MRCXLS4-1/4Angular Contact Ball Bearing – 4-1/4 in Bore x 6 in OD x 7/8 in Wide, 15°, Phenolic Cage, Open

Product Description

What this part is: MRC XLS4-1/4 single-row angular contact ball bearing, inch series. Bore Diameter: 4.2500 in. Outside Diameter: 6.0000 in. Overall Width: 0.8750 in. Contact Angle: 15°. Rolling Elements: Ball. Number Of Rows: 1. Bore Type: Straight. Closure Type: Open. Cage Material: Phenolic. Cage Type: Machined. Bearing Material: Chrome steel. Series: MRC XLS inch. In metric the envelope measures 107.95 x 152.4 x 22.225 mm. GTIN: 097741022415. Decoding the designation: XLS — MRC’s inch-series extra-light angular contact range, built with a machined phenolic cage and a 15° contact angle. 4-1/4 — the bore in inches, stated directly rather than as a bore code. The same range runs XLS4-1/2 and XLS4-3/4 on the sizes either side. What these specs mean in practice: Contact Angle: 15°. A shallow angle keeps ball centrifugal loading low and axial stiffness moderate, so the bearing favours speed and running accuracy over heavy thrust. A 25° or 40° bearing on the same envelope would reverse that balance. Cage Material: Phenolic, machined. Fabric-base phenolic runs quieter and lighter than steel or brass, absorbs oil into the laminate, and is the standard high-speed spindle cage material. The section is square: outside diameter minus bore, halved, equals the width at 0.8750 in. That thin section keeps the bearing shallow in the radial direction, which is what suits it to a housing with limited wall depth. Single row, angular contact, so thrust is carried in one direction only. Two bearings mounted back-to-back or face-to-face give location in both directions. Mounting data: Bore Type: Straight, 4.2500 in shaft seat. Housing bore 6.0000 in. Width across the rings 0.8750 in. Closure Type: Open, so the housing supplies the lubricant and the sealing. Quantity and configuration: Unit Quantity: 1 Pc. One individual bearing. Interchange guidance: SKF carries the MRC line under the same XLS4-1/4 designation. The RHP XLJ imperial series maps to the MRC XLS range on the interchange charts and shares this envelope. Searchable variants of the number: XLS4-1/4, XLS41/4, XLS 4 1/4, XLS 4-1/4.