MRCAngular Contact Ball Bearing Set – Face-to-Face Duplex Pair, 80 mm ID, 125 mm OD, 22 mm Section Width, Open, 15° Contact Angle

Product Description

What this part is

MRC 7116KRDF is a single-row angular contact ball bearing supplied as a face-to-face duplex pair. Bearing Type: angular contact ball bearing set. Base Number: 7116. Series: 7100K, MRC’s extra-light angular contact section. Design Units: metric. The rings are chrome steel, the bearing runs open with no seal or shield, and the cage material is phenolic.

Dimensions and published specifications

Bore: 80 mm (3.1496 in). Outside Diameter: 125 mm (4.9213 in). Overall Width: 22 mm (0.8661 in) per bearing. Total Width: 44 mm (1.7323 in) for the set. Bore Type: straight. Number Of Rows: 2. Rolling Elements: balls. Closure Type: open. Contact Angle: 15°. Cage Material: phenolic. Bearing Material: chrome bearing steel. Precision Class: ABEC 5 / P5. Internal Clearance: N/A. Lubricant: oil. Operating temperature range: −30 °C to 120 °C, the phenolic cage setting the upper figure. Item Weight: 4.30 lb for the set.

Decoding the designation

Series: 7100K, angular contact extra light. Bore code 16 gives an 80 mm bore. Type letter R sets the contact angle at 15° with a counterbored outer ring. Execution code DF sets the pair face-to-face. Searchable forms of the number include 7116KRDF, 7116 KR DF, 7116-KR-DF, 7116K RDF and 7116KR.

What these specs mean in practice

A 15° contact angle carries less thrust and more speed than a 40° angle, which makes it the choice where shaft position matters more than axial capacity. The extra light 7100K section keeps outside diameter and mass down for a given bore, so more of the envelope stays available to the housing. A phenolic cage is light and runs quietly at speed, and the counterbored outer ring lets the ball complement be assembled at full contact. Face-to-face mounting places the two contact lines converging inward, giving a short effective bearing span that holds shaft deflection and misalignment better than a back-to-back set.

Quantity and configuration

Unit Quantity: 2 Pcs, forming one face-to-face duplex set. Arrangement / Configuration: DF duplex pair, face-to-face. Mounting Arrangement: face-to-face (DF). Preload: preloaded duplex pair, set by matched face grinding. Duplex faces are ground as a matched pair, so the set clamps solid against the shoulders and establishes its own preload once the rings are drawn up. Internal Clearance: N/A, since a ground duplex set is preloaded by design. The carton arrangement code DF is carried in MPN Variants for search.

Interchange guidance

ISO base number: 7016, the 80 x 125 x 22 mm envelope. SKF 7016 CD/P4A is a 15° interchange in the same section, and FAG B7016-C-T-P4S is the equivalent Schaeffler execution. A 29° or 40° bearing on the same envelope is a related size, carrying a different thrust-to-speed balance. The same envelope in a back-to-back (DB) execution is likewise a related size, since the ground offset and load path differ.

Country of origin

Country of origin: United States.