70BNR10HTDUELP4Y Super Precision High Speed Angular Contact Duplex

The 70BNR10HTDUELP4Y is a super-precision hybrid angular contact ball bearing from NSK's ROBUST series. It features ceramic silicon nitride balls paired with SUJ2 steel rings, a phenolic resin cage, and an 18° contact angle. This duplex universal set consists of two flush-ground bearings with extra light preload, manufactured to ISO Class 4 (ABEC 7) precision with special tolerancing for set matching.

Designed for high-speed spindle applications including machine tool spindles, precision grinders, and high-performance rotating equipment where minimal thermal generation, extended bearing life, and superior accuracy are critical. The duplex universal arrangement allows flexible mounting in back-to-back, face-to-face, or tandem configurations to optimize axial and radial load capacity.