22212EAKD1 bearing: complete specifications & equivalents
The 22212EAKD1 is a ISO 15 radial bearing sized 60 x 110 x 28 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 60 mm |
| Outer diameter D | 110 mm |
| Width B | 28 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 187 kN |
| Basic static load rating C0 | 181 kN |
| Fatigue load limit Pu | 15.4 kN |
| Limiting speed (mechanical) | 4800 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1120 g |
| Manufacturer designation | NTN 22212EAKD1 |
| 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 | 2.362 in |
|---|---|
| Outer diameter D | 4.331 in |
| Width B | 1.102 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 25 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) | 8 of 32 |
| Bore above smallest 22200-series size | 35 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 22212EAD1 | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same NTN 22200-series envelope, cage and ratings; this is the tapered-bore execution (K, 1:12) of the cylindrical-bore 22212EAD1 — mounting (adapter/withdrawal sleeve or tapered seat, drive-up) differs. 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 22212EAKD1 model number is decoded
In NTN Ball and Roller Bearings CAT.No.2203E, 22212EAKD1 denotes the 60 mm bore spherical roller bearing (187 kN C / 181 kN C0) in the 22200 series, the self-aligning choice for heavy combined load. Numbering ties 22212EAKD1 to its envelope and execution: same-number EA versus EM or plain variants share the 60 mm bore but differ in cage and sometimes mass, so they are quoted as separate articles. NTN prints two speeds for 22212EAKD1: 4,800 r/min grease and 6,000 r/min oil — the gap of 1,200 r/min reflects oil cooling of the heavy roller set. 60 mm bore is 2.362 in and 110 mm OD is 4.331 in; the ISO 15 envelope swaps between brands, but the 187/181 kN ratings and cage design are NTN 2203E values. Mount 22212EAKD1 on its adapter or withdrawal sleeve on the 60 mm plain shaft: oil the sleeve, fit the lock nut, drive up to the NTN-specified residual clearance (or use oil injection on large seats), then lock the tab washer.
Typical equipment & failure modes
Common applications
- large vibrating screens and mining feeders
- heavy conveyor and bucket-excavator pulleys
- jaw/cone crusher eccentric and shaft positions
- paper-machine dryer and 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
- micro-pitting when the EHL film is thinner than the raceway composite roughness
- water-induced pitting in washdown or outdoor duty without effective external seals
- rolling-contact fatigue after the catalogue L10 life at the actual load
Selection pitfalls — read before you substitute
- Mount the 60 mm ring with induction heat or the sleeve drive-up procedure; at 1120 g cocking damages the spherical raceways, and repositioning after seating is impractical.
- Oil relubrication toward 6,000 r/min needs drain and level design; flooding the 28 mm cavity churns heat through the heavy roller set and cage despite the higher oil speed figure.
- Minimum load must be maintained even at rest under vibration: an unloaded 22212EAKD1 on a stopped screen false-brinells; parking brakes and shaker isolation both matter.
- 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 60 mm bearing, and drive-up procedures differ.
- Oil relubrication toward 6,000 r/min needs drain and level design; flooding the 28 mm cavity churns heat through the heavy roller set and cage despite the higher oil speed figure.
- The 187/181 kN ratings, 15.4 kN Pu and 1120 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for 22212EAKD1 (EA pressed-steel-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 22212EAKD1?
22212EAKD1 is an NTN double-row spherical roller bearing to ISO 15: 60 mm bore, 110 mm OD and 28 mm width (2.362 × 4.331 × 1.102 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 187 kN, C0 181 kN, Pu 15.4 kN, grease limiting speed 4,800 r/min, oil 6,000 r/min, mass about 1120 g. It is open, with pressed sheet-steel window cage (EA high-capacity design) and a 1:12 tapered bore.
What is the difference between the K/K30 tapered bore and the cylindrical bore versions?
K denotes a 1:12 tapered bore. 22212EAKD1 mounts on an adapter sleeve (or tapered shaft seat) and is driven up to the specified residual clearance; its cylindrical-bore counterpart in the same envelope and ratings is 22212EAD1.
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. 22212EAKD1 is the EA pressed-steel-cage execution, listed with the ＊ ULTAGE new-generation mark.
What do D1 and W33 mean on 22212EAKD1?
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. 22212EAKD1 carries D1; W33 is the equivalent industry-spelled annular-groove-and-holes feature seen on other executions.
How much misalignment and axial load can 22212EAKD1 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 — 187 kN C / 181 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.