23022EMD1 bearing: complete specifications & equivalents
The 23022EMD1 is a ISO 15 radial bearing sized 110 x 170 x 45 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 110 mm |
| Outer diameter D | 170 mm |
| Width B | 45 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass, machined (M1) |
| Basic dynamic load rating C | 417 kN |
| Basic static load rating C0 | 517 kN |
| Fatigue load limit Pu | 32.1 kN |
| Limiting speed (mechanical) | 2600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 3660 g |
| Manufacturer designation | NTN 23022EMD1 |
| 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 & 23000-series range
| Bore d | 4.331 in |
|---|---|
| Outer diameter D | 6.693 in |
| Width B | 1.772 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 30 mm |
| Smallest bore in 23000-series | 70 mm |
| Largest outer diameter in 23000-series | 1580 mm |
| Width range across 23000-series | 27–345 mm |
| Bore position in 23000-series (smallest first) | 8 of 46 |
| Bore above smallest 23000-series size | 40 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 23022EMKD1 | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same NTN 23000-series envelope, cage and ratings; this is the cylindrical-bore execution of the tapered-bore 23022EMKD1 (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 23022EMD1 model number is decoded
23022EMD1 is the EM machined-brass-cage execution of NTN's spherical roller range for a 110 mm shaft — 417 kN basic dynamic capacity in a 3660 g, open ISO 15 envelope. Numbering ties 23022EMD1 to its envelope and execution: same-number EA versus EM or plain variants share the 110 mm bore but differ in cage and sometimes mass, so they are quoted as separate articles. NTN prints two speeds for 23022EMD1: 2,600 r/min grease and 3,300 r/min oil — the gap of 700 r/min reflects oil cooling of the heavy roller set. Speed planning: 2,600 r/min grease limiting speed is the cage/kinematic ceiling and 3,300 r/min is the oil-lubricated value for the 110 mm bore; vibrating screens rarely approach either and are load/cage limited instead. On vibrating-duty shafts verify the radial clearance class and cage choice at order time; the open 23022EMD1 leaves sealing and the C3/C4 clearance decision to the application drawing.
Typical equipment & failure modes
Common applications
- wind-turbine gearbox and rotor bearings
- large vibrating screens and mining feeders
- heavy conveyor and bucket-excavator pulleys
- jaw/cone crusher eccentric and shaft positions
Known failure patterns
- raceway spalling at the roller ends when misalignment or deflection concentrates the line contact
- machined EM cage wear from inadequate oil film at the cage-guiding surfaces
- micro-pitting when the EHL film is thinner than the raceway composite roughness
- 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
- Mount the 110 mm ring with induction heat or the sleeve drive-up procedure; at 3660 g cocking damages the spherical raceways, and repositioning after seating is impractical.
- Open spherical rollers swallow dust in mining duty; specify labyrinth or taconite seals externally, or the 2,600 r/min grease rating is lost to abrasive wear long before fatigue.
- The cylindrical-bore 23022EMD1 and its tapered-bore counterpart 23022EMKD1 share envelope and ratings but not mounting: do not order the K variant unless the drawing specifies a sleeve or tapered seat.
- The two roller rows must share load equally — a tilted spacer or unequal abutment on the 45 mm-wide ring loads one row only and shows as asymmetric race polish during inspection.
- Oil relubrication toward 3,300 r/min needs drain and level design; flooding the 45 mm cavity churns heat through the heavy roller set and cage despite the higher oil speed figure.
- The 417/517 kN ratings, 32.1 kN Pu and 3660 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for 23022EMD1 (EM machined-brass-cage/D1); 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 23022EMD1?
23022EMD1 is an NTN double-row spherical roller bearing to ISO 15: 110 mm bore, 170 mm OD and 45 mm width (4.331 × 6.693 × 1.772 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 417 kN, C0 517 kN, Pu 32.1 kN, grease limiting speed 2,600 r/min, oil 3,300 r/min, mass about 3660 g. It is open, with one-piece machined brass cage (EM high-capacity design).
What is the difference between the K/K30 tapered bore and the cylindrical bore versions?
23022EMD1 has a cylindrical bore and mounts directly on a machined shaft seat. Its tapered-bore counterpart is 23022EMKD1 (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. 23022EMD1 is the EM machined-brass-cage execution, listed with the ＊ ULTAGE new-generation mark.
What do D1 and W33 mean on 23022EMD1?
D1 is NTN's outer-ring lubrication feature: an annular groove with oil holes around the outer ring, aligned with a housing grease port so lubricant reaches both roller rows directly. 23022EMD1 carries D1; W33 is the equivalent industry-spelled annular-groove-and-holes feature seen on other executions.
How much misalignment and axial load can 23022EMD1 take?
The sphered outer raceway compensates static and dynamic misalignment in the order of 1–2° (verify the exact 2203E figure for the 23000 series); beyond that, load concentrates on one roller row. Load is predominantly radial with a moderate axial share in either direction — 417 kN C / 517 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.