22215EAKD1 bearing: complete specifications & equivalents
The 22215EAKD1 is a ISO 15 radial bearing sized 75 x 130 x 31 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 75 mm |
| Outer diameter D | 130 mm |
| Width B | 31 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 244 kN |
| Basic static load rating C0 | 249 kN |
| Fatigue load limit Pu | 21.1 kN |
| Limiting speed (mechanical) | 4000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1640 g |
| Manufacturer designation | NTN 22215EAKD1 |
| 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 | 2.953 in |
|---|---|
| Outer diameter D | 5.118 in |
| Width B | 1.22 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 27.5 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) | 11 of 32 |
| Bore above smallest 22200-series size | 50 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 22215EAD1 | 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 22215EAD1 — 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 22215EAKD1 model number is decoded
22215EAKD1 belongs to the 22200 series of NTN spherical rollers and carries the ＊ ULTAGE new-generation mark in the 2203E table: self-aligning, high radial capacity, moderate axial load in either direction. Digit by digit the code reads as spherical-roller dimension series plus 75 mm bore; the 31 mm width is the wide ISO 15 section, which is why spherical rollers interchange dimensionally but not in cage or rating detail. The bearing accepts predominantly radial load with a moderate axial share, but is not a pure thrust bearing: sustained axial-only load skids the unloaded row and damages the EA pressed-steel-cage cage. Pu 21.1 kN against C0 249 kN anchors the contamination derating; for dirty mining duty the adjusted life of 22215EAKD1 moves with cleanliness far more than with small C variations. After mounting on a tapered seat, lock the nut and re-check clearance after a short running-in period, because sleeve seating and ring lift-off can change the residual clearance of the 75 mm set.
Typical equipment & failure modes
Common applications
- heavy conveyor and bucket-excavator pulleys
- jaw/cone crusher eccentric and shaft positions
- paper-machine dryer and press rolls
- cement-mill and kiln auxiliary drives
Known failure patterns
- lubricant starvation at the centre rib area when the D1/W33 groove is not connected to a relubrication supply
- machined EM cage wear from inadequate oil film at the cage-guiding surfaces
- roller-end smearing during skidding starts under light load and high viscosity grease
- asymmetric wear on the two roller rows from sustained angular misalignment beyond the self-aligning range
- hard-particle indentation through the open arrangement in dusty mining duty
Selection pitfalls — read before you substitute
- Mount the 75 mm ring with induction heat or the sleeve drive-up procedure; at 1640 g cocking damages the spherical raceways, and repositioning after seating is impractical.
- The two roller rows must share load equally — a tilted spacer or unequal abutment on the 31 mm-wide ring loads one row only and shows as asymmetric race polish during inspection.
- The two roller rows must share load equally — a tilted spacer or unequal abutment on the 31 mm-wide ring loads one row only and shows as asymmetric race polish during inspection.
- Never substitute 22215EAKD1 by envelope alone: the 249 kN C0 and 21.1 kN Pu are specific to the NTN EA pressed-steel-cage execution, and vibrating duty depends heavily on cage identity.
- Never substitute 22215EAKD1 by envelope alone: the 249 kN C0 and 21.1 kN Pu are specific to the NTN EA pressed-steel-cage execution, and vibrating duty depends heavily on cage identity.
- The 244/249 kN ratings, 21.1 kN Pu and 1640 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for 22215EAKD1 (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 22215EAKD1?
22215EAKD1 is an NTN double-row spherical roller bearing to ISO 15: 75 mm bore, 130 mm OD and 31 mm width (2.953 × 5.118 × 1.22 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 244 kN, C0 249 kN, Pu 21.1 kN, grease limiting speed 4,000 r/min, oil 5,000 r/min, mass about 1640 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. 22215EAKD1 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 22215EAD1.
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. 22215EAKD1 is the EA pressed-steel-cage execution, listed with the ＊ ULTAGE new-generation mark.
What do D1 and W33 mean on 22215EAKD1?
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. 22215EAKD1 carries D1; W33 is the equivalent industry-spelled annular-groove-and-holes feature seen on other executions.
How much misalignment and axial load can 22215EAKD1 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 — 244 kN C / 249 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.