RHP22228HLW33Double Row Spherical Roller Bearing – Straight Bore, 140 mm ID, 250 mm OD, 68 mm Width, Open, CN Internal Clearance, W33 Lubrication Groove and Three Holes

Product Description

What this part is

RHP 22228HLW33 is a double-row spherical roller bearing, 140 mm bore, 250 mm outside diameter, 68 mm width, with a straight cylindrical bore and relubrication features in the outer ring.

Decoding the designation

22228 places the bearing in the 222 dimension series at a 140 mm bore. There is no K in the designation, so the bore is straight rather than 1:12 tapered. W33 denotes a lubrication groove machined around the outer ring with three radial feed holes into the raceway. The carton also carries the forms 22228J, 22228C, 22228CC, 22228CJ and 22228CCJ; the CC and CCJ codes confirm pressed steel cages.

What these specs mean in practice

A double-row spherical roller bearing carries very heavy radial load and takes thrust in both directions, and its spherical outer raceway accommodates up to 1.5° of static misalignment between shaft and housing. That tolerance for misalignment is the reason the type dominates long shafts, conveyor pulleys, fans, crushers and gearbox inputs where perfect seat alignment cannot be guaranteed. Pressed steel cages keep the design light and permit the full complement of rollers that produces the high dynamic rating. The W33 groove and holes allow grease or oil to be fed directly to the rolling elements from the housing, which is what makes scheduled relubrication practical without stripping the assembly.

Bore form

Straight cylindrical bore, mounted directly onto a shaft seat. The tapered-bore variants of this size, designated 22228 K, are a different mounting method requiring an H3128 adapter sleeve.

Quantity and configuration

One bearing. Two rows of spherical rollers on a common spherical outer raceway, open on both faces.

Fitting notes

CN is normal internal clearance, appropriate to a shaft-and-housing fit made to standard tolerances. Radial clearance reduces as the interference fit takes up on mounting, so the finished running clearance follows from the seat tolerances chosen.

Interchange guidance

SKF 22228 CC/W33, FAG 22228-E1-XL and NSK 22228CAMKE4 are same-size equivalents at normal clearance with the lubrication groove and holes. The 22228 K and CCK forms share the envelope but have a 1:12 tapered bore for adapter-sleeve mounting, and C3 forms carry greater clearance, so both are related sizes rather than substitutions.