OCM22205CAW33Spherical Roller Bearing 25x52x18 mm Straight Bore Brass Cage W33

Product Description

What this part is

22205 CA W33 double-row spherical roller bearing. Straight cylindrical bore, 25 mm bore, 52 mm outside diameter, 18 mm width. Open on both faces, machined brass cage, lubrication groove and three radial feed holes in the outer ring.

Decoding the designation

22205 is the ISO basic number: 222 dimension series, bore code 05 for a 25 mm bore. CA denotes the machined brass cage design with the rollers guided by an inner-ring centre rib. W33 is the outer-ring feature set: an annular lubrication groove around the outside diameter with three radial holes feeding grease or oil directly into the roller path. No K appears in the designation, so the bore is straight rather than 1:12 tapered. No clearance suffix appears, so the internal clearance is normal, CN.

What these specs mean in practice

Two rows of barrel rollers run on a common spherical outer raceway, so the bearing accommodates static and dynamic misalignment between the shaft and housing seats while carrying heavy radial load and thrust in both axial directions. A machined brass CA cage is stronger and more tolerant of high temperature and marginal lubrication than a pressed steel cage, and it accepts higher speeds under load than a pressed cage of the same envelope. W33 makes the bearing relubricatable in service through the housing, which suits sealed-in positions where the bearing cannot be reached to be repacked.

Bore form

Straight bore. The bearing mounts directly on a 25 mm shaft seat with an interference fit. The tapered-bore counterpart in this size is the 22205 K, which seats on an H305 adapter sleeve with a KM05 locknut and MB05 washer.

Quantity and configuration

Sold as 1 Pc. Complete bearing: inner ring, two roller rows with the brass cage, and the grooved outer ring.

Interchange guidance

Dimensionally interchangeable with any 22205 in the 25 x 52 x 18 mm envelope. Cage design is the variable that matters on a substitution: a CC part carries a pressed steel cage and an E or E1A part a reinforced design, each with its own load rating and speed limit. A plain 22205 with no W33 has a solid outer ring with no groove or feed holes, so a housing arranged to relubricate through the outer ring needs the W33 version.