HyattSpherical Roller Bearing 100x180x46mm Tapered Bore 1:12 Brass Cage C3 Clearance W33 Lube Groove

Product Description

What this part is

A double-row spherical roller bearing, 100 mm bore x 180 mm OD x 46 mm wide, with a 1:12 tapered bore, a machined brass cage, C3 internal clearance and a W33 lubrication groove with three radial feed holes in the outer ring. Spherical rollers are the workhorse of heavy, misaligning applications: crushers, screens, conveyor pulleys, fans, mill and kiln drives, and any long shaft where the two housings will never be perfectly in line.

Decoding the designation

22220 — ISO 222 series double-row spherical roller bearing, 100 x 180 x 46 mm. K — 1:12 tapered bore. MB — machined brass cage. C3 — internal clearance greater than normal. W33 — lubrication groove in the outer ring plus three feed holes.

What these specs mean in practice

The two rows of barrel rollers run on a common spherical outer raceway, so the bearing accommodates static and dynamic shaft misalignment without loading the raceways in a line. Being double row, it takes thrust in both directions as well as very high radial load. C3 clearance runs looser than normal at rest, which is what you want where the inner ring will grow relative to the outer — hot shafts, heavy interference fits, or a tapered bore driven up hard onto a sleeve, since driving the bearing further up the taper progressively reduces the running clearance. The machined brass cage handles higher speeds, shock and higher temperatures than a pressed steel cage, and changes the load rating relative to a CC-cage version of the same number. W33 lets grease or oil reach the rollers directly from the housing rather than relying on what was packed in at assembly.

Published specifications

Bore: 100 mm, tapered 1:12. Outside diameter: 180 mm. Width: 46 mm. Bearing type: double-row spherical roller, self-aligning. Cage: machined brass (MB). Internal clearance: C3, greater than normal. Relubrication: W33 groove plus three outer-ring holes. Rows: 2. Closure: open. Basic dynamic load rating: 425 kN. Basic static load rating: 530 kN. Limiting speed: 3600 rpm. Item weight: 10.9 lbs.

Quantity and configuration

One bearing. The adapter sleeve is not included. A 22220K normally mounts on an H320 adapter sleeve, which seats it on a 90 mm plain shaft; the sleeve, its lock nut and lock washer are separate items. If the shaft is already machined with a 1:12 taper the bearing can be driven straight onto it and no sleeve is needed.

Interchange guidance

Equivalent parts are 22220K spherical roller bearings with a brass cage, C3 clearance and W33 grooving from other makers — for example 22220-K-MB-C3-W33 in the FAG scheme, 22220CAKW33/C3 in the SKF scheme and 22220CAMKE4C3 in the NSK scheme (NSK E4 = W33). Related but NOT interchangeable: a straight-bore 22220 (no K) needs no sleeve and mounts differently; a CC pressed-steel-cage version carries a different rating; and a normal-clearance (CN) or C4 version changes the mounted clearance. The cage code and clearance are not cosmetic.