FAG22211-E1-K-W33Spherical Roller Bearing – 55 mm Tapered Bore, 100 mm OD, 25 mm Width, W33 Lubrication Groove

Product Description

What this part is

FAG 22211-E1-K-W33 double-row spherical roller bearing. Bore: 55 mm. Outside Diameter: 100 mm. Width: 25 mm. Bore Type: Tapered 1:12. Number Of Rows: 2. Rolling Elements: Spherical rollers. Series: 222. Base Number: 22211. Design Units: Metric. Bearing Material: Chrome steel. Internal Clearance: CN. Unit Quantity: 1 Pc. GTIN: 4026677804969.

Decoding the designation

22211 — FAG’s number for the 222 dimension series, 55 x 100 x 25 mm.

E1 — reinforced execution, carrying a larger roller complement than the original 222 design.

K — tapered bore, 1:12 taper.

W33 — annular groove around the outer ring outside diameter with three radial feed holes.

What these specs mean in practice

Two roller rows run on a common spherical raceway in the outer ring, so the inner ring and roller assembly swivel relative to the outer ring. Permissible misalignment on the 222 series is 1.5°, which absorbs shaft deflection and housing bore misalignment that would edge-load a cylindrical or deep groove bearing. Both rows share radial load and the type carries thrust in either direction. Internal Clearance: CN, the normal radial clearance group, which suits a straight interference fit and moderate temperature difference across the rings.

Mounting data

The 1:12 tapered bore seats on an adapter sleeve. Adapter Sleeve: H311, whose tapered outside diameter is 55 mm and whose shaft seat is 50 mm. The sleeve is secured with a KM11 locknut and an MB11 lockwasher. Driving the bearing further up the taper reduces the radial internal clearance, which is how the fit is set on a plain shaft. Lubricant: grease or oil. The W33 groove and its three radial holes take lubricant from the housing lubrication port to the rolling elements.

Quantity and configuration

Unit Quantity: 1 Pc. Open execution on both faces.

Interchange guidance

The 22211 K W33 envelope is an ISO boundary size, so equivalent executions from other makers share the same 55 x 100 x 25 mm envelope and the same 1:12 tapered bore. Cross-References: SKF 22211 EK, NSK 22211EAKE4, Timken 22211KEJW33. Searchable variants of the manufacturer part number: 22211E1K, 22211-E1-K, 22211 E1 K W33, 22211EK.