

Specifications

Resolution
0.36 arc-sec (stepper motor), 4.5 arc-sec (servo motor)
Accuracy
72 arc-sec
Max. Speed
20°/sec (stepper motor), 100°/sec (servo motor)
Repeatability (uni-directional)
5 arc-sec (uni-directional), 40 arc-sec (bi-directional)
Max. Output Torque
10.2 Nm (90 lb-in)
Max Payload Weight
23 kg (50 lbs):  The net center of mass for the payload and the roll stage must be under 10 Nm.
Travel Range
Azimuth: ±90°
Elevation: ±90°
Roll: ±90°
Minimum travel: ±45°, Maximum travel: ±135°
Consult factory for other travel ranges
Encoder
Optical rotary encoder mounted to rear of motor, 4000 CPR with Index
(Optional on stepper motor)
Limit Switches
Optical end of travel limit switches on both axes
Origin
Optical home switch located in the middle of travel.
Gear Ratio
72:1
Stage Weight
21.7 kg (48 lbs)
Material
Aluminum Alloy Construction
Finish
Black Anodize

Dimensions

GM-12R-1 with Stepper Motor
GM-12R-1 with Stepper MotorClick to Enlarge

GM-12R-2 with Stepper + 4000CPR Encoder
GM-12R-2 with Stepper + 4000CPR EncoderClick to Enlarge

GM-12R-3 Brushless Servo
GM-12R-3 Brushless ServoClick 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

Nema 23 Brushless Servo Motor

Size 23 Brushless DC Servo Motor

  • NEMA 23 brushless DC servo motor
  • 4000 Count/rev optical rotary encoder with index mark
  • Continuous Torque: 0.81 Nm (116 oz-in)
  • Compatible with the following motion controller:
    NSC-G Series | NSC-3311 Series

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