Description

Design Features

Low profile and compact with aperture
Precision worm-gear drive
DC servo or stepper motor
Continuous 360 degree rotary positioning
Graduated tabletop
High vacuum capable
Optional lens mount adapter
Compact multi-axis configurations with linear and other MPS series stages

The MPS50GR and MPS75GR rotary stages provide accurate positioning performance in a low profile and compact footprint. They are perfect for the confines and requirements of the laboratory and are also applicable for use in manufacturing environments. MPS-GR stages are ideal for optics, measurement, alignment and other demanding applications.

Construction Features

The MPS-GR stages incorporate a precision worm-gear drive mechanism and bearing components for highly accurate positioning performance over the lifetime of the product. They are available with DC servo or stepper motors. The DC servomotors for both stages are equipped with a square-wave rotary encoder. The MPS50GR has a 20 mm aperture and the MPS75GR has a 30 mm aperture. The MPS75GR includes a manual adjustment knob.

Vacuum and Mounting Options

Both stages are available with optional vacuum preparation to 10^-6 torr including a vacuum-rated connector. An optional breadboard mounting plate provides direct mounting to both English and metric breadboards. Also available is an aperture Lens Mount Option (LMO) for easy mounting of standard lenses over the stage aperture.

The MPS50GR and MPS75GR are members of the MPS (Miniature Positioning Stage) family of linear, rotary, goniometer and vertical lift stages. Two or more stages can easily be mounted together in numerous combinations using standardized mounting patterns with adapter plates and brackets.

Specifications

Mechanical Specifications

Model		MPS50GR	MPS75GR
Travel		360° Continuous
Accuracy	Uncalibrated	250 arc sec	200 arc sec
Accuracy	Calibrated	80 arc sec
Resolution (Minimum Incremental Motion)	DC Servomotor (-M1)	2 arc sec	1 arc sec
Resolution (Minimum Incremental Motion)	Stepper Motor (-M2)	2 arc sec	1 arc sec
Repeatability (Unidirectional)⁽¹⁾	DC Servomotor (-M1)	8 arc sec	6 arc sec
Repeatability (Unidirectional)⁽¹⁾	Stepper Motor (-M2)	20 arc sec	10 arc sec
Tilt Error Motion		40 arc sec
Worm Gear Ratio		80:1	100:1
Maximum Speed	DC Servomotor (-M1)	23 deg/s	180 deg/s
Maximum Speed	Stepper Motor (-M2)	4.5 deg/s	100 deg/s
Aperture		20 mm	30 mm
Maximum Torque (Continuous)		0.4 N·m	0.6 N·m
Load Capacity⁽²⁾	Axial	4 kg	12 kg
	Radial	1 kg	5 kg
	Moment	0.25 N·m	1.5 N·m
Rotor Inertia (Unloaded)		0.000031 kg·m²	0.000141 kg·m²
Stage Mass		0.8 kg	1.7 kg
Material		Anodized Aluminum Body

With Aerotech controllers.
Payload specifications are single-axis system.
Excessive duty cycle may impact stage accuracy.
Specifications are for single-axis systems measured 25 mm above the tabletop. Performance of multi-axis systems is payload and workpoint dependent. Consult factory for multi-axis or non-standard applications.

Electrical Specifications

Model	MPS50GR DC Servomotor (-M1)	MPS50GR Stepper Motor (-M2)	MPS75GR DC Servomotor (-M1)	MPS75GR Stepper Motor (-M2)
Drive System	DC Brush Servomotor with 14:1 Gearbox	24 VDC Bipolar Stepper Motor with 43:1 Gearbox	DC Brush Servomotor	24 VDC Bipolar Stepper Motor
Feedback	512 lines/rev Rotary Encoder	N/A	10,000 lines/rev Rotary Encoder	N/A
Electronic Resolution	0.565 arc sec (0.000157°)	0.785 arc sec (0.000218°) @ 480 steps/rev motor resolution	0.324 arc sec (0.00009°)	0.324 arc sec (0.00009°) @ 40000 steps/rev motor resolution
Maximum Bus Voltage	48 VDC	48 VDC*	48 VDC	48 VDC*
Home Marker	Optical Switch

*With Aerotech control system.

Recommended Controller

Model		MPS50GR DC Servomotor (-M1)
Multi-Axis	A3200	Npaq/Npaq MR/Ndrive MP
Multi-Axis	Ensemble	Ensemble LAB/Epaq/Epaq MR/Ensemble MP
Single Axis	Soloist	Soloist MP

MPS-GR Load and Torque Graphs

Ordering Information

MPS-GR Series Miniature Gear-Driven Rotary Stage

Option	Description
MPS50GR	MPS50GR miniature gear-driven rotary stage with 20 mm aperture
MPS75GR	MPS75GR miniature gear-driven rotary stage with 30 mm aperture

Vacuum Preparation (Optional)

Option	Description
-HV	High vacuum preparation to 10^-6 torr

Motor (Required)

Option	Description
-M1	DC servomotor
-M2	Stepper motor

Mounting Plate (Optional)

Option	Description
-MP	Optical table mounting plate

Lens Mount (Optional)

Option	Description
-LMO	Aperture lens mount

Metrology (Required)

Option	Description
-PL0	No metrology performance plots
-PL1	Metrology, uncalibrated with performance plots
-PL2	Metrology, calibrated (HALAR) with performance plots

Integration (Required)

Aerotech offers both standard and custom integration services to help you get your system fully operational as quickly as possible. The following standard integration options are available for this system. Please consult Aerotech if you are unsure what level of integration is required, or if you desire custom integration support with your system.

Option	Description
-TAS	Integration - Test as system Testing, integration, and documentation of a group of components as a complete system that will be used together (ex: drive, controller, and stage). This includes parameter file generation, system tuning, and documentation of the system configuration.
-TAC	Integration - Test as components Testing and integration of individual items as discrete components that ship together. This is typically used for spare parts, replacement parts, or items that will not be used together. These components may or may not be part of a larger system.