22207EAW33 bearing: complete specifications & equivalents
The 22207EAW33 is a ISO 15 radial bearing sized 35 x 72 x 23 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 35 mm |
| Outer diameter D | 72 mm |
| Width B | 23 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 100 kN |
| Basic static load rating C0 | 92 kN |
| Fatigue load limit Pu | 6.11 kN |
| Limiting speed (mechanical) | 7500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 438 g |
| Manufacturer designation | NTN 22207EAW33 |
| 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 | 1.378 in |
|---|---|
| Outer diameter D | 2.835 in |
| Width B | 0.906 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 18.5 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) | 3 of 32 |
| Bore above smallest 22200-series size | 10 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 22207EAKW33 | 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 22207EAKW33 (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 22207EAW33 model number is decoded
22207EAW33 is the EA pressed-steel-cage execution of NTN's spherical roller range for a 35 mm shaft — 100 kN basic dynamic capacity in a 438 g, open ISO 15 envelope. Numbering ties 22207EAW33 to its envelope and execution: same-number EA versus EM or plain variants share the 35 mm bore but differ in cage and sometimes mass, so they are quoted as separate articles. The 18.5 mm radial section over the 35 mm bore carries two roller rows; capacity per millimetre of bore is about 2.9 kN/mm, among the highest of rolling bearings for the ISO 15 envelope. 35 mm bore is 1.378 in and 72 mm OD is 2.835 in; the ISO 15 envelope swaps between brands, but the 100/92 kN ratings and cage design are NTN 2203E values. Never mount 22207EAW33 by striking the outer ring through the roller set; drive through ring faces (or the adapter sleeve nut) and support the ring square to avoid brinelling the 72 mm race.
Typical equipment & failure modes
Common applications
- industrial gearbox and reducer shafts
- conveyor pulley and elevator drum shafts
- stone crusher and screen eccentric shafts
- papermaking and printing press rolls
Known failure patterns
- raceway spalling at the roller ends when misalignment or deflection concentrates the line contact
- pressed EA cage fatigue under sustained vibration when minimum load is not maintained
- sliding wear and heat when relubrication intervals ignore the groove (D1/W33) supply path
- fretting corrosion between adapter sleeve and tapered bore when the drive-up is insufficient
- brinelling from static overload or a hammer blow during sleeve mounting
Selection pitfalls — read before you substitute
- Vibrating-duty 35 mm bearings need the right clearance class and secure fits; verify the k5/m5 seat and relubrication routing rather than assuming the open 22207EAW33 is greased for life.
- The D1/W33 groove only helps if the housing has a matching grease passage; mounting a W33 22207EAW33 in a solid block with no port wastes the feature and leaves the centre rows under-lubricated.
- The two roller rows must share load equally — a tilted spacer or unequal abutment on the 23 mm-wide ring loads one row only and shows as asymmetric race polish during inspection.
- Open spherical rollers swallow dust in mining duty; specify labyrinth or taconite seals externally, or the 7,500 r/min grease rating is lost to abrasive wear long before fatigue.
- The cylindrical-bore 22207EAW33 and its tapered-bore counterpart 22207EAKW33 share envelope and ratings but not mounting: do not order the K variant unless the drawing specifies a sleeve or tapered seat.
- The 100/92 kN ratings, 6.11 kN Pu and 438 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for 22207EAW33 (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 22207EAW33?
22207EAW33 is an NTN double-row spherical roller bearing to ISO 15: 35 mm bore, 72 mm OD and 23 mm width (1.378 × 2.835 × 0.906 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 100 kN, C0 92 kN, Pu 6.11 kN, grease limiting speed 7,500 r/min, oil 9,400 r/min, mass about 438 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?
22207EAW33 has a cylindrical bore and mounts directly on a machined shaft seat. Its tapered-bore counterpart is 22207EAKW33 (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. 22207EAW33 is the EA pressed-steel-cage execution, listed with the ＊ ULTAGE new-generation mark.
What do D1 and W33 mean on 22207EAW33?
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; 22207EAW33 carries W33.
How much misalignment and axial load can 22207EAW33 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 — 100 kN C / 92 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.