ABL1500WB-B Air-Bearing Direct-Drive Linear Stage

Description

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.

Specifications

Mechanical Specifications

ModelABL15020WBABL15030WBABL15040WBABL15050WB
Travel 200 mm 300 mm 400 mm 500 mm
Accuracy(1) LN HALAR ±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
LT HALAR ±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
Repeatability (Bidirectional) (1) LN ±0.25 µm ±0.25 µm ±0.3 µm ±0.3 µm
LT ±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 LN 1.2 m/s
LT 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

Dimensions

  • ABL1500WB-B
  • ABL1500WB-B-XY

Ordering Information

Ordering Example

ABL15 030WB-B -M -10X2 -NC -LN30AS -XY-CMS

Ordering Options

Series Travel (mm) Mounting and Grid PatternMotorLimitsLinear EncoderOptions
ABL15 020WB-B
030WB-B
040WB-B
050WB-B
-M -10X2 -NC -LTnnAS
-LTnnX50
-LNnnAS
-SINGLE-CMS
-XY-CMS
-XIO-CMS
-XYZ-CMS
-XYIO-CMS

ABL1500WB-B Series Linear Air-Bearing Stage

Option Description
ABL15020WB-B 200 mm (8 in) travel linear air-bearing stage with linear motor, limits and bellows
ABL15030WB-B 300 mm (12 in) travel linear air-bearing stage with linear motor, limits and bellows
ABL15040WB-B 400 mm (16 in) travel linear air-bearing stage with linear motor, limits and bellows
ABL15050WB-B 500 mm (20 in) travel linear air-bearing stage with linear motor, limits and bellows

Mounting and Grid Pattern

Option Description
-M Metric dimension mounting pattern and holes

Motor

Option Description
-10X2 Dual brushless linear motors (BLMC-192-A)

Limits

Option Description
-NC Normally-closed end of travel limit switches (standard)

Standard Linear Encoders

Option Description
-LT20AS Linear encoder for ABL15020WB-B; amplified sine output
-LT30AS Linear encoder for ABL15030WB-B; amplified sine output
-LT40AS Linear encoder for ABL15040WB-B; amplified sine output
-LT50AS Linear encoder for ABL15050WB-B; amplified sine output
-LT20X50 Linear encoder for ABL15020WB-B; 0.1 micron line driver output
-LT30X50 Linear encoder for ABL15030WB-B; 0.1 micron line driver output
-LT40X50 Linear encoder for ABL15040WB-B; 0.1 micron line driver output
-LT50X50 Linear encoder for ABL15050WB-B; 0.1 micron line driver output

High-Accuracy Linear Encoders

Option Description
-LN20AS High-accuracy linear encoder for ABL15020WB-B; amplified sine output
-LN30AS High-accuracy linear encoder for ABL15030WB-B; amplified sine output
-LN40AS High-accuracy linear encoder for ABL15040WB-B; amplified sine output
-LN50AS High-accuracy linear encoder for ABL15050WB-B; amplified sine output

Options

Option Description
-SINGLE-CMS Cable management system for single-axis applications
-XY-CMS Cable management system for X-Y assembly; order with x-axis only
-XIO-CMS Cable management system for single axis with two customer cables and one customer air line
-XYZ-CMS Cable management system for X-Y-Z assembly; order with x-axis only
-XYIO-CMS Cable management system for X-Y assembly with two customer cables and one customer air line; order with x-axis only

Accessories (to be ordered as separate line item)

Option Description
HALAR High-accuracy system – linear error correction for accuracy and repeatability
ALIGNMENT-PA10 XY assembly; 10 arc sec orthogonal
ALIGNMENT-PA5 XY assembly; 5 arc sec orthogonal