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Gearmotors: What They Are and How to Size a Replacement
Many industrial loads need torque an electric motor can’t deliver on its own, at a
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Double-row spherical roller bearing, 55 mm straight bore, 100 mm OD, 25 mm wide, C3 clearance, W33 lubrication groove, high-capacity design. RHP 22211HLW33C3.
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| MFR / Brand | RHP |
|---|---|
| MPN | 22211HLW33C3 |
| Model | 22211 HL W33 C3 22211MB |
| Bearing Type | Spherical Roller Bearing, Open |
| ID | 55 mm |
| OD | 100 mm |
| Width | 25 mm |
| Series | 22200 |
|---|---|
| Material | Bearing Steel |
| Base Number | 22211 |
| Industry Terms | Spherical roller bearing; self-aligning roller bearing; double row barrel roller bearing; SRB; 222 series; W33 spherical roller; high capacity spherical roller; C3 clearance roller bearing |
| Common Misspellings | 22211HLW33 C3; 22211-HLW33C3; 22211HL W33C3; 2211HLW33C3; 22211HLW3C3; RHP 22211-HL; 22211HIW33C3 |
| Application Types | Conveyor pulleys and head shafts; gearboxes; fans and blowers; pumps; mixers and agitators; crushers and vibrating screens; kiln and mill drives; general heavy industrial plant |
| Bore Shaft Size | 55 mm |
| Mpn Variants | 22211HLW33C3; 22211-HL-W33-C3; 22211 HL W33 C3; 22211HLW33; 22211HL; 22211W33C3; 22211 |
| Manufacturer Status | NSK acquired RHP in 1990; traded as NSK-RHP and reverted to plain NSK in November 2000. RHP survives as an NSK Group brand. Closest current equivalent: NSK 22211EAE4C3. |
| Compatible With Replaces | Related size, NOT an interchange: 22211HLKW33C3 and any other 22211K share the same 55 x 100 x 25 mm envelope but have a 1:12 tapered bore and require an H311 adapter sleeve on a 50 mm shaft. A straight-bore bearing will not fit a sleeve. 22211HLW33 without a clearance suffix is the same bearing in Normal clearance. |
| Rolling Elements | Spherical Roller |
| Number Of Rows | 2 |
| Bore Type | Straight |
| Harmonization Code | 84823000 |
| Internal Clearance | C3 |
| Part Number | 22211HLW33C3 |
| Lubricant | Grease or oil |
| Closure Type | Open |
| Cross Reference 1 | NSK 22211EAE4C3 - current NSK equivalent (E4 = W33) |
|---|---|
| Cross Reference 2 | Timken 22211EJW33C3 - EJW33 design |
| Cross Reference 3 | SKF 22211 E/C3 - E design |
| Cross Reference 4 | FAG 22211-E1-XL - E1 design, specify C3 |
| Cross Reference 5 | NTN 22211EAW33 - E design, specify C3 |
| Cross Reference 6 | 22211MB - machined brass cage |
| Cross Reference 7 | Torrington 22211W33 - legacy US designation |
RHP 22211HLW33C3 double-row spherical roller bearing, 55 mm bore x 100 mm outside diameter x 25 mm wide, ISO 222 dimension series, with a straight cylindrical bore. High-capacity design, annular lubrication groove with three holes through the outer ring, C3 internal clearance. Unit Quantity: 1 Pc.
222 — double-row spherical roller bearing, dimension series 22.
11 — bore code for a 55 mm bore.
HL — RHP high-capacity design code.
W33 — annular lubrication groove around the outer ring plus three lubrication holes through it.
C3 — radial internal clearance greater than Normal.
Bore Diameter: 55 mm. Outside Diameter: 100 mm. Overall Width: 25 mm. Rolling Elements: Spherical roller. Number Of Rows: 2. Bore Type: Straight. Closure Type: Open. Internal Clearance: C3. Series: 222. Lubricant: grease or oil, fed through the outer-ring groove and holes.
The bore is straight and cylindrical; there is no K in the designation, so the bearing seats directly on a 55 mm shaft. The bearing is a non-separable assembly: inner ring with both roller rows and cage, plus the outer ring.
RHP became part of NSK in 1990 and the closest current equivalent is NSK 22211EAE4C3. Cross-references with the same 55 x 100 x 25 mm straight-bore envelope: Timken 22211EJW33C3, SKF 22211 E/C3, FAG 22211-E1-XL, NTN 22211EAW33, Torrington 22211W33 (legacy US designation). 22211MB is the same envelope with a machined brass, inner-ring-guided cage. The 22211HLKW33C3 and other 22211K bearings have a 1:12 tapered bore and take an H311 adapter sleeve on a 50 mm shaft. MPN Variants: 22211HLW33C3, 22211-HL-W33-C3, 22211 HL W33 C3, 22211HLW33, 22211HL, 22211W33C3, 22211.
55 mm bore, 100 mm outside diameter and 25 mm width.
No. It has a straight cylindrical bore; the tapered-bore version carries a K in the designation.
W33 is an annular lubrication groove with three holes in the outer ring; C3 is radial internal clearance greater than Normal.
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