22220EAKD1 bearing: complete specifications & equivalents
The 22220EAKD1 is a ISO 15 radial bearing sized 100 x 180 x 46 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 100 mm |
| Outer diameter D | 180 mm |
| Width B | 46 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 472 kN |
| Basic static load rating C0 | 495 kN |
| Fatigue load limit Pu | 36.9 kN |
| Limiting speed (mechanical) | 2800 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 4800 g |
| Manufacturer designation | NTN 22220EAKD1 |
| 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 | 3.937 in |
|---|---|
| Outer diameter D | 7.087 in |
| Width B | 1.811 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 40 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) | 16 of 32 |
| Bore above smallest 22200-series size | 75 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 22220EAD1 | 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 22220EAD1 — 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 22220EAKD1 model number is decoded
NTN lists 22220EAKD1 with a 1:12 tapered bore (K) and D1 outer-ring annular oil groove with holes: 100 mm bore, 180 mm OD, 46 mm width, rated 2,800 r/min on grease. Digit by digit the code reads as spherical-roller dimension series plus 100 mm bore; the 46 mm width is the wide ISO 15 section, which is why spherical rollers interchange dimensionally but not in cage or rating detail. At 472 kN C and 4800 g mass the 22200 series part is built for shock and vibration; the 46 mm-wide ring needs square abutments to keep both rows equally loaded. The 40.0 mm section height hosts the spherical roller geometry; shaft and housing fillet radii must clear the chamfer table so the 46 mm-wide ring seats fully on both sides. Mount 22220EAKD1 on its adapter or withdrawal sleeve on the 100 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
- 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
- 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
- false brinelling on stopped machines exposed to screen or crusher vibration
Selection pitfalls — read before you substitute
- Mount the 100 mm ring with induction heat or the sleeve drive-up procedure; at 4800 g cocking damages the spherical raceways, and repositioning after seating is impractical.
- Adapter-sleeve mounting requires the correct sleeve series and locknut for the 100 mm shaft; a sleeve sized to bore alone ignores thread, width and the oil-injection option on large K seats.
- Minimum load must be maintained even at rest under vibration: an unloaded 22220EAKD1 on a stopped screen false-brinells; parking brakes and shaker isolation both matter.
- Never substitute 22220EAKD1 by envelope alone: the 495 kN C0 and 36.9 kN Pu are specific to the NTN EA pressed-steel-cage execution, and vibrating duty depends heavily on cage identity.
- Open spherical rollers swallow dust in mining duty; specify labyrinth or taconite seals externally, or the 2,800 r/min grease rating is lost to abrasive wear long before fatigue.
- The 472/495 kN ratings, 36.9 kN Pu and 4800 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for 22220EAKD1 (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 22220EAKD1?
22220EAKD1 is an NTN double-row spherical roller bearing to ISO 15: 100 mm bore, 180 mm OD and 46 mm width (3.937 × 7.087 × 1.811 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 472 kN, C0 495 kN, Pu 36.9 kN, grease limiting speed 2,800 r/min, oil 3,600 r/min, mass about 4800 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. 22220EAKD1 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 22220EAD1.
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. 22220EAKD1 is the EA pressed-steel-cage execution, listed with the ＊ ULTAGE new-generation mark.
What do D1 and W33 mean on 22220EAKD1?
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. 22220EAKD1 carries D1; W33 is the equivalent industry-spelled annular-groove-and-holes feature seen on other executions.
How much misalignment and axial load can 22220EAKD1 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 — 472 kN C / 495 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.