Air bearing Introduction Features Specifications Brochure Download Where to Buy Support View: Diagrams Motion Precision, Reproducibility Chart General Characteristics Compared for Various Bearings Chart External Dimensions Part 1 External Dimensions Part 2 External Dimensions Part 3 External Dimensions Part 4 Air Bearing Inspection Method OTHER AIR SPINDLE MOTOR Air Spindle Motor AIR BEARING VIDEO To download the images Right click on Download Link and Save Target As to your local folder. DOWNLOAD

INTRODUCTION Rotation Precision Exceeding Sub-Microns, High Rigidity, High Endurance, Canon's Air Bearings Have Them All Canon's air bearings, developed originally as a key component in super-high precision manufacturing technology, have a special structure that gives them superior characteristics such as high rigidity incomparable with any other, high precision, and high endurance. Rotation Precision Exceeding Sub-Microns, High Rigidity, High Endurance Canon’s Air Bearings Have Them All Canon’s air bearings, developed originally as a key component in super-high precision manufacturing technology, have a special structure that gives them superior characteristics such as high rigidity incomparable with any other, high precision, and high endurance. The rotation precision of an air bearing is designed to be 0.05µm maximum, much more precise than ball bearings. Another factor that is crucial in achieving high precision is that the reproducibility be 0.01µm maximum and that this value can be maintained. Canon’s air bearings use porous chokes in their bearings, so even under normal factory supply-air pressure (490 kpa), they are sufficiently rigid for common use. Compared with bearings with orifice chokes and selfformed chokes, the rigidity per unit area is higher, the flow consumption is about ten times (one digit) smaller, and the damping capacity is also higher than that of bearings with other types of chokes. FEATURES The use of carbon-type porous materials prevents burning and catastrophic failures due to air during rotation. Even with an increased load capacity, high precision is maintained. The highest rotation precision-best in the industry-is attained both in the radial and axial directions. Because of the little air consumption, the air compressor could be made compact. SPECIFICATIONS   AB-30R AB-40RVC AB-50R AB-50RV AB-50LRVC AB-80R AB-80RV AB-100R AB-100RV AB-150R AB-200R AB-250R AB-300R AB-400R Radial Rigidity (N/um) 12.7 24.5 24.5 49.0 34.3 55.9 98.0 166.6 205.8 392.0 333.2 Axial Rigidity (N/um) 19.6 27.4 35.3 35.3 205.8 323.4 558.6 705.6 1176.0 1234.8 1705.2 Normal Radial Load (N) 25.5 36.8 49.0 98.0 68.6 111.7 196.0 333.2 411.6 784.0 666.4 Max Radial Load (N) 32.3 49.0 61.7 122.5 86.2 140.1 245.0 421.4 519.4 980.0 833.0 Normal Axial Load (N) 39.2 41.1 70.6 70.6 411.6 646.8 1117.2 1411.2 2352.0 2469.6 3410.4 Max Axial Load (N) 49.0 49.0 88.2 88.2 519.4 813.4 1401.4 1764.0 2940.0 3087.0 4263.0 Radial Rotation Accuracy (um) 0.07 0.07 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.09 Axial Rotation Accuracy (um) 0.04 0.05 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.05 0.05 Max Rotation Speed (rpm) 30,000 24,000 20,000 22,000 15,000 10,000 5,000 3,000 2,500 1,500 500 Air Consumption (l/min)* 4 5 6 12 8 10 15 20 35 40 40 Rotor I (kg•m2) 1.23 x 10-5 0.85 x 10-4 1.925 x 10-4 1.925 x 10-4 1.32 x 10-3 4.85 x 10-3 2.975 x 10-2 6.0 x 10-2 0.2775 0.63 1.3025 Weight (kg) 0.3 1.0 1.5 2.3 3.9 8.5 22 39 77 110 153