2MM9111WIDUL Angular Contact Ball Bearing P4S Super Precision DUL

The 2MM9111WI DUL is a super-precision angular contact ball bearing set consisting of two flush-ground bearings designed for universal mounting (back-to-back, face-to-face, or tandem). With a 15° contact angle and maximum-capacity internal design, this duplex set features light preload and delivers ABEC 7 dimensional precision with ABEC 9 running accuracy (P4S grade).

This bearing type is commonly used in machine tool spindles, precision gearboxes, and other applications requiring high rotational accuracy at low to moderate speeds. The open design allows for external lubrication systems in controlled environments.