22220EAD1 bearing: complete specifications & equivalents
The 22220EAD1 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 | 4900 g |
| Manufacturer designation | NTN 22220EAD1 |
| 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 |
|---|---|---|---|
| 22220EAKD1 | 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 22220EAKD1 (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 22220EAD1 model number is decoded
22220EAD1 is the EA pressed-steel-cage execution of NTN's spherical roller range for a 100 mm shaft — 472 kN basic dynamic capacity in a 4900 g, open ISO 15 envelope. Numbering ties 22220EAD1 to its envelope and execution: same-number EA versus EM or plain variants share the 100 mm bore but differ in cage and sometimes mass, so they are quoted as separate articles. The 40.0 mm radial section over the 100 mm bore carries two roller rows; capacity per millimetre of bore is about 4.7 kN/mm, among the highest of rolling bearings for the ISO 15 envelope. 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. Never mount 22220EAD1 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 180 mm race.
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
- micro-pitting when the EHL film is thinner than the raceway composite roughness
- 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
- Mount the 100 mm ring with induction heat or the sleeve drive-up procedure; at 4900 g cocking damages the spherical raceways, and repositioning after seating is impractical.
- Do not confuse EA and EM at the same number: 22220EAD1 carries EA pressed-steel-cage; swapping to the other cage execution changes mass, speed behaviour and sometimes suitability for vibration, even though the 100×180 mm envelope is identical.
- Never substitute 22220EAD1 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.
- Oil relubrication toward 3,600 r/min needs drain and level design; flooding the 46 mm cavity churns heat through the heavy roller set and cage despite the higher oil speed figure.
- The cylindrical-bore 22220EAD1 and its tapered-bore counterpart 22220EAKD1 share envelope and ratings but not mounting: do not order the K variant unless the drawing specifies a sleeve or tapered seat.
- The 472/495 kN ratings, 36.9 kN Pu and 4900 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for 22220EAD1 (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 22220EAD1?
22220EAD1 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 4900 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?
22220EAD1 has a cylindrical bore and mounts directly on a machined shaft seat. Its tapered-bore counterpart is 22220EAKD1 (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. 22220EAD1 is the EA pressed-steel-cage execution, listed with the ＊ ULTAGE new-generation mark.
What do D1 and W33 mean on 22220EAD1?
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. 22220EAD1 carries D1; W33 is the equivalent industry-spelled annular-groove-and-holes feature seen on other executions.
How much misalignment and axial load can 22220EAD1 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.