TORRINGTON22213MC4W33Spherical Roller Bearing – Straight Bore, 65 mm ID, 120 mm OD, 31 mm Width, Open, Machined Brass Cage, C4 Clearance, W33 Lubrication Groove

Product Description

What this part is

Torrington 22213 M C4 W33 double-row spherical roller bearing, 65 x 120 x 31 mm. Manufacturer: Torrington, now part of Timken. Manufacturer Part Number: 22213MC4W33. Base Number: 22213. Series: 22200. Bearing Type: Spherical Roller Bearing. Number of Rows: 2. Rolling Elements: Spherical Rollers. Design Units: Metric. Bore: 65 mm. Outside Diameter: 120 mm. Overall Width: 31 mm. Bore Type: Straight. Closure Type: Open. Cage Type: Machined. Cage Material: Brass. Bearing Material: Bearing Steel. Internal Clearance: C4. Precision Rating: ABEC 1 / P0. Maximum Permissible Misalignment: 2°. Unit Quantity: 1 Pc.

Decoding the designation

222 is the dimension series for a double-row spherical roller bearing. M is the cage code: a machined brass cage. C4 is the radial internal clearance group, wider than both CN and C3. W33 is the lubrication feature: an annular groove machined into the outer ring outside diameter with three radial holes drilled through to the roller path. The carton also carries Torrington’s house designation, 65SD22 W33 F3 BR. Searchable forms of the number are 22213MC4W33, 22213 M C4 W33, 22213-M-C4-W33 and 65SD22W33F3BR.

What these specs mean in practice

Dynamic Load Rating: 198 kN / 44,500 lbf. Static Load Rating: 216 kN / 48,500 lbf. Limiting Speed: 5,300 rpm. Item Weight: 3.42 lb (1.55 kg). Maximum Temperature: 200°C. Minimum Temperature: −30°C. Two rows of spherical rollers running in a common concave outer raceway carry high radial load and take thrust in both directions, and the roller set swivels within the outer ring, giving 2° of permissible shaft-to-housing misalignment without edge loading. On a double-row spherical roller bearing the static rating sits above the dynamic rating, which is the normal relationship for this type. A machined brass cage is stiffer and more tolerant of high temperature, shock load and marginal lubrication than a pressed steel cage, and it carries acceleration and deceleration loads that would flex a sheet cage. The C4 clearance group leaves more room in the mounted bearing than CN or C3, which suits a heavy interference fit on the shaft, a hot inner ring, or a large temperature difference across the rings. Harmonization Code: 8482.30.00.

Lubrication feature

Lubricant: Grease or oil. Relubrication: Yes, through the W33 provision. The groove distributes lubricant circumferentially around the outer ring and the three radial holes carry it inward to the rolling elements, so the roller path is fed from the outside diameter rather than through the ring faces. The same passages serve a grease gun, a single-point lubricator, a centralised grease line, a circulating-oil system or oil mist.

Bore form and mounting

Bore Type: Straight. The 65 mm cylindrical bore mounts directly on the shaft journal, and the mounted clearance follows from the shaft and housing fits.

Quantity and configuration

Unit Quantity: 1 Pc. One complete bearing: inner ring, two rows of rollers in machined brass cages, and the outer ring with the W33 groove and holes.

Interchange guidance

Cross-Reference 1: SKF 22213 E/C4. Cross-Reference 2: FAG 22213-E1-M-C4. Cross-Reference 3: Timken 22213EM-C4. All three sit on the same 65 x 120 x 31 mm envelope with a cylindrical bore and C4 clearance, and all three are reinforced E executions carrying higher load ratings than the figures published above. Take the rating from the designation actually fitted. A pressed steel cage version of this envelope is a related execution with different speed and temperature behaviour.