FAGB7013CTPAP4K5ULSuper-Precision Angular Contact Ball Bearing – 65 mm ID, 100 mm OD, 18 mm Width, Open, 15° Contact Angle, Universal Light Preload, P4S

Product Description

What this part is

An FAG B7013-C-TPA-P4S-UL super-precision angular contact ball bearing. Bore 65 mm, outside diameter 100 mm, width 18 mm, open on both faces, a single row of balls in a phenolic laminate cage, ground to P4S accuracy for universal matching at light preload.

Decoding the designation

B7013 is the FAG super-precision spindle bearing series in the ISO 70 light dimension series, bore code 13 giving 65 mm. In the FAG scheme C is a 15° contact angle. TPA is the fabric-base laminate cage — textile laminated phenolic. P4S is the super-precision accuracy grade, corresponding to ABEC 7 to 9. UL is the universal execution, ground so that any two bearings from the family mount back-to-back, face-to-face or in tandem and reach light preload without shims.

What these specs mean in practice

A 15° contact angle is the high-speed, low-thrust end of the angular contact range: the shallow angle keeps ball centrifugal and gyroscopic effects low, which is why this execution carries a limiting speed of about 18000 rpm in this size while a 25° or 40° bearing of the same envelope trades speed away for axial capacity. P4S accuracy holds bore, outside diameter and running runout to super-precision limits, which is what keeps a tool concentric at those speeds. A single row takes thrust in one direction, so axial location in both directions comes from pairing.

Cage and temperature

The phenolic laminate cage is machined, light, oil-retaining and outer-land guided in service, which suits high speed and oil-mist or oil-air lubrication. The record data puts continuous service between –30 °C and 100 °C.

Quantity and configuration

Single bearing, one row, 1 Pc. Preload is a property of a mounted pair, so a single UL bearing supplies no preload on its own.

Fitting notes

These bearings are directional: the wide land of the outer ring faces the thrust. On a universally ground pair the marked faces are set together for back-to-back or face-to-face and stepped in the same sense for tandem, and both rings are clamped solid so the ground offset does its work. Handling is done clean and by the rings, since a phenolic cage and a super-precision raceway are both easily marked.

Interchange guidance

The same 65 x 100 x 18 mm super-precision envelope at 15° is covered by SKF 7013 CD/P4A, NSK 7013CTRSU P4 and NTN 7013CG/GNP4. Contact angle, cage material and preload class are all part of the identity, so a B7013-E-T-P4S at 25°, a standard 7013 at P0 or a non-UL bearing is a related size in the same envelope rather than a substitution.