ABTech: rotary, linear and multi-axis air bearing systems Testing Positions to 4 Millionths of An Inch Air-bearing stages and high-resolution scales drive extreme accuracy and repeatability. Al Presher, Contributing Editor Design News, January 8, 2007 Welcome To ABTech ABTech Inc, is a supplier of precision fluid film bearings and mechanical bearing motion systems. ABTech Inc offers a variety of rotary , linear and multi-axis air bearing, oil hydrostatic and precision mechanical bearing products and accessories . With a successful track record for high quality custom design and manufacturing o