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☆ product features The two shaft bearings circle with a hole of the lubricating oil tank seat, separated from a circle, 2-roll cage and composition. Grinding every lap you can adjust the thickness of the bearing and pre-clearance. Bearing contact angle as 60 °, for two under the direction of axial load to the main axial, radial combined loading. The bearings are widely used in the type of grinding machine, boring machine, lathe, milling machine, drilling machine, and so is designed spindle on the design for its support of high-precision bearings. The types of bearings with high accuracy and rigidity, low temperature rise, high-speed, easy handling, and other advantages. ★ size range Bearing out in the size of the basic size of the data in the table. Diameter size range: 50mm ~ 300mm Outside diameter size range: 80mm ~ 420mm Size range width: 38mm ~ 144mm   Tolerance 0000 ZWZ two-way thrust angular contact ball bearings to provide SP, P4 tolerance level, the need to furnish a UP-class products tolerance. ● Cage ZWZ two-way thrust angular contact ball bearings used-car copper Cage, the code did not post signs. ◇ pre-load Two-way thrust angular contact ball bearing pre-load determined by every other lap.