2MM220WIDUL Angular Contact Ball Bearing Super Precision P4S

The 2MM220WI DUL is a super-precision angular contact ball bearing set from Timken's Fafnir MM series. This duplex universal arrangement consists of two flush-ground bearings with a 15° contact angle, maximum-capacity WI internal design, 100mm bore, 180mm outside diameter, and 68mm combined width. Manufactured to P4S precision class (ABEC 7 dimensional tolerances with ABEC 9 running accuracy), the set features light preload and open enclosure.

Super-precision angular contact ball bearings are designed for applications requiring high rotational accuracy and rigidity, such as machine tool spindles, precision gearboxes, and grinding machinery. The duplex universal configuration allows flexible mounting in back-to-back, face-to-face, or tandem arrangements to accommodate axial loads from either or both directions. The WI design suits low to moderate speed applications where higher load capacity is prioritized.