MRC5208MFFDouble-Row Angular Contact Ball Bearing, 40 x 80 x 30.2 mm, 30 Degree Contact Angle, Two Shields, 1 Pc

Product Description

What this part is

MRC 5208MFF double–row angular contact ball bearing. Brand: MRC. Manufacturer Part Number: 5208MFF. Bearing Type: double-row angular contact ball bearing. Series: 5200-M, on the ISO 3200 envelope. Bore: 40.000 mm. Outside Diameter: 80.000 mm. Overall Width: 30.20 mm (1–3/16 in). Contact Angle: 30°. Number of Rows: 2. Rolling Elements: balls. Closure Type: two shields. Bearing Material: through-hardened chrome bearing steel. Design Units: Metric. Unit Quantity: 1 Pc. GTIN: 097741011815.

Published ratings and mounting data

Dynamic Load Rating: 49 500 N (49.5 kN). Static Load Rating: 49 000 N (49.0 kN). Limiting Speed: 5 600 rpm on grease, 7 500 rpm on oil. Shielded speed rating: 5 600 rpm. Maximum shaft and housing fillet radius ra: 1.00 mm. Precision Rating: ABEC 1 / P0. Harmonization Code: 8482.10.50.

Decoding the designation

Series 5200: MRC’s double–row angular contact ball bearing series, built on the ISO 3200 envelope, which is why the carton also carries 3208. Bore code 08: 40 mm bore. M: the 5200-M build, rated 49 500 N dynamic against 44 900 N for the 5208-C build on the same envelope. FF: two shields. On MRC nomenclature FF denotes shields and ZZ denotes rubber seals.

What these specs mean in practice

Two rows of balls run at opposed 30° angles inside a single pair of rings, so one bearing carries heavy radial load together with thrust in both directions and resists tilting moments, in roughly the axial space a single wide bearing occupies. The preload relationship between the two rows is ground in at the factory and is fixed, which makes the bearing a rigid, self-contained locating unit.

A 30° contact angle sits between the shallow angles that favour radial capacity and speed and the steep angles that favour thrust, giving a substantial share of both. That is why the 5200 series runs in pumps, gearboxes, machine tool feed screws and vertical shafts. Two shields keep coarse contamination out and grease in without the drag and temperature rise a contact seal adds, so the shielded speed rating matches the grease rating at 5 600 rpm.

Quantity and configuration

Unit Quantity: 1 Pc. One complete non–separable bearing: both rings, both ball rows, cage and both shields.

Cross references

The 40 x 80 x 30.2 mm double–row angular contact envelope is the ISO 3208, so SKF 3208 A-2Z, FAG 3208-B-2Z-TVH, NSK 3208B-2ZTN and NTN 5208ZZ share the same seat. Contact angle differs across the group: MRC’s 5200 series is 30°, FAG’s 32xx-B-TVH is 25° and the current 32xx-BD-XL is 30°, so a same–envelope part at a different angle is a related size rather than a like–for–like replacement. Searchable variants of this number are 5208MFF, 5208-MFF, 5208 MFF, 5208ZZ, 3208 and 3208-2Z. MRC bearings are part of SKF.