MRC7108KRDTDBAngular Contact Ball Bearing – 40 mm ID, 68 mm OD, 15 mm Width, Open, 15° Contact Angle, ABEC 7

Product Description

What this part is:

MRC 7108KRDTDB is a set of two angular contact ball bearings, universally ground for back-to-back or tandem mounting. Unit Quantity: 2 Pcs. Each bearing is 40 mm bore, 68 mm outside diameter and 15 mm wide, with a 15° contact angle and a counterbored outer ring.

Decoding the designation:

7108 — MRC angular contact ball bearing, 40 x 68 x 15 mm envelope (ISO 7008 size). The leading 7 marks the series and carries no contact-angle information.

KR — MRC R-type: 15° contact angle with a counterbored outer ring.

DT — duplex tandem arrangement.

DB — duplex back-to-back arrangement. DT and DB together mark a universally ground set.

BKE#7 — BKE is a machined phenolic cage; #7 is the ABEC 7 precision grade.

Specifications:

Bore Diameter: 40 mm. Outside Diameter: 68 mm. Width: 15 mm per bearing. Total Width: 30 mm for the pair. Contact Angle: 15°. Precision Class: ABEC 7. Cage Material: Phenolic. Bore Type: Straight. Number Of Rows: 1 per bearing. Closure Type: Open. Unit Quantity: 2 Pcs.

Dimensions and mounting:

Mounting Arrangement: universally ground for back-to-back (DB) or tandem (DT) mounting. Outer Ring Form: counterbored. Bore: 40 mm, straight. Pair stack width: 30 mm.

Compatibility and replacement:

Cross-references on the 40 x 68 x 15 mm envelope at 15°: SKF 7008 CD/P4A, FAG B7008-C-T-P4S, NSK 7008CTYNSULP4 and RHP 7008 CTDULP4.

Frequently asked questions:

What size is the MRC 7108KRDTDB?

Each bearing is 40 mm bore by 68 mm outside diameter by 15 mm wide, the ISO 7008 envelope.

What contact angle and precision class does it have?

The KR designation gives a 15° contact angle with a counterbored outer ring, and the set is ABEC 7.

How many bearings are in the set?

Two bearings, universally ground so the pair can be mounted back-to-back (DB) or in tandem (DT).