Air Bearing Rotary Table

AT Series – Rotary Air Bearing Table

AT Series – Rotary Air Bearing Table

AT300 Rotary Air Bearing

HDRT Series – Rotary Air Bearing Table

HDRT 3000

ABTech’s precision air-bearing rotary tables address the metrology needs for different weights and part sizes. Built for the most demanding applications, every table provides ultra-smooth motion, sub-micron accuracy, and absolute repeatability. They are designed and manufactured in-house to extremely tight geometric tolerances and have no mechanical contacting parts to wear or create drag. This allows for decades of reliable maintenance-free motion.

ABTech’s AT models come standard with dual-element filters/regulators and are commonly used as the core axis in equipment checking total indicator reading (TIR), roundness, flatness, squareness, perpendicularity, concentricity, and parallelism measurements. To speed up part setup and increase productivity, the AT model tables also come standard with our industry-best adjustable tilt and center (tip/tilt) worktables.

Accurate, Repeatable, Smooth Motion

Manufactured with tight geometric tolerances, our air bearings deliver the ultimate in accuracy with radial and axial error motion of as little as 1.0 µ” (25.0 nanometers) and angular errors (coning) of 0.5 µ” per inch (12.5 nanometers/25mm). Air bearings have no mechanical contacting parts to wear, or create drag. They are close to frictionless, providing ultra-smooth, repeatable and maintenance-free motion.

Superior Durability

Configuration Flexibility to Meet Your Specific Needs

		AT150	AT200	AT300	AT400	HDRT500	HDRT600
Certified Accuracy
Radial & Axial	<2.0 µ” (0.05 µm)					<10.0 µ” (0.250 µm)
Tilt (Coning)		<0.206 arc sec or 1.0µ”/in (0.025 µm/25mm)
Working Envelope
Maximum Part Diameter (swing)		12” 305 mm	16" 406 mm	24" 610 mm	32" 813 mm	40" 1.0 m	48" 1.2 m
Axial Load Capacity		200 lbs 136 Kg	500 lbs 226 Kg	1,200 lbs 544 Kg	2,000 lbs 907 Kg	3,000 lbs 1,361 Kg	5,000 lbs 2,268 Kg
Worktable Diameter		6" 152 mm	8” 203 mm	12″ 305 mm	16″ 406 mm	20” 508 mm	24” 610 mm
Tapped holes		1/4 -28 UNF
Worktable Configuration
Tilt and Center		4-knob spherical seat	8-knob spherical seat			n/a
Knob Configuration		2 centering, 2 leveling at 90⁰	4 centering , 4 leveling at 90⁰			n/a
Air Consumption		2.0 cfm @ 60 psi with dual stage filter/regulator				4.0 cfm @ 60 psi with dual stage filter/regulator
Product Dimension		9.25" OD x 5.50" T 235 x 140 mm	12.63" OD x 7.25" T 321 x 184 mm	17.25" OD x 8.50" T 438 x 216 mm	19.00" OD x 8.00" T 483 x 203 mm	22.00" OD x 3.40" T 560 x 86 mm	26.00" OD x 3.50" T 660 x 89 mm
Product Weight		50 lbs 23 kg	100 lbs 45 kg	240 lbs 110 kg	450 lbs 200 kg	220 lbs 100 kg	300 lbs 140 kg

Motor Drive Options

With proper selection and integration of high-performance brushless DC servo motors ABTech’s air bearing rotary tables provide ultra-smooth and precise rotary motion. With high torque, high performance motor drives, our motion experts will gather your specific requirements and work closely with our motor suppliers to create/select a motor drive that suits your specific application. Whether you need sub-micron position accuracy with minimal settle time and stringent following error specifications, high-speed constant motion, or a combination of both there is an ABTech rotary table that will meet your needs.

The motor drives are designed to accommodate a wide range of precision motion applications such as optical metrology; circular geometry gages; and micro machining with ultra-precision scanning, velocity control, speed regulation and precision indexing.

ABTech’s modular design approach facilitates multiple system configurations to optimize the price-for-performance required in your application. This approach allows the user to define the level of control desired for the most cost-effective solution. Our complete engineering services allow us to respond quickly to provide a solution to your O.E.M. requirements for ultra-precision rotary motion.

See What Our Customers are Saying

"We use 2 ABTech air-bearing spindles with tip/tilt and centering capability in our facility. These units are used for precision assembly and final metrology. We have never had an issue with either one, and the ABTech team is a great partner for us. We will be adding more systems as our young organization continues to grow".

Jayson Tierson

President, Vertex Optics

See What Our Customers are Saying

“Thanks a lot for your help [with remote technical support provided for the system installed at the South Pole]. Your rapid, informative correspondence was invaluable. Hopefully I won't be bothering you with any further questions, but it's good to know you're willing.”

Morgan Hedges

Post-Doctoral Research Associate, Princeton University

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Learn More

Air-Bearing Rotary Tables

Features & Benefits

Accurate, Repeatable, Smooth Motion

Superior Durability

Configuration Flexibility to Meet Your Specific Needs

Interested in Getting a Quote?

Technical Details