SKF22220 CC/C4W33Double Row Spherical Roller Bearing 100 x 180 x 46 mm, Cylindrical Bore, W33 Lube Groove, Pressed Steel Cage, C4

Product Description

What this part is:

A double-row spherical roller bearing with a cylindrical bore, 100 mm bore × 180 mm outside diameter × 46 mm width. Two rows of barrel-profile rollers run on a common spherical outer raceway, so the inner ring and roller set swivel within the outer ring. The bearing carries heavy radial load, takes thrust in both axial directions, and accommodates static misalignment and running shaft deflection.

Decoding the designation:

• 222 — double-row spherical roller dimension series.
• 20 — bore code, 100 mm.
• CC — pressed steel window cage with an inner-ring guide.
• C4 — radial internal clearance greater than C3.
• W33 — lubrication groove around the outer ring with three radial lubrication holes.
• No K suffix — cylindrical bore.

What these specs mean in practice:

The spherical outer raceway is what makes the bearing self-aligning, and the double row is what gives it thrust capacity in both directions rather than one. C4 is the widest of the common clearance classes, one step beyond C3. That extra internal room suits a heavy interference fit on the shaft, a large temperature gradient across the bearing, or a position where the shaft is expected to deflect appreciably under load. The trade is that a lightly loaded C4 bearing runs with more internal play, so it is specified where the loading and the thermal conditions justify it rather than as a general substitute. The W33 groove and three holes feed lubricant to the centre of the two roller rows from a housing port, which is the arrangement used where the bearing is relubricated on a schedule.

Published ratings and mounting data:

• Bore: 100 mm (3.937 in), cylindrical
• Outside diameter: 180 mm (7.087 in)
• Width: 46 mm (1.811 in)
• Basic dynamic radial load rating C: 433 kN
• Basic static radial load rating C0: 490 kN
• Rows: 2
• Rolling element: spherical (barrel profile) rollers
• Cage: pressed steel, window type
• Radial internal clearance: C4
• Lubrication feature: W33, outer-ring groove and three radial holes
• Closure: open, both faces
• Axial load capacity: both directions

Quantity and configuration:

Sale unit 1 Pc. Bearing only.

Fitting notes:

The cylindrical bore seats directly on the shaft, the interference set by the shaft tolerance rather than by drive-up. Where the W33 holes are used, the housing lube port aligns with the groove, which is continuous around the ring and so requires no rotational indexing.

Interchange guidance:

The ISO base number is 22220. A 22220 CC/C3W33 is the same bearing one clearance class tighter and is a related size rather than an interchange, since clearance class governs mounted preload and running temperature. A 22220 CCK/W33 is a related size too, its 1:12 tapered bore calling for a tapered journal or an adapter sleeve instead of a plain shaft seat.