Dodge22211KDouble-Row Spherical Roller Bearing 55 x 100 x 25 mm, 1:12 Tapered Bore, H311 Adapter Sleeve Mount, W33 Lubrication Groove, C3 Clearance, 1 Pc

Product Description

What this part is

Dodge 22211K double-row spherical roller bearing, manufactured by FAG and carrying the FAG catalogue designation 22211ESK.C3 on the carton. Bore: 55 mm. Outside Diameter: 100 mm. Overall Width: 25 mm. Bore Type: Tapered, 1:12. Series: 222, ISO dimension series 22. Base Number: 22211. Number Of Rows: 2. Rolling Elements: symmetrical barrel rollers. Cage Type: Pressed, window-type. Cage Material: Steel. Closure Type: Open. Internal Clearance: C3. Precision Rating: ABEC 1 / P0. Item weight: 0.80 kg (1.76 lb). Dodge stock number: 422123. Manufactured in Germany.

Decoding the designation

The Dodge number 22211K gives the size and the tapered bore. The FAG designation 22211ESK.C3 carries the full specification. 222: double-row spherical roller bearing, dimension series 22. 11: bore code for a 55 mm bore. E: Schaeffler’s increased-capacity internal design, using longer symmetrical barrel rollers. S: annular lubrication groove around the outer ring with lubrication holes through it, which is FAG’s code for the feature the rest of the industry writes as W33. K: tapered bore, taper ratio 1:12. C3: radial internal clearance greater than Normal.

What these specs mean in practice

Two rows of barrel rollers run on one spherical outer raceway, so the inner ring and roller set swivel bodily inside the outer ring. That self-aligning action absorbs shaft deflection and housing misalignment while the bearing carries very heavy radial load and thrust in both directions. C3 clearance suits a heavy shaft interference fit and a warm-running housing, both of which take up clearance once the machine reaches temperature. Dynamic Load Rating: 129 kN. Static Load Rating: 130 kN. Fatigue Limit Load Cu: 17.3 kN. Limiting Speed: 9,000 rpm. Reference Speed: 4,650 rpm. Max temp: 200 °C. Min temp: -30 °C. On a double-row spherical roller bearing the static rating sitting at or above the dynamic rating is normal for the design.

Bore form and mounting

The 1:12 tapered bore is drawn up a matching taper, which gives direct control of internal clearance: the distance the bearing travels up the taper sets how far the inner ring expands and therefore the running clearance it finishes with. It also allows the bearing to be located anywhere along a length of plain round bar, with no machined seat. Adapter sleeve: H311, which seats the bearing on a 50 mm shaft, the sleeve wall taking up the difference to the 55 mm bore. H311 sleeves are normally supplied complete with a KM11 locknut and MB11 lockwasher. Withdrawal sleeve alternative: AHX311, on a stepped 55 mm seat, with the nut ordered separately. H-series sleeve dimensions follow ISO 2982-1 and DIN 5415, so H311 sleeves interchange across brands.

Relubrication

The annular groove around the outer ring and the radial holes through it carry grease from the housing straight into both roller rows, so the bearing can be relubricated in service without being dismantled.

Quantity and configuration

Unit Quantity: 1 Pc. One complete bearing: inner ring with both roller rows and cage, plus the outer ring. Spherical roller bearings are a non-separable assembly. Bare bearing.

Fitting notes

The sleeve goes onto the shaft first, the bearing onto the sleeve taper, and the assembly is then drawn up with the locknut while the reduction in radial internal clearance is measured with a feeler gauge across the unloaded roller row. The published clearance-reduction figure governs, rather than a torque value, because the taper converts small axial travel into large radial expansion. One lockwasher tab is then bent into the nut slot. The outer ring seats squarely in its housing and finds its own alignment before final tightening, which preserves the self-aligning capability. The housing lubrication port aligns with the outer-ring groove, and the path is purged before the first run. A plain shaft at h9 is adequate under an adapter sleeve.

Interchange guidance

Dimensionally equivalent tapered-bore 22211 bearings, specified to C3 clearance: FAG 22211-E1-XL-K, SKF 22211 EK, NSK 22211EAKE4, NTN 22211EAKW33, NTN-SNR 22211EAKW33, Timken 22211KEJW33, RHP 22211EKJW33 and Link-Belt 22211LBK. All mount on the same H311 adapter sleeve. The straight-bore 22211, 22211-E1 and 22211 E are a related size in the same 55 x 100 x 25 mm envelope, mounting directly onto a 55 mm shaft. Dodge is a Baldor and now an ABB brand. Carton and search variants: 22211K, 22211 K, 22211ESK.C3, 22211ESKC3, 22211-ES-K-C3, 22211 ESK C3, 22211EKC3, 22211KW33C3, 22211.