ANT20G Single-Axis Direct-Drive Goniometer

Our ANT20G goniometers are designed for high-speed, ultra-precise positioning applications such as the angular alignment of components. This unique design utilizes our best-in-class direct-drive noncontact motor technology and provides an industry-leading positioning speed of up to 150 degrees per second.

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Description

Specifications

Dimensions

Ordering Info

Downloads

Description

Specifications

Dimensions

Ordering Info

Downloads

Description

Design Features

Noncontact, non-cogging, frictionless direct-drive for zero backlash or hysteresis
High speed (150 degrees/s)
High resolution (0.05 arc sec)
Excellent in-position stability
Large 20 degree rotation angle
Orthogonal mounting of two cradles provides rotation about the same point
No maintenance
Compact design

High-precision bearings, direct on-axis encoder feedback and noncontact and non-cogging direct-drive technology ensure the highest level of performance and make excellent repeatability and in-position stability a reality. The goniometer cradles can be mounted orthogonally to provide pitch and roll about the same point in space. Combining this with a rotary stage under the orthogonal assembly adds a third rotation axis (pitch, roll, yaw) through the same point.

The critical elements of the ANT20G goniometers, as with all other ANT series nanopositioners, were selected to operate in a 24/7 manufacturing environment. Unlike worm- or piezo-driven goniometers, the ANT20G series will not require periodic adjustment or maintenance. This will ensure many years of trouble-free operation. The ANT20G cradles are available in four sizes.

ANT20G Specifications

	ANT20G-050	ANT20G-090	ANT20G-110	ANT20G-160
Rotation Angle	20°
Accuracy - Base Performance (-PL1)(1)	±90 µrad (±18 arc sec)	±50 µrad (±10 arc sec)	±40 µrad (±8 arc sec)	±30 µrad (±6 arc sec)
Accuracy - PLUS Performance (-PL2)(1)	±30 µrad (±6 arc sec)	±20 µrad (±4 arc sec)
Resolution (Minimum Incremental Motion)	0.45 µrad (0.09 arc sec)	0.25 µrad (0.05 arc sec)	0.20 µrad (0.04 arc sec)	0.15 µrad (0.03 arc sec)
Bidirectional Repeatability(1)	±18 µrad (±4 arc sec)	±10 µrad (±2 arc sec)
Unidirectional Repeatability	±5 µrad (±1 arc sec)
Tilt Error Motion	±90 µrad (±18 arc sec)	±50 µrad (±10 arc sec)	±40 µrad (±8 arc sec)	±30 µrad (±6 arc sec)
Maximum Speed	150 degrees per second
Maximum Acceleration	1200 rad/s2	500 rad/s2	375 rad/s2	250 rad/s2
Settling Time	See graph for typical performance
In-Position Stability(2)	±0.1 µrad (±0.02 arc sec)	±0.5 µrad (±0.01 arc sec)		±0.05 µrad (±0.01 arc sec)
Nominal Radius of Rotation	50 mm	90 mm	110 mm	160 mm
Height from Tabletop to Rotation Point	19.1 mm	57.5 mm	76.2 mm	120.4 mm
Maximum Torque (Continuous)	0.40 N-m	0.85 N-m	1.00 N-m	2.40 N-m
Load Capacity-Axial	1.5 kg	2.0 kg		3.5 kg
Load Capacity-Moment	60 kg•mm	80 kg•mm		140 kg•mm
Stage Mass	0.68 kg	1.23 kg	1.33 kg	1.73 kg
Material	Aluminum
MTBF (Mean Time Between Failure)	30,000 Hours

Notes:

Certified with each stage.
In-Position Jitter listing is 3 sigma value.
Specifications are per axis, measured at the rotation point. Performance of multi-axis systems is payload and workpoint dependent. Consult factory for multi-axis or non-standard applications.
To ensure the achievement and repeatability of specifications over an extended period of time, environmental temperature must be controlled to within 0.25ºC/24 hours. If this is not possible, alternate products are available. Please consult Aerotech Application Engineering for more information.

ANT20G Electrical Specifications

	ANT20G-050	ANT20G-090	ANT20G-110	ANT20G-160
Drive System	Slotless, Brushless, Direct Drive
Feedback	Noncontact Encoder
Maximum Bus Voltage	±40 VDC
Limit Switches	5 V, Normally Closed
Home Switch	Near Center

Dimensions

ANT20G-050

ANT20G-090

ANT20G-110

ANT20G-160

Ordering Information

Radius of Rotation (Required)

Option	Description
-050	50 mm radius of rotation
-090	90 mm radius of rotation
-110	110 mm radius of rotation
-160	160 mm radius of rotation

Metrology (Required)

Option	Description
-PL1	Base performance
-PL2	High-accuracy performance, PLUS

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.

Accessories (to be ordered as separate line item)

Option	Description
ALIGN-PA10	XY assembly; 10 arc sec orthogonality
ALIGN-PA5	XY assembly; 5 arc sec orthogonality

ANT20G Data Sheet ANT20G Hardware Manual ANT20G CAD Download Multi-Axis Photonics Alignment Solutions Sheet

Consultation

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ANT20G Single-Axis Direct-Drive Goniometer

Description

Design Features

ANT20G Specifications

ANT20G Electrical Specifications

Dimensions

Ordering Information

Radius of Rotation (Required)

Metrology (Required)

Integration (Required)

Accessories (to be ordered as separate line item)

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