SKF22209CCJC4W33Double-Row Spherical Roller Bearing, 45 x 85 x 23 mm, Straight Bore, C4 Extra Internal Clearance, W33 Lubrication Groove

Product Description

What this part is

A double-row spherical roller bearing on the 22209 envelope — 45 mm bore, 85 mm outside diameter, 23 mm width. Both rows of barrel rollers run against a single spherical raceway ground into the outer ring, so the inner ring and roller assembly can swivel inside the outer ring. That gives very high radial capacity together with tolerance of shaft deflection and housing seats that are not coaxial. This particular bearing is built with C4 internal clearance, which is wider than the more common C3.

Decoding the designation

222 – ISO dimension series for spherical roller bearings.
09 – bore reference number; 9 × 5 = 45 mm bore.
CC – single-piece steel window cage with an inner-ring centre guide rib. The same cage appears as CJ and CCJ in Torrington and Fafnir lineage nomenclature.
C4 – radial internal clearance one group wider than C3, which is itself wider than normal.
W33 – annular lubrication groove around the outer ring with three radial holes into the raceway.

What these specs mean in practice

C4 is the reason to buy this specific bearing rather than the C3 or normal-clearance version, and it is not a general-purpose upgrade. Clearance gets consumed in service by two things: a heavy interference fit on the shaft, which expands the inner ring, and a hot inner ring relative to a cooler housing, which expands it further. Where both effects are large — kiln and dryer rolls, hot fans, heavily loaded mill and crusher shafts, bearings mounted on a driven taper with a big drive-up — a normal or C3 bearing arrives at operating temperature with no clearance left and preloads itself. C4 leaves headroom for that. Fit C4 into a cool, lightly fitted application and you get the opposite problem: a slack bearing whose rollers skid through the unloaded arc, which scuffs raceways and can be noisy. Match the clearance class to whatever came out of the machine.

There is no K in the designation, so the bore is cylindrical: press it onto a plain 45 mm shaft seat, no adapter sleeve and no drive-up measurement needed. The W33 groove and its three holes give a relubrication path straight through the outer ring, feeding both roller rows evenly, provided the housing has a lube port aligned on the groove.

Published ratings and mounting data

Bore: 45 mm, cylindrical
Outside diameter: 85 mm
Width: 23 mm
Rows: 2, barrel rollers
Basic dynamic radial load rating C: 104 kN
Basic static radial load rating C0: 100 kN
Reference speed: 7 500 rpm — limiting speed 10 000 rpm
Internal clearance: C4 (wider than C3)
Cage: single-piece steel window cage
Closure: open
Mass: approximately 0.57 kg

Quantity and configuration

Priced and supplied as one bearing.

Interchange guidance

Direct C4 equivalents on the same envelope: SKF 22209 E/C4, FAG 22209-E1-XL-C4, NSK 22209EAE4C4, NTN 22209BD1C4, Koyo 22209RHRW33C4, Timken and Torrington 22209EJW33C4, Steyr 22209-C-C4-W33. The C3 and normal-clearance versions — 22209 CC/C3W33, 22209 CC/W33, 22209 E — fit the identical seats and carry the identical load ratings, and are carried here as cross-references; the difference is internal clearance, so only substitute if your application was designed around that class. Tapered-bore 22209 K and CCK variants share the 45 x 85 x 23 envelope but have a 1:12 bore, so they are a dimensional cross-reference only, not a mounting substitute.