TIMKEN Ultra-precision ball bearings designed to meet the high demands of the machine tool requirements for high-speed, precision and hardness. The bearings can be produced for the difference between the highest standards of precision ABEC-7 to ABEC-9, ball bearing industry recognition. 
Most ultra-precision ball bearings with a contact angle of 15 ° to 25 °, to accommodate different combinations of radial and axial loads. Special channel handling and ball bearing design available to the highest possible operating speed. 
Alternatively hybrid bearings having steel ceramics and ceramic balls, in order to adapt to high-speed and other demanding applications. 
A helical ball support bearing complete supply, having a contact angle of 60 ° and a maximum compensation balls, suited for high loads and axial rigidity of the tool most precise positioning. 
Width tolerance of their predetermined precision bearing rings, roundness, perpendicularity, taper, runout and axial runout increases parameters for customers ISO / ABEC are not defined, including preload tolerances, function test , m & traceability codes, cleanliness, track curvature, grade ball and roundness, surface treatment (functional & non-functional surface), the specifications of steel, the cage trim and chamfer design and installation. The definition of these parameters to improve the quality of the product contact ball bearings Timken precision angular, thereby improving the performance of the machine spindle.