SKFDouble-Row Spherical Roller Bearing 45 x 85 x 23 mm, 1:12 Tapered Bore, C3 Clearance, W33 Lubrication Groove

Product Description

What this part is

This is an SKF 22209 CCK/C3 W33 double-row spherical roller bearing with a 45 mm tapered bore, 85 mm outside diameter and 23 mm width. Two rows of barrel-shaped rollers run on a common spherical raceway in the outer ring, so the shaft can swivel relative to the housing and absorb misalignment while under load.

Decoding the designation

The 222 prefix is the double-row spherical roller family and the 09 bore code gives 45 mm. CC specifies a pressed steel window cage. K specifies a 1:12 tapered bore. C3 is a radial internal clearance greater than normal. W33 means the outer ring carries a circumferential lubrication groove and three radial lubrication holes into it.

Bore taper and mounting hardware

Adapter sleeve H309 fits this bearing and is a separate part, not included. The sleeve seats on a 40 mm plain shaft — one bore-code step below the bearing bore — and is supplied with a KM9 locknut and an MB9 lockwasher.

What these specs mean in practice

The double row carries very high radial load and takes axial load in both directions. The 1:12 taper makes running clearance adjustable at assembly: driving the inner ring further up the taper expands it and reduces clearance, so the fitter sets the final figure. Starting from C3 rather than normal clearance leaves more margin for that drive-up and for a shaft that runs hotter than its housing.

Quantity and configuration

Bearing only, 1 Pc. Supplied without adapter sleeve H309 and without locknut or lockwasher.

Fitting notes

The bearing goes up the sleeve taper until the specified clearance reduction is reached, checked with a feeler gauge across the unloaded roller row or by measured drive-up distance. The housing lubrication port is aligned with the outer ring W33 groove so the relubrication passage stays open.

Interchange guidance

Closest tapered-bore C3 bearings on the 45 x 85 x 23 mm size: Timken 22209KEJW33C3 (W33 groove and holes), NSK 22209EAKE4C3 (E4 lubrication groove and holes) and FAG 22209-E1-XL-K-C3 (lubrication groove not verified). The straight-bore 22209 CC/C3W33 shares the envelope but mounts directly on a cylindrical seat with no sleeve, which makes it a related size rather than a substitute.