RHP22224W33C3Double-Row Spherical Roller Bearing – Straight Bore, 120 mm ID, 215 mm OD, 58 mm Width, Open, W33 Lubrication Groove, C3 Internal Clearance

Product Description

What this part is

RHP 22224 W33 C3 double-row spherical roller bearing. Bore: 120 mm. Outside Diameter: 215 mm. Overall Width: 58 mm. Number Of Rows: 2. Rolling Elements: Spherical rollers. Bore Type: Straight cylindrical. Closure Type: Open both faces. Internal Clearance: C3. Cage Material: Pressed steel. Cage Type: Pressed. Bearing Material: Through-hardened bearing steel. Series: 222, the medium width series. RHP is an NSK brand.

Decoding the designation

Reading 22224-J-W33-C3: 222 is the double-row spherical roller medium width series, the bore code 24 multiplied by 5 gives the 120 mm bore, J is the pressed cage in the RHP scheme, W33 is the lubrication groove in the outer ring with three radial feed holes, and C3 is a radial internal clearance greater than normal. There is no K, so the bore is straight cylindrical. The carton also carries the form 22224 CJ C3 W33.

What these specs mean in practice

The outer raceway is a single sphere centred on the bearing axis, so the inner ring, rollers and cage assembly swivel inside it. That accommodates static and dynamic shaft misalignment without edge-loading the raceways, and two rows of barrel rollers carry heavy radial load with thrust in both directions. C3 clearance suits a press-fit inner ring, a warm-running shaft or a temperature gradient across the bearing, each of which consumes internal clearance in service.

The W33 lubrication feature

Relubrication: W33, an annular groove machined into the outer ring outside diameter with three radial holes drilled inward to the roller path. Lubricant: grease or oil. The groove distributes lubricant circumferentially around the outer ring and the three holes carry it inward at the centre of the roller path rather than at one edge, so both roller rows are fed evenly. The same passages serve a grease gun, an automatic single-point lubricator, a centralised grease system, or a circulating-oil or oil-mist feed.

Bore form and mounting

Bore Type: Straight cylindrical. The bearing mounts directly on the shaft seat. A tapered-bore 22224K is a different part that seats on an H3124 adapter sleeve, so the two are not interchangeable.

Quantity and configuration

Unit Quantity: 1 Pc. One complete bearing, inner ring, two roller rows with cages, and outer ring.

Interchange guidance

The straight bore, W33 groove and C3 clearance together make the interchange point. Same envelope and clearance class: NSK 22224 EAE4C3, SKF 22224 E/C3, FAG 22224-E1-XL-C3, Timken 22224EJW33C3, Torrington 22224W33C3, Koyo 22224RHRW33C3, NTN 22224EAD1C3 and SNR 22224EAW33J30. The designation is also written 22224W33C3, 22224 W33 C3 and 22224-J-W33-C3. Related sizes that are not interchanges: 22224K on a tapered 1:12 bore, a plain 22224 without the W33 groove, and any C2 or C4 clearance variant.