22206EAW33 bearing: complete specifications & equivalents
The 22206EAW33 is a ISO 15 radial bearing sized 30 x 62 x 20 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 30 mm |
| Outer diameter D | 62 mm |
| Width B | 20 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 75.7 kN |
| Basic static load rating C0 | 64.5 kN |
| Fatigue load limit Pu | 4.58 kN |
| Limiting speed (mechanical) | 8800 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 278 g |
| Manufacturer designation | NTN 22206EAW33 |
| Standard | ISO 15 |
| Catalog version | NTN Ball and Roller Bearings CAT.No.2203E |
| Last verified | 2026-10-01 |
Source: catalog reference (NTN Ball and Roller Bearings CAT.No.2203E) · extracted 2026-10-01
Parameters extracted from the official NTN Ball and Roller Bearings catalogue (NTN Ball and Roller Bearings CAT.No.2203E); NTN® is a trademark of NTN Corporation, used here for identification only — mpnbase is not an authorized NTN distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at ntnglobal.com.
Dimensions in inches & 22200-series range
| Bore d | 1.181 in |
|---|---|
| Outer diameter D | 2.441 in |
| Width B | 0.787 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 16 mm |
| Smallest bore in 22200-series | 25 mm |
| Largest outer diameter in 22200-series | 580 mm |
| Width range across 22200-series | 18–150 mm |
| Bore position in 22200-series (smallest first) | 2 of 32 |
| Bore above smallest 22200-series size | 5 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 22206EAKW33 | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same NTN 22200-series envelope, cage and ratings; this is the cylindrical-bore execution of the tapered-bore 22206EAKW33 (K/K30 sleeve or tapered-seat mounting). Verify shaft arrangement. |
Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.
How the 22206EAW33 model number is decoded
22206EAW33 is the EA pressed-steel-cage execution of NTN's spherical roller range for a 30 mm shaft — 75.7 kN basic dynamic capacity in a 278 g, open ISO 15 envelope. Reading the full code: the number gives the 30×62 mm envelope, EA names the cage/capacity execution, no bore suffix means cylindrical bore for a direct shaft seat, and W33 annular lubrication groove with outer-ring holes completes the order number. The W33 annular lubrication groove with outer-ring holes makes relubrication part of the design: fresh grease reaches the rolling elements through the outer-ring feature rather than relying solely on end-side packing. Equivalent-load planning keeps a radial plus moderate axial combination on 22206EAW33; if the axial component dominates, pair with a thrust bearing rather than running one roller row unloaded. On vibrating-duty shafts verify the radial clearance class and cage choice at order time; the open 22206EAW33 leaves sealing and the C3/C4 clearance decision to the application drawing.
Typical equipment & failure modes
Common applications
- marine propulsion auxiliary shafts
- vibrating screen and feeder shafts
- industrial gearbox and reducer shafts
- conveyor pulley and elevator drum shafts
Known failure patterns
- raceway spalling at the roller ends when misalignment or deflection concentrates the line contact
- cage damage when a mounting force is applied through the roller set instead of the ring face
- roller-end smearing during skidding starts under light load and high viscosity grease
- brinelling from static overload or a hammer blow during sleeve mounting
- false brinelling on stopped machines exposed to screen or crusher vibration
Selection pitfalls — read before you substitute
- Vibrating-duty 30 mm bearings need the right clearance class and secure fits; verify the k5/m5 seat and relubrication routing rather than assuming the open 22206EAW33 is greased for life.
- K and K30 are different tapers — K is 1:12 and K30 is 1:30 on the wide series; an adapter sleeve for one will not mount the other 30 mm bearing, and drive-up procedures differ.
- Open spherical rollers swallow dust in mining duty; specify labyrinth or taconite seals externally, or the 8,800 r/min grease rating is lost to abrasive wear long before fatigue.
- Do not confuse EA and EM at the same number: 22206EAW33 carries EA pressed-steel-cage; swapping to the other cage execution changes mass, speed behaviour and sometimes suitability for vibration, even though the 30×62 mm envelope is identical.
- K and K30 are different tapers — K is 1:12 and K30 is 1:30 on the wide series; an adapter sleeve for one will not mount the other 30 mm bearing, and drive-up procedures differ.
- The 75.7/64.5 kN ratings, 4.58 kN Pu and 278 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for 22206EAW33 (EA pressed-steel-cage/W33); another maker's same-envelope part revises internal geometry, so re-verify ratings and cage before substitution on vibrating or rated drives.
Frequently asked questions
What are the dimensions and catalogue data of 22206EAW33?
22206EAW33 is an NTN double-row spherical roller bearing to ISO 15: 30 mm bore, 62 mm OD and 20 mm width (1.181 × 2.441 × 0.787 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 75.7 kN, C0 64.5 kN, Pu 4.58 kN, grease limiting speed 8,800 r/min, oil 11,000 r/min, mass about 278 g. It is open, with pressed sheet-steel window cage (EA high-capacity design).
What is the difference between the K/K30 tapered bore and the cylindrical bore versions?
22206EAW33 has a cylindrical bore and mounts directly on a machined shaft seat. Its tapered-bore counterpart is 22206EAKW33 (K = 1:12, or K30 = 1:30 on the wide series), intended for adapter/withdrawal-sleeve mounting.
What do EA and EM mean on NTN spherical roller bearings?
EA is the NTN standard-capacity/high-capacity execution with a pressed sheet-steel window cage; EM is the high-capacity execution with a one-piece machined brass cage. Both use the optimised symmetric-roller design, but cage identity changes mass, speed behaviour and suitability for duties like vibrating screens, so they are separate order numbers. 22206EAW33 is the EA pressed-steel-cage execution, listed with the ＊ ULTAGE new-generation mark.
What do D1 and W33 mean on 22206EAW33?
W33 denotes the annular lubrication groove with holes in the outer ring: the housing grease port feeds the groove and both roller rows directly. On NTN executions the same feature is spelled D1 in the NTN suffix language; 22206EAW33 carries W33.
How much misalignment and axial load can 22206EAW33 take?
The sphered outer raceway compensates static and dynamic misalignment in the order of 1–2° (verify the exact 2203E figure for the 22200 series); beyond that, load concentrates on one roller row. Load is predominantly radial with a moderate axial share in either direction — 75.7 kN C / 64.5 kN C0 — but sustained pure axial load is not recommended because it unloads one row.
Reviewed & verified by the MPN Base engineering desk against source catalog NTN Ball and Roller Bearings CAT.No.2203E on 2026-10-01. Read our editorial & correction policy.