--- title: Air-Bearing Spindles - ABTech inc. description: ABTech’s high precision air-bearing spindles provide the ultimate performance utilizing a proven and robust design. High stiffness, load capacity, and very low error motion make these spindles ideal for precision machining, grinding, single-point diamond turning, and high precision scanning. They are available with integral brushless dc motors and encoders in low-speed configurations for work holding --- ![SP138-Spindle-4](https://www.abtechmfg.com/hs-fs/hubfs/ABTech_August2023/Images/SP138-Spindle-4.png?width=350&height=212&name=SP138-Spindle-4.png "SP138-Spindle-4") SP138with motor drive & foot mount ![SP125_Air_Bearing_Spindle](https://www.abtechmfg.com/hs-fs/hubfs/ABTech_August2023/Images/SP125_Air_Bearing_Spindle.jpg?width=300&height=323&name=SP125_Air_Bearing_Spindle.jpg "SP125_Air_Bearing_Spindle") SP125with motor drive & flange mount # Air-Bearing Spindles ABTech’s high-precision air-bearing spindles provide the ultimate performance utilizing a proven and robust design. High stiffness, load capacity, and very low error motion make these spindles ideal for precision machining, grinding, single-point diamond turning, and high-precision scanning. They are available with integral brushless dc motors and encoders in low-speed configurations for work holding or higher speed for grinding and scanning applications. These orifice-compensated air-bearing spindles use a single piece of 440 CSS shaft and thrust plate with 660 bearing bronze journal providing a proven, robust, and forgiving design. Available in a variety of sizes and speeds with a flange, foot, or a-thermal mounting. Optional motion controllers incorporate a digital amplifier with easy-to-use programmable controls and digital spindle speed readout. They have full capability to integrate with your existing CNC controller as well. With this modular design approach and complete engineering support capabilities, ABTech will respond quickly to provide a custom solution to your unique OEM needs for ultra-precision motion. No need to settle for standard catalog offerings for your application. ## Configuration Flexibility to Meet Your Specific Needs Part of our [“Pride in Precision”](https://www.abtechmfg.com/about/?hsLang=en) philosophy means providing you with the precise solution needed. We don’t believe in selling our customers more, or less than what their application calls for. Through the last couple of decades working with our customers, we have developed a broad range of [options and accessories](https://abtechmfg.com/precision-motion-components/accessories/?hsLang=en) as well, to address the majority of ultra-precision motion applications. No matter how broad our product options are, we realize they don’t address every possible application. Our precision motion experts will work closely with you to configure a rotary motion solution that will meet your exact needs. * AEROSPACE * AEROSPACE * AUTOMOTIVE * AUTOMOTIVE * AVIATION * AVIATION * BEARINGS * BEARINGS * ENERGY * ENERGY * LAND & MARINE * LAND & MARINE * OPTICS * OPTICS * SEMICONDUCTOR * SEMICONDUCTOR [ DOWNLOAD SPECSHEET ](https://www.abtechmfg.com/hubfs/2020-AirBearing-Table_brochure.pdf?hsLang=en) ## 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. ![AT100](https://www.abtechmfg.com/hubfs/ABTech_August2023/Images/AT100-for-web1-no-bkgnd-4.jpg) AT100 ![AT100](https://www.abtechmfg.com/hubfs/ABTech_August2023/Images/AT100-for-web1-no-bkgnd-4.jpg) AT 100 Foot Mount ![AT200 Direct Drive with 1.25 arcsec accuracy](https://www.abtechmfg.com/hubfs/ABTech_August2023/Images/AT200DD-2.jpg) AT200 Direct Drive with 1.25 arcsec accuracy ![AT200 Direct Drive with 1.25 arcsec accuracy](https://www.abtechmfg.com/hubfs/ABTech_August2023/Images/AT200DD-2-300x200.jpg) AT200 Direct Drive with 1.25 arcsec accuracy ![AT 100 Foot Mount](https://www.abtechmfg.com/hubfs/ABTech_August2023/Images/AT100-foot-mount-2%20(1).jpg) AT 100 Foot Mount ![AT 100 Foot Mount](https://www.abtechmfg.com/hubfs/ABTech_August2023/Images/AT100-foot-mount-2.jpg) AT 100 Foot Mount ![AT200 with variable speed motor, friction clutch and onboard DRO](https://www.abtechmfg.com/hubfs/ABTech_August2023/Images/AT200_motor_Friction-clutch-3.jpg) AT200 with variable speed motor, friction clutch and onboard DRO ![AT200 with variable speed motor, friction clutch and onboard DRO](https://www.abtechmfg.com/hubfs/ABTech_August2023/Images/AT200_motor_Friction-clutch-3%20(1).jpg) AT200 with variable speed motor, friction clutch and onboard DRO ![AT 200 Direct Drive with TC8](https://www.abtechmfg.com/hubfs/ABTech_August2023/Images/AT200-DD-with-SPC-1-Controller-2%20(1).jpg) AT 200 Direct Drive with TC8 ![AT 200 Direct Drive with TC8](https://www.abtechmfg.com/hubfs/ABTech_August2023/Images/AT200-DD-with-SPC-1-Controller-2%20(1).jpg) AT 200 Direct Drive with TC8 ![AT 200 Wet Grind Tableaccuracy](https://www.abtechmfg.com/hubfs/ABTech_August2023/Images/AT200GT-with-PRC-Controller-2.jpg) AT200 Wet Grind Table ![AT200 Wet Grind Table](https://www.abtechmfg.com/hubfs/ABTech_August2023/Images/AT200GT-with-PRC-Controller-2-300x201.jpg) AT200 Wet Grind Table ## GET A QUOTE TODAY Thank you for your interest in ABTech’s ultra-precision measurement tools and services. Please tell us a little about what you need to accomplish and we will be in touch to discuss any of the additional details that will help you choose your best option. [![GET A QUOTE »](https://no-cache.hubspot.com/cta/default/5052177/27576b60-b7fc-4839-b15d-0d822a7a2b6c.png)](https://cta-redirect.hubspot.com/cta/redirect/5052177/27576b60-b7fc-4839-b15d-0d822a7a2b6c) > 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 TiersonPresident > Vertex Optics **Made in the U.S.A** Every product we sell exemplifies our company-wide commitment to "Pride in Precision" craftsmanship. To that end, all of our products are designed, manufactured, and tested exclusively by ABTech at our New Hampshire facility. ## Solutions ![made in the USA](https://www.abtechmfg.com/hubfs/Website%20Refresh_2024/Logos/icon_made-in-usa.png) ## About ## Join our mailing list and never miss an update. ![](https://www.abtechmfg.com/hubfs/ABTech_August2023/Images/logo.png) 126 Route 12 North Fitzwilliam, New Hampshire 03447 (603) 585-7106 [**Contact Us**](https://info.abtechmfg.com/contact?hsLang=en) [![](https://www.abtechmfg.com/hubfs/Website%20Refresh_2024/Icons%20and%20Graphics/Social%20Icons/social-icon_linkedin.png)](https://www.linkedin.com/company/abtech-inc-/) [![](https://www.abtechmfg.com/hubfs/Website%20Refresh_2024/Icons%20and%20Graphics/Social%20Icons/social-icon_twitter.png)](https://twitter.com/ABTechInc) [![](https://www.abtechmfg.com/hubfs/Website%20Refresh_2024/Icons%20and%20Graphics/Social%20Icons/social-icon_facebook.png)](https://www.facebook.com/ABTechMFG) [![](https://www.abtechmfg.com/hubfs/Website%20Refresh_2024/Icons%20and%20Graphics/Social%20Icons/social-icon_instagram.png)](https://www.instagram.com/abtechmanufacturing/) [![](https://www.abtechmfg.com/hubfs/Website%20Refresh_2024/Icons%20and%20Graphics/Social%20Icons/social-icon_youtube.png)](https://www.youtube.com/user/ABTechInc/videos?reload=9) Proud Members of: ![](https://www.abtechmfg.com/hubfs/Website%20Refresh_2024/Logos/aspe-logo.png) ![](https://www.abtechmfg.com/hubfs/Website%20Refresh_2024/Logos/ntsl-international-logo.png) ![](https://www.abtechmfg.com/hubfs/Website%20Refresh_2024/Logos/spie-logo.png) ![](https://www.abtechmfg.com/hubfs/Website%20Refresh_2024/Logos/sba-logo-stacked.png) ![](https://www.abtechmfg.com/hubfs/Website%20Refresh_2024/Logos/A3logo.png) © 2026 Copyright ABTech Inc. All rights reserved. [Privacy Policy](https://www.abtechmfg.com/privacy-policy?hsLang=en) [Terms & Conditions](https://www.abtechmfg.com/terms-conditions?hsLang=en)