SKF22228-CY-W33Spherical Roller Bearing – 140 mm ID, 250 mm OD, 68 mm Width, Straight Bore, Open, W33 Lubrication Groove, CN Internal Clearance, Pressed Brass Window Cage

Product Description

What this part is

SKF 22228-CY-W33 double-row spherical roller bearing. Series 222. Bore: 140 mm. Outside diameter: 250 mm. Width: 68 mm. Two rows of barrel rollers running on a common spherical outer raceway, so the bearing accommodates shaft misalignment and carries thrust in both directions as well as radial load.

Decoding the designation

W33: an annular lubrication groove in the outer ring with three radial feed holes, allowing relubrication through the housing without dismantling. CY: pressed brass window cage. Bore form: straight, 140 mm, mounted directly on the shaft. Internal clearance: CN, the normal class. Punctuation variants in circulation: 22228 CY/W33, 22228CYW33, 22228-C-Y-W33, 22228 CCY.

What these specs mean in practice

Basic dynamic load rating: 710 kN (159 600 lbf). Basic static load rating: 900 kN (202 300 lbf). On a double-row spherical roller bearing the static rating sits above the dynamic rating — that is the normal relationship for the type. Fatigue load limit: 86.5 kN. Reference speed: 2 400 rpm. Limiting speed: 3 200 rpm. The self-aligning geometry tolerates shaft deflection and housing misalignment that would shorten the life of a cylindrical or tapered roller bearing in the same envelope.

Quantity and configuration

One bearing, complete: outer ring, inner ring, two roller rows and cages. Open on both faces.

Fitting notes

Straight bore, pressed onto a 140 mm shaft seat. The W33 groove and holes line up with a housing lubrication port. Operating temperature range: -30 °C to 200 °C. Weight: 30.80 lb (14.0 kg).

Application types

Vibrating screens, crushers, conveyor pulleys, fans, gearboxes, paper machinery and pillow-block plummer blocks, where shaft deflection and heavy shock radial loads are routine.

Interchange guidance

Same-envelope equivalents: Timken 22228EJW33, FAG 22228-E1, NSK 22228EAE4, NTN 22228EMD1, Koyo 22228RZW33. Related sizes within the 22228 range: 22228 CCK/W33 (tapered 1:12 bore for an adapter sleeve), 22228 CC/C3W33 and 22228 CC/C4W33 (wider running clearances).