AOM130M Gimbal

Description

Design Features

  • Standard models 152.4 mm through 609.6 mm optic diameters
  • Precise positioning is ensured by sub-arc-second resolution capability
  • Choose from a selection of stepping and servomotors
  • Mounting holes are slotted to accommodate English or metric hole pattern
  • Can be supplied prepared for use in vacuum
  • Custom precision mounting designs are available for centering non-circular payloads on the gimbal

The AOM130M series of gimbal mounts position optical components as large as 600 mm in diameter in both azimuth and elevation. The AOM130M mounts provide outstanding stability and sub-arc-second resolution for use in optics and laser experimentation in research or industrial laboratory settings.

Precision Bearings Ensure Accuracy

The AOM130M's precision gimbal pivot ball bearings minimize backlash and reduce stiction. The mirror cell and azimuth bearing systems utilize high-quality preloaded angular contact bearings that permit fully-loaded operation in any orientation, including upside-down.

Excellent Positioning Capability

The AOM130M mounts possess desirable positioning characteristics including 0.75 arc sec unidirectional repeatability, negligible backlash and hysteresis that is typically better than 5 arc sec. The mechanical and thermal stabilities of the AOM130M series are excellent. The rigid castings employed help push resonant frequencies beyond 200 Hz, and thermal stability is better than 2 µrad/°C.

Highly Accurate Limits and Homing System

All AOM130M mounts are equipped with high accuracy limit switches. Combining the output of these switches and the motor's marker signal, Aerotech's motion controllers can position the AOM130M mounts to highly accurate home reference points, typically to within 0.001°.

Standard Sizes to 600 mm

AOM130M series motor-driven gimbal mounts are available in six standard sizes that accommodate 152.4, 228.6, 304.8, 406.4, 508.0 and 609.6 mm diameter optical components. In addition, adapters for 127.0, 203.2 and 254.0 mm diameter optics are available as accessories, providing mounting capability for virtually all standard optic elements between 127.0 and 609.6 mm in diameter.

Full 360° AZ and EL Positioning

High resolution positioning in the range of ±4° is achieved under motor control. Rotational freedom is further extended to a full 360 degrees by unclamping the mirror cell and/or azimuth assembly (a tool is included), manually rotating each axis anywhere in a 360° range, and then reclamping. Neither of the manual adjustments disturbs the precision motorized drive assembly.

Wide Range of Resolutions and Drive Choices

Depending upon the motor selected (microstepping or servo) and the controller resolution setting, resolution to 0.008 arc second is achievable with the AOM130M. Some commonly specified resolutions and corresponding mount resolutions are listed in the specifications table. For mount resolutions other than those listed in the specifications table, please contact us.

A home marker encoder and positioning knob are options for microstepping versions. The DC servomotor is equipped with a rotary encoder with marker-to-enable closed-loop positioning feedback.

Specifications

AOM130M Specifications

ModelAOM130M-6AOM130M-9AOM130M-12
Resolution(1) @ 4000 Steps/Rev 0.06 µrad (0.013 arc sec) 0.04 µrad (0.009 arc sec)
@ 1000 Steps/Rev 0.24 µrad (0.050 arc sec) 0.18 µrad (0.037 arc sec)
Clear Aperture 144.27 mm 218.95 mm 292.1 mm
Range(2) (Mechanical) 360° AZ/EL
Range (Motor-Driven) ±4° AZ/EL
Unidirectional Repeatability 3.64 µrad (0.75 arc sec)
Component Diameter (Max) 152.4 mm 228.6 mm 304.8 mm
Component Thickness (Max) 26.92 mm 41.4 mm 53.85 mm
Component Weight (Max) 4.4 kg 15 kg 35 kg
Maximum Slew Rate(3) 8.3°/min 6.2°/min
Mount Weight Using Brushless Motors 12.2 kg 20.2 kg 24.7 kg
Vacuum Capability (Optional) 10-3 or 10-6 mbar
Material Aluminum
Finish Black Epoxy Paint
  1. Mount resolution depends upon controller resolution setting. Consult Controllers section for how to specify resolution.
  2. Clamp screw release required for 360° rotational freedom.
  3. Maximum motor speed is 600 rpm.

Specifications

ModelAOM130M-16AOM130M-20AOM130M-24
Resolution(1) @ 4000 Steps/Rev 0.04 µrad (0.009 arc sec) 0.04 µrad (0.009 arc sec)
@ 1000 Steps/Rev 0.18 µrad (0.037 arc sec) 0.16 µrad (0.032 arc sec)
Clear Aperture 393.7 mm 488.95 mm 590.55 mm
Range(2) (Mechanical) 360° AZ/EL
Range (Motor-Driven) ±4° AZ/EL
Unidirectional Repeatability 3.64 µrad (0.75 arc sec)
Component Diameter (Max) 406.4 mm 508.0 mm 609.6 mm
Component Thickness (Max) 63.5 mm 88.9 mm 101.6 mm
Component Weight (Max) 73 kg 114 kg 264 kg
Maximum Slew Rate(3) 5.2°/min
Mount Weight Using Brushless Motors 32.9 kg 67 kg 79.7 kg
Vacuum Capability (Optional) 10-3 or 10-6 mbar
Material Aluminum
Finish Black Epoxy Paint
  1. Mount resolution depends upon controller resolution setting. Consult Controllers section for how to specify resolution.
  2. Clamp screw release required for 360° rotational freedom.
  3. Maximum motor speed is 600 rpm

Dimensions

  • AOM130M

Ordering Information

Ordering Example

AOM130M -9 -BMS -NC -9DU - -

Ordering Options

Series Optic Diameter (in)Motor OptionsLimitsLimit WiringOptions Accessories
AOM130M -6
-9
-12
-16
-20
-24
-NM
-BMS
-SM
-NC
-NO
-9DU
-FLY
-VAC3
-VAC6
-AOM6T5
-AOM9T8
-AOM12T10
  1. Servomotors require encoder (resolution) option.
  2. Resolutions 11, 41 and 42 specify line driver-type encoders; option 42 includes Hall effect sensors.

AOM130M Series Optical Mount

Option Description
AOM130M-6 Motorized gimbal mount for 6 in (152.4 mm) diameter optic
AOM130M-9 Motorized gimbal mount for 9 in (228.6 mm) diameter optic
AOM130M-12 Motorized gimbal mount for 12 in (304.8 mm) diameter optic
AOM130M-16 Motorized gimbal mount for 16 in (406.4 mm) diameter optic
AOM130M-20 Motorized gimbal mount for 20 in (508.0 mm) diameter optic
AOM130M-24 Motorized gimbal mount for 24 in (609.6 mm) diameter optic

Motor Options

Option Description
-NM No motor or encoder
-BMS Two brushless servomotors with connectors and 1000-line encoder (BMS60-A-D25-E1000H); motor power and feedback cable required
-SM Two stepping motors with connector and home marker pulse (50 SMB2-HM); motor power cable required

Limits

Option Description
-NC Normally closed
-NO Normally open

Limit Wiring

Option Description
-9DU 9-pin D (BMS standard, or NM)
-FLY Flying leads (SM or NM)

Options

Option Description
VAC3 Vacuum preparation for use to 10-3
VAC6 Vacuum preparation for use to 10-6

Accessories

Option Description
AOM6T5 Adapter for 5 in (127.0 mm) diameter optic
AOM9T8 Adapter for 8 in (203.2 mm) diameter optic
AOM12T10 Adapter for 10 in (254.0 mm) diameter optic