ABL1500WB-B Air-Bearing Direct-Drive Linear Stage


Design Features

  • Integral bellows protect the drive and bearing system from contamination
  • Wide base for large offset loads
  • Powerful dual linear motor drive
  • Designed for high-performance scanning and inspection
  • Air-on-air preload on all air-bearing surfaces
  • Linear encoder feedback provides nanometer-level resolution
  • High stiffness for heavy loads and excellent geometric performance
  • Four models with travels from 200 mm to 500 mm

The ABL1500WB-B is a wide-base, environmentally protected version of the ABL1500 series air-bearing stage. The wider base makes the ABL1500WB-B ideally suited for applications with large offset loads and it is ideal as the lower axis in XY stage systems with large travel. The ABL1500WB-B incorporates dual linear motors, effectively doubling the force output of a standard ABL1500 stage.

Leading-edge industries demand positioning tolerances beyond the capability of conventional ball-screw and mechanical-bearing positioning systems. The ABL1500WB-B, with its integral bellows, exceptionally high stiffness and excellent geometric characteristics, was designed specifically to meet those demands.

Air-Bearing Design for High Dynamic Performance

The ABL1500WB-B incorporates an air-on-air preload on both the vertical and horizontal surfaces. The opposing thin-film pressure maintains the bearing nominal gap tolerance. This design, in addition to the large air-bearing surface that distributes the load over a large surface area, results in a stage with outstanding stiffness that is ideal for heavy or offset loading.

Aerotech's proprietary manufacturing techniques result in a stage with unsurpassed geometric characteristics, which maximize performance by yielding superior pitch, roll, yaw, straightness and flatness specifications.

Linear Motor Drive

The driving force behind this stage is Aerotech’s BLMC series brushless linear servomotor. The BLMC utilizes an ironless forcer, which means there is zero cogging and no attractive forces, resulting in unsurpassed smoothness of motion.

Zero Maintenance

Our totally noncontact air bearing, noncontact linear motor drive and noncontact feedback device ensure years of maintenance-free operation at the high performance levels expected of Aerotech equipment. Because there is no mechanical contact between moving elements, the ABL1500WB-B experiences no wear or reduction in performance over time. Service life is virtually unlimited and because there is no lubrication – only clean, dry gas – air bearings are ideal for clean room and medical applications.

Cable Management System (CMS)

We carefully optimize the cable bend radius to ensure years of trouble-free operation. In the unlikely event of failure, Aerotech's modular design makes cable replacement quick and easy with minimal downtime.

We include all customer-required cables, air hoses, etc. in our CMS bundle to facilitate integration into the final system. Both ends are fully connectorized for simple integration into the customer's machine.

Integral Bellows

The ABL1500WB-B uses an integral bellows system to provide a high level of environmental protection. This system protects the air bearings and drive system from process-generated contamination like abrasive debris. The design also has been optimized to minimize the influence of the bellows on the stage's geometric performance.


Mechanical Specifications

Travel 200 mm 300 mm 400 mm 500 mm
Accuracy(1) E1 Calibrated ±0.7 µm ±0.7 µm ±0.8 µm ±0.8 µm
Standard ±8.0 µm ±12.0 µm ±16.0 µm ±20.0 µm
E3 Calibrated ±0.5 µm ±0.6 µm ±0.75 µm ±0.75 µm
Standard ±5.0 µm ±5.0 µm ±5.0 µm ±5.0 µm
Repeatability (Bidirectional) (1) E1 ±0.25 µm ±0.25 µm ±0.3 µm ±0.3 µm
E3 ±0.25 µm ±0.25 µm ±0.3 µm ±0.3 µm
Straightness(1) ±0.5 µm ±0.75 µm ±1.5 µm ±2.0 µm
Flatness(1) ±0.5 µm ±0.75 µm ±1.5 µm ±2.0 µm
Pitch ±2 arc sec ±3 arc sec ±4 arc sec ±5 arc sec
Roll ±2 arc sec ±3 arc sec ±4 arc sec ±5 arc sec
Yaw ±2 arc sec ±3 arc sec ±4 arc sec ±5 arc sec
Maximum Speed E1 2 m/s
E3 1.2 m/s
Maximum Acceleration 2 g (No Load)
Maximum Force (Continuous) 187.2 N
Load Capacity(2) Horizontal 60 kg
Side 25 kg
Operating Pressure 80 psi ±5 psig
Air Consumption 32-40 SLPM @ 551 kPa
Moving Mass (No Load) 13.7 kg
Stage Mass 50.2 kg 56.8 kg 64.0 kg 70.8 kg
Material Aluminum
MTBF (Mean Time Between Failure) 30,000 Hours
  1. Certified with each stage.
  2. Axis orientation for on-axis loading is listed.
  3. 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.
  4. To protect air bearing against under-pressure, an in-line pressure switch tied to the motion controller/amplifier ESTOP input is recommended.
  5. Air supply must be clean, dry to 0°F dew point and filtered to 0.25 μm or better; recommend nitrogen at 99.9% purity.
  6. For XY configurations utilizing an ABL1500-B as the upper axis and an ABL1500WB-B as the lower axis, the maximum upper axis travel is 300 mm.

Electrical Specifications

Drive System Brushless Linear Servomotor
Feedback Noncontact Linear Encoder (see signal period options on Order Information page)
Maximum Bus Voltage up to 80 VDC
Limit Switches 5 V, Normally Closed
Home Switch Near Center

Recommended Controller

Multi-Axis A3200 Ndrive MP/Ndrive CP/Ndrive HLe/Npaq MXR
Ensemble Ensemble MP/Ensemble CP/Ensemble HLe/Epaq
Single Axis Soloist Soloist MP/Soloist CP/Soloist HLe
  • ABL1500WB-B


  • ABL1500WB-B
  • ABL1500WB-B-XY

Ordering Information

ABL1500WB-B Air-Bearing Direct-Drive Linear Stage

Travel (Required)

Option Description
-200 200 mm travel
-300 300 mm travel
-400 400 mm travel
-500 500 mm travel

Feedback (Required)

Option Description
-E1 Incremental linear encoder, 1 Vpp amplified sine output
-E2 Incremental linear encoder, 0.1 µm TTL line driver output
-E3 High-accuracy incremental linear encoder, 1 Vpp amplified sine output

Cable Management (Required)

Option Description
-CMS1 Single axis cable management system
-CMS2 Cable management system for XY assembly
-CMS3 Cable management system for Y axis
-CMS4 Cable management system for XYZ assembly
-CMS5 Cable management system for XYIO, 2 extra cables, 1 extra air

Metrology (Required)

Option Description
-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.
-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. This is typically used for spare parts, replacement parts, or items that will not be used or shipped together (ex: stage only). These components may or may not be part of a larger system

Accessories (to be ordered as a separate line item)

ALIGN-NPA Non-precision XY assembly
ALIGN-PA10 XY assembly; 10 arc sec orthogonality. Alignment to within 7 microns orthogonality for short travel stages.
ALIGN-PA5 XY assembly; 5 arc sec orthogonality. Alignment to within 3 microns orthogonality for short travel stages.
ABF Air-bearing filtration kit