RHP22224JDouble-Row Spherical Roller Bearing – Straight Bore, 120 mm ID, 215 mm OD, 58 mm Width, Open, CN Internal Clearance

Product Description

What this part is

RHP 22224J 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: CN, normal. 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: 222 is the double-row spherical roller medium width series, the bore code 24 multiplied by 5 gives the 120 mm bore, and J is the pressed cage in the RHP scheme. There is no K in the designation, so the bore is straight cylindrical rather than tapered. There is no W33, so the outer ring is plain, without a lubrication groove. There is no clearance suffix, so the radial internal clearance is the normal CN class. The carton also carries the form 22224 CJ.

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 shaft misalignment and shaft deflection under load without edge-loading the raceways, which is why a spherical roller is the standard choice for long shafts on two widely spaced supports. Two rows of barrel rollers carry heavy radial load and take thrust in both directions.

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.

Internal clearance

Internal Clearance: CN, the normal radial clearance class. CN suits a bearing running at ordinary temperature with a normal interference fit on the shaft, where little clearance is consumed by ring expansion. A C3 variant of the same bearing is a different clearance class and a related part rather than a substitution.

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, plain outer ring and CN clearance together make the interchange point. The designation is also written 22224J, 22224-J, 22224 J and 22224 CJ. Related sizes that are not interchanges: 22224K on a tapered 1:12 bore, 22224 W33 with the outer-ring lubrication groove, and any C3 or C4 clearance variant.