MRC100KRDSMatched Angular Contact Ball Bearing Set – 10 mm Bore x 26 mm OD x 8 mm Width, 15°, Universally Ground

Product Description

What this part is

MRC 100KRDS matched set of single-row angular contact ball bearings, extra-light series, universally ground to a preload requirement. Bore: 10 mm. Outside Diameter: 26 mm. Overall Width: 8 mm per bearing. Total Width: 16 mm as a mounted set. Contact Angle: 15°. Preload: Universally ground to a preload requirement. Number Of Rows: 1 per bearing. Rolling Elements: Balls. Bore Type: Straight. Closure Type: Open both faces. Material: Chrome steel. Unit Quantity: 2 Pcs.

Decoding the designation

100K — MRC’s extra-light series, the smallest section the family is built in.

00 — the bore code. In MRC’s table codes below 04 are explicit, and 00 gives Bore: 10 mm.

R — Contact Angle: 15°, with a counterbored outer ring. The counterbore admits a full ball complement past a low shoulder, and the high shoulder opposite carries the thrust.

DS — universally ground to a preload requirement. The bearings stack in any of the three duplex orientations — back-to-back, face-to-face or tandem — and the ground face offset produces the designed preload when the set is clamped.

What these specs mean in practice

At a 10 mm bore this is instrument and small-spindle territory, where running accuracy matters more than load. Contact Angle: 15° is the shallow end of the angular contact range, giving the highest speed capability of the family and the lowest heat generation. Preload: Universally ground to a preload requirement is what removes play from a small shaft without a shim stack — the offset is ground in, so clamping the pair produces a repeatable stiffness and a repeatable running torque. Mounted as a pair the set takes thrust in both directions. Bore: 10 mm. Outside Diameter: 26 mm. Overall Width: 8 mm per bearing.

Quantity and configuration

Unit Quantity: 2 Pcs. A universally ground matched set, straight bore, open on all faces, supplied together.

Fitting notes

The ring faces are marked, and the marks are lined up according to the orientation chosen so the ground offset closes as the set is clamped. Both inner rings are clamped against each other and both outer rings against the housing. On a 10 mm bore the clamp torque is small and is applied with a proper spanner rather than by feel, since the preload is set by the grind and only needs the faces brought into contact.

Interchange guidance

10 x 26 x 8 mm is the 7000 envelope and the carton carries the 7000 cross itself. A 7000 C is the 15° execution and matches on both angle and envelope, so an interchange reduces to the grind: the substitute has to be universally ground to a preload requirement and supplied as a matched set.

Searchable variants

100KRDS, 100-KR-DS, 100 KRDS, 100KR, 7000, MRC 100KRDS.