Torrington22213KMW33C3Double-Row Spherical Roller Bearing, 65 x 120 x 31 mm, 1:12 Tapered Bore, Machined Brass Cage, W33 Lubrication, C3 Clearance

Product Description

What this part is

A Torrington 22213 K.M.W33.C3 double-row spherical roller bearing measuring 65 mm bore x 120 mm outside diameter x 31 mm wide. It has a 1:12 tapered bore, a machined brass cage, a lubrication groove and three holes through the outer ring, and C3 radial internal clearance. Spherical roller bearings carry very high radial load plus axial load in both directions, and the spherical outer raceway lets the inner-ring assembly swivel so the bearing self-aligns to shaft deflection or housing misalignment.

Decoding the designation

222: double-row spherical roller bearing, ISO dimension series 22. 13: bore code, 13 x 5 = 65 mm bore. K: tapered bore, taper 1:12. M: machined brass cage. W33: circumferential lubrication groove around the outer ring outside diameter plus three radial lubrication holes through to the raceway. C3: radial internal clearance greater than normal.

Specifications

Manufacturer: Torrington (now Timken). Part Number: 22213KMW33C3. Base Number: 22213. Bearing Type: spherical roller bearing, double row, tapered bore. Series: 222, ISO dimension series 22. Bore (d): 65 mm, tapered 1:12. Outside Diameter (D): 120 mm. Width (B): 31 mm. Number of Rows: 2. Rolling Elements: spherical rollers, two rows. Cage Type: machined, roller-guided. Cage Material: machined brass. Internal Clearance: C3. Closure Type: open, both sides. Precision Class: ISO normal (ABEC 1 / P0). Basic Dynamic Load Rating (Cr): 149 kN. Basic Static Load Rating (C0r): 190 kN. Limiting Speed, Grease Lubrication: 3,200 rpm. Limiting Speed, Oil Lubrication: 4,200 rpm. Lubricant: grease or oil. Chamfer (rs min): 1.5 mm. Fillet (ras max): 1.5 mm. Shaft Abutment (da min): 74 mm. Housing Abutment (Da max): 111 mm. Axial Load Factors: e 0.24, Y1 2.79, Y2 4.15, Y0 2.73. Permissible Angular Misalignment: 1.5°. Relubrication: W33 groove and three holes in the outer ring. Bearing Material: through-hardened bearing steel. Item Weight: 3.40 lb. Maximum Temperature: 200 °C. Minimum Temperature: -40 °C. Design Units: metric. Harmonization Code: 8482.30. Matching Adapter Sleeve: H313, for a 55 mm shaft. Matching Withdrawal Sleeve: AH313. Locknut: KM13. Lockwasher: MB13.

What these specifications mean in practice

A 1:12 taper is a mounting system rather than a shaft fit. On a plain cylindrical shaft the bearing sits on an H313 adapter sleeve, which is what sets the interference, and is locked with a KM13 locknut and MB13 lockwasher; because the sleeve carries the shaft, the shaft seat under an H313 is 55 mm rather than 65 mm. The bearing also mounts directly on a machined 1:12 tapered shaft seat. C3 pairs with the tapered bore because drive-up deliberately consumes internal clearance, so a tapered-bore bearing starts looser than normal and still has usable operating clearance once the shaft and housing are hot. A machined brass cage is stiffer and more shock-tolerant than pressed steel, runs cooler, and copes with vibration and marginal lubrication, which is why it appears in screens, crushers, mill drives and conveyor drive ends. The W33 groove and its three radial holes take grease or oil from a housing port to the centre of both roller rows, which is what extends relubrication intervals. The axial load factors e 0.24, Y1 2.79, Y2 4.15 and Y0 2.73 are the figures used to resolve a combined load into an equivalent dynamic or static load.

Quantity and configuration

Unit Quantity: 1 Pc. One complete non-separable bearing: inner ring with the 1:12 tapered bore, two rows of spherical rollers, machined brass cage, and outer ring with the lubrication groove and three holes. The H313 adapter sleeve, AH313 withdrawal sleeve, KM13 locknut and MB13 lockwasher are separate part numbers.

Interchange guidance

Torrington was absorbed into Timken, so the current-brand equivalent is a Timken 22213 KEMW33C3 or 22213 KEMBW33C3, both tapered-bore brass-cage 22213s with the lubrication groove and holes. The 65 x 120 x 31 mm 222-series envelope is industry-standard and the tapered-bore version takes the same H313 sleeve across every brand. Other brass-cage equivalents: SKF 22213 CAK/C3W33, FAG 22213-E1A-K-M-C3 and 22213 K.MB.C3, NSK 22213 CAMKE4C3, NTN and NTN-SNR 22213 EMKW33C3, Koyo 22213RKW33C3. Steel-caged tapered-bore versions in the same seat: Timken 22213 KEJW33C3, SKF 22213 CCK/C3W33, NSK 22213 CDKE4C3, NTN 22213EAKW33C3. The 22213MW33C3 is the straight-bore form of the same bearing.