MRCAngular Contact Ball Bearing Matched Set 75x160x37 mm 29 Degree ABEC 5 Light Preload

Product Description

What this part is

An MRC 7315 DS angular contact ball bearing supplied as a matched set. Bore 75 mm, outside diameter 160 mm, width 37 mm per bearing, in the ISO 7315 envelope. Light preload of 0.0002 in.

Decoding the designation

73 denotes the MRC 7000-series angular contact family, a 29° contact angle in the MRC scheme. 15 denotes the bore code, a 75 mm bore. ABEC 5 denotes the P5 precision class.

What these specs mean in practice

The MRC 29° contact angle sits between the common 25° and 40° grades, so it carries more thrust than an ISO 15° or 25° bearing of the same envelope and runs slower. Naming the scheme matters here because a 7315 in the SKF or FAG schemes is a different contact angle entirely. Light preload keeps running torque and heat generation down while removing internal play.

Published specifications

Bore: 75 mm. Outside diameter: 160 mm. Width: 37 mm per bearing. Contact angle: 29° (MRC scheme). Precision class: ABEC 5 (P5). Preload: light, 0.0002 in. Rolling elements: steel balls, single row per bearing. Closure: open.

Quantity and configuration

1 Set, matched and ground to the specified light preload.

Fitting notes

A matched set is ground together and the bearings stay as a set, with preload established by the matched ring faces once clamped solid against square shoulders. Each row takes thrust in one direction, so the orientation of the set determines whether thrust is carried one way or both.

Interchange guidance

An ISO 7315 B at 40°, or a 7315 C at 15°, shares the 75 x 160 x 37 mm envelope at a different contact angle and is a related size rather than an interchange. Variants at medium or heavy preload, or at a different precision class, are likewise related sizes.