SNRDouble-Row Spherical Roller Bearing – 50 mm Tapered Bore, 90 mm OD, 23 mm Width, W33 Lubrication Groove, C3 Clearance, H310 Sleeve Mounting

Product Description

What this part is

SNR 22210EKB33J30 double-row spherical roller bearing. Series: 22200. Base Number: 22210. Bore: 50 mm. Outside Diameter: 90 mm. Overall Width: 23 mm. Bore Type: Tapered 1:12. Closure Type: Open. Number Of Rows: 2. Rolling Elements: Spherical Roller. Cage Type: Pressed. Cage Material: Steel. Internal Clearance: C3. Precision Rating: ABEC 1 / P0. Bearing Material: Chrome steel. Country of Origin: Italy. Harmonization Code: 8482.30.00.40. Searchable variants of the number: 22210EKB33J30, 22210.E.K.B33.J30, 22210-E-K-B33-J30, 22210 E K B33 J30, 22210EKW33C3, 22210EKJ W33 C3.

Decoding the designation

Series: 22200 — the wide double-row spherical roller series. E: the high-capacity execution with an enlarged roller complement. K: 1:12 tapered bore. B33: SNR’s code for the W33 lubrication feature. J30: Internal Clearance C3, one step wider than normal.

Load ratings

Dynamic Load Rating: 130 kN (29,225 lbf). Static Load Rating: 124 kN (27,876 lbf). Operating Temperature Range: −40 °C to 200 °C.

The W33 lubrication feature

B33 is an annular groove machined around the outside diameter of the outer ring, with three radial holes drilled through to the roller path. The groove distributes lubricant circumferentially around the outer ring and the three holes carry it inward to the rolling elements. Lubricant: grease or oil — the same passages serve a grease gun, a single-point lubricator, a centralised grease system, an oil-mist feed or a circulating-oil system.

Bore form and adapter sleeve

The bore is tapered 1:12 and the 50 mm figure is the small-end bore diameter. The matching adapter sleeve is an SNR H310 — its tapered outside diameter is 50 mm and its cylindrical shaft seat is 45 mm, so the bearing mounts on a 45 mm plain shaft. The matching lock nut is a KM10 and the matching lock washer is an MB10. Driving the bearing up the sleeve taper sets the internal clearance by controlled radial expansion of the inner ring.

What these specs mean in practice

Two rows of barrel rollers run on a common spherical raceway in the outer ring, so the inner ring and roller set swivel inside the outer ring. Permissible Misalignment: 0.5° at normal load, which absorbs shaft deflection and housing bore misalignment. The double-row arrangement takes axial load in both directions alongside the radial load. The C3 class opens the radial internal clearance beyond CN, which suits the tight interference fit produced by sleeve mounting and a working temperature difference between inner and outer ring.

Quantity and configuration

Unit Quantity: 1 Pc. Single bearing, open on both faces, tapered bore, W33 groove in the outer ring.

Interchange guidance

Same 50 x 90 x 23 mm envelope with a 1:12 tapered bore: SKF 22210 EK, FAG 22210-E1-K, NTN 22210EAK, NSK 22210EAKE4, Koyo 22210RHRK, Timken 22210KJ. Load ratings and cage execution differ between makers. Related part: SNR H310 adapter sleeve.