MRC5212CFFDouble Row Angular Contact Ball Bearing – 60 mm ID, 110 mm OD, 36.51 mm Width, 30 Degree Contact Angle, Shielded Both Sides, CN Clearance

Product Description

What this part is: MRC 5212CFF double-row angular contact ball bearing, shielded on both sides. Two rows of balls run on a 30° contact angle, so the bearing carries radial load together with thrust in both directions from a single position. Bore Diameter: 60 mm. Outside Diameter: 110 mm. Overall Width: 36.51 mm (1-7/16 in). Total Width: 36.51 mm. Contact Angle: 30°. Number Of Rows: 2. Rolling Elements: Ball. Bore Type: Straight. Closure Type: Shielded both sides. Internal Clearance: CN. Design Units: Metric. Series: 5200. Base Number: 5212. Part Number: 5212CFF. Unit Quantity: 1 Pc. Decoding the designation: 5212 — MRC double-row angular contact ball bearing, 5200 series, 60 mm bore. C — non-filling-notch construction with outwardly convergent contact angles, rigid design. FF — two shields, one over each face. What these specs mean in practice: A 30° contact angle places more of the load path along the bearing axis than a 15° or 25° execution, so thrust capacity is higher and the limiting speed lower. Because the two rows oppose each other, one bearing locates a shaft axially in both directions and resists an overturning moment. Outwardly convergent contact angles set the two load lines to meet outside the bearing, which spreads the effective support base and gives the rigid moment stiffness this design is chosen for. Non-filling-notch construction keeps both raceway shoulders full height on each row, so thrust is carried equally in either direction. Closure Type: Shielded both sides. The two shields run with a small clearance to the inner ring, so they hold the grease charge in the bearing and keep coarse contamination out with no rubbing contact and no added running torque. Internal Clearance: CN. Standard radial internal clearance, set for a normal interference fit on the shaft and a normal running temperature. Mounting data: Bore Diameter: 60 mm, straight. Outside Diameter: 110 mm. Overall Width: 36.51 mm (1-7/16 in). The shields sit inside the 36.51 mm width, so the mounting envelope matches the open execution of the same number. Quantity and configuration: Unit Quantity: 1 Pc. One complete double-row bearing, rings, balls, cage and both shields in one assembly. Interchange guidance: The 60 x 110 x 36.51 mm envelope with a 30° angle is the ISO 3212 section. Cross-Reference 1: SKF 3212 A-2Z. Cross-Reference 2: NSK 3212 B-2Z. Cross-Reference 3: NTN 5212SZZ. Cross-Reference 4: Koyo 5212ZZ. Cross-Reference 5: Fafnir 5212WG. Cross-Reference 6: RHP 3212-2Z. Cross-Reference 7: SNR 3212-2Z. Cross-Reference 8: MRC 5212CFF. Cross-Reference 9: MRC 5212C (related, open execution of the same bearing). Searchable forms of the number: 5212CFF, 5212-C-FF, 5212 CFF, 5212C FF, 3212.