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MRCAngular Contact Ball Bearing – 110 mm ID, 170 mm OD, 28 mm Width, Straight Bore, Open, 15 Degree, Light Section

Condition: New

Availability:

1 in stock

Single-row angular contact ball bearing, 110 x 170 x 28 mm, 15° contact angle, counterbored outer ring, open both faces, straight bore, light section.

List Price

$358.51

1 in stock

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Specifications

Key Specifications

MFR / BrandMRC
Model122KR 7022C
Bearing TypeAngular Contact Ball Bearing, Open
ID110 mm
OD170 mm
Width28 mm

Technical Specifications

MaterialBearing Steel
SeriesMRC 12x light section, R-type
LubricantOil/Grease
Base Number122R
Industry TermsAngular contact ball bearing, Marlin Rockwell bearing, precision ball bearing, spindle bearing
Common MisspellingsM.R.C., MCR, Marlin Rockwel, 122-K-R, 122 K R
Application TypesMachine tool spindles, pumps, gearboxes, combined radial and thrust load shafts
Bore Shaft Size110 mm (4.3307 in)
Mpn Variants122KR; 122-KR; 122 KR; 122R; 122-R
Rolling ElementsBall
Number Of Rows1
Bore TypeStraight, counterbored outer ring
Harmonization Code8482.10.50
Contact Angle15°
Part Number122KR
Seller Part Number: B-C3#TPKLPS

Product Description

What this part is

MRC 122KR single-row angular contact ball bearing. Bearing type: Angular contact ball bearing. Bore: 110 mm. Outside Diameter: 170 mm. Overall Width: 28 mm. Contact Angle: 15°. Bore Type: Straight. Closure Type: Open, both faces. Number Of Rows: 1. Rolling Elements: Ball. Material: Chrome bearing steel. Unit Quantity: 1 Pc.

Decoding the designation

122 — MRC 12x light-section angular contact block, giving Bore: 110 mm.

KR — R-type execution, counterbored outer ring, Contact Angle: 15°. The counterbore admits the full ball complement from one side and sets the low-angle raceway geometry.

What these specs mean in practice

Contact Angle: 15°. The shallow angle favours speed and radial stiffness while still locating the shaft axially, which suits machine-tool spindles and high-speed gearbox positions. A single row takes thrust in one direction, so a second bearing facing the other way carries thrust the other direction. The 28 mm width across a 110 mm bore puts this in the light section, keeping the housing bore at 170 mm.

Quantity and configuration

Unit Quantity: 1 Pc. One bearing, open on both faces, straight bore.

Fitting notes

The bearing mounts with an interference fit on the ring that rotates, seated square against a shoulder. The high shoulder is the thrust face and the low face carries the counterbore, so the direction the bearing faces on assembly sets which way thrust is carried. Mounting force is applied through the ring being fitted rather than across the balls.

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