SNR22228VKF107Spherical Roller Bearing – Tapered Bore, 140 mm ID, 250 mm OD, 68 mm Width, Open, C3 Internal clearance

Product Description

What this part is

SNR 22228VKF107 double-row spherical roller bearing. Series: 22200. Base Number: 22228. Bore: 140 mm. Outside Diameter: 250 mm. Overall Width: 68 mm. Bore Type: Tapered 1:12. Closure Type: Open. Number Of Rows: 2. Rolling Elements: Spherical Roller. Cage Material: Brass. Cage Type: Machined, inner-ring centred. Internal Clearance: C3. Precision Rating: ABEC 1 / P0. Bearing Material: Chrome steel. Item Weight: 15.9 kg (35.0 lb). Country of Origin: France. Operating Temperature Range: −40 °C to 200 °C. Harmonization Code: 8482.30.00.80. Searchable variants of the number: 22228VKF107, 22228.V.K.F107, 22228-V-K-F107, 22228 V K F107, 22228KMBC3W33, 22228-K-MB-C3-W33.

Decoding the designation

Series: 22200 — the wide double-row spherical roller series. V: internal design modification. K: 1:12 tapered bore. F107: a combined execution code covering three features together — MB, a machined brass cage centred on the inner ring; B33, SNR’s code for the W33 lubrication feature; and J30, Internal Clearance C3. A machined brass cage carries higher roller loads and higher operating temperatures than a pressed cage and runs quietly under shock load. On a spherical roller bearing C3 is a normal, correct clearance selection.

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 140 mm figure is the small-end bore diameter. The matching adapter sleeve is an SNR H3128 — its tapered outside diameter is 140 mm and its cylindrical shaft seat is 125 mm, so the bearing mounts on a 125 mm plain shaft. The matching lock nut is a KM28 and the matching lock washer is an MB28. Driving the bearing up the sleeve taper sets the internal clearance by controlled radial expansion of the inner ring. The taper also seats directly on a 1:12 machined shaft seat.

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 22200 series is the wide section of the spherical roller range and carries a higher radial rating than the 21300 section on the same bore. 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, machined brass cage, W33 groove in the outer ring.

Interchange guidance

Same 140 x 250 x 68 mm envelope, 1:12 tapered bore, C3 clearance, machined brass cage and outer-ring lubrication groove: SKF 22228 CCK/W33 C3, FAG 22228-E1-K-MB-C3, NSK 22228CAMKE4C3, NTN 22228EAKW33C3, Timken 22228KEMW33C3. Load ratings and cage execution differ between makers. Related part: SNR H3128 adapter sleeve.