Description

Design Features

Nanometer performance in a large travel format (25 and 50 mm)
High resolution (2 nm), repeatability (75 nm) and accuracy (300 nm)
In-position stability of <2 nm
Anti-creep crossed-roller bearings
High dynamic performance

Introduction

The ANT95LZ crossed-roller stages are the best-in-class in combining speed, accuracy, resolution, repeatability, reliability and size, and are offered in two accuracy grades.

Noncontact Direct-Drive

Only noncontact direct-drive technology offers the robust, accurate and high-speed positioning necessary for mass production of precision devices. ANT95LZ stages utilize advanced direct-drive technology pioneered by Aerotech to achieve the highest level of positioning performance for high-precision positioning, disk-drive fabrication, fiber alignment, optical delay element actuation, sensor testing and scanning processes that demand smooth and precise motion.

The ANT95LZ stages use a nearly frictionless counterbalance mechanism to maintain performance levels while minimizing motor heating. The counterbalance is user-adjustable from 0 to 5 kg.

Flexible System Design

The ANT95LZ family has universal mounting and tabletop patterns that allow for easy system integration. Two, three or more axes can be combined easily for flexible system designs and multi-axis configurations.

System Characteristics

Outstanding accuracy, position repeatability and in-position stability require high system resolution. The ANT95LZ stage’s industry-leading 2 nm minimum incremental step size provides this high level of performance. Excellent in-position stability is assisted by high-quality, anti-creep, crossed-roller bearings. The stage offers virtually maintenance-free operation over the life of the product. Aerotech’s direct-drive technology has no hysteresis or backlash, enabling accurate and repeatable nanometer-scale motion.

Specifications

Mechanical Specifications

Model		ANT95LZ-025	ANT95LZ-050
Travel		25 mm	50 mm
Accuracy⁽¹⁾	Basic	±4.0 µm	±4.0 µm
Accuracy⁽¹⁾	PLUS	±300 nm	±300 nm
Resolution (Minimum Incremental Motion)		2 nm	2 nm
Bidirectional Repeatability⁽¹⁾	Basic	±100 nm	±100 nm
Bidirectional Repeatability⁽¹⁾	PLUS	±75 nm	±75 nm
Unidirectional Repeatability		±50 nm	±50 nm
Straightness⁽¹⁾		±2.25 µm	±3.0 µm
Flatness⁽¹⁾		±3.5 µm	±4.0 µm
Pitch		10 arc sec	10 arc sec
Roll		10 arc sec	10 arc sec
Yaw		5 arc sec	5 arc sec
Maximum Speed		200 mm/s	200 mm/s
Maximum Acceleration		1 g (No Load)	1 g (No Load)
In-Position Stability⁽²⁾		<2 nm	<2 nm
Maximum Force (Continuous)		7.75 N	9.5 N
Load Capacity⁽³⁾	Vertical	5.0 kg	5.0 kg
Moving Mass		0.46 kg	0.52 kg
Stage Mass		1.9 kg	2.5 kg
Material		Aluminum Body/Black Hardcoat Finish
MTBF (Mean Time Between Failure)		30,000 Hours

Certified with each stage.
In-Position Jitter listing is 3 sigma value.
Axis orientation for on-axis loading is listed.
Air supply must be clean, dry to 0°F dewpoint and filtered to 0.25 µm or better; recommend nitrogen at 99.9% purity. Supply pressure is determined by the amount of payload carried by the stage.

• Specifications are for single-axis systems measured 25 mm above the tabletop. Performance of combined multi-axis systems is payload and workpoint dependent. Consult factory for multi-axis or non-standard applications.
• -PLUS requires the use of an Aerotech controller.

Electrical Specifications

Drive System	Brushless Linear Servomotor
Feedback	Noncontact Linear Encoder
Maximum Bus Voltage	±40 VDC
Limit Switches	5 V, Normally Closed
Home Switch	Near Center

Recommended Controllers

Multi-Axis	A3200	Npaq MXR Npaq MR-MXH Ndrive ML-MXH
Multi-Axis	Ensemble	Epaq MXH Epaq MR-MXH Ensemble ML-MXH
Single Axis	Soloist	Soloist ML-MXH

Linear amplifiers are required to achieve the listed specifications. Other options are available.

Note: 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 for more information.

ANT95LZ Step Plot
ANT95LZ Performance Graphs

Ordering Information

ANT95LZ Single-Axis Z Direct-Drive Nanopositioning Stage

Travel (Required)

Option	Description
-025	25 mm travel
-050	50 mm travel

Cable Orientation (Required)

Option	Description
-CBL1	Right-hand cable exit
-CBL2	Left-hand cable exit

Performance Grade (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.