NSK95BT10XADBLP4ASuper Precision Angular Contact Bearing — 95 mm ID, 145 mm OD, 22.5 mm Width, Open, Back-to-Back DB Set, Light Preload, P4A, 2 Pcs

Product Description

What this part is

NSK 95BT10XADBLP4A, a super-precision angular contact ball bearing from NSK’s spindle range, supplied as two pieces matched back-to-back. Bore: 95 mm. Outside diameter: 145 mm. Width: 22.5 mm per bearing. Precision: P4A, ABEC 7. Country of origin as recorded: Japan.

Decoding the order code

95: bore, 95 mm. 10: the dimension section, which puts this bearing on the 95 x 145 x 22.5 mm envelope. DB: back-to-back matched pair. L: light preload. P4A: ISO Class 4 accuracy, ABEC 7.

What these specs mean in practice

Back-to-back mounting sets the two effective load centres wide apart, which is what gives a DB pair its moment stiffness and its ability to carry thrust in both directions. It is the arrangement used at the front bearing position of a machine-tool spindle. A face-to-face pair on the same bearings would locate more forgivingly in a less accurate housing and resist moments less. Light preload removes axial play while keeping heat generation and running torque low, and it is the second of NSK’s four preload steps below medium and heavy.

Quantity and configuration

Two pieces, factory-matched as a back-to-back set at light preload.

Fitting notes

Both faces are open. A back-to-back pair is fitted with the wide faces of the outer rings together. Bore and outside diameter tolerances are to ISO Class 4, so shaft and housing fits should be specified to match rather than to a standard-class table.

Interchange guidance

The 95 x 145 x 22.5 mm envelope is the NSK 10 dimension section at bore 95, shared with the 95BAR10 and 95BTR10 designations. Those are related sizes: each carries its own contact angle, so neither is a substitution. The searchable forms of this designation include 95BT10XADBLP4A, 95BT10XA-DBL-P4A, 95BT10XA DBL P4A, 95BT10X and 95BT10XADBL.