MPNbase

90×160×40 mm bearings

25 models from 3 brands across 5 types share this ISO 15 envelope: 90 mm bore, 160 mm outside diameter, 40 mm width (3.543×6.299×1.575 in), 35 mm radial section.

25 models fit this space 3 brands 25 with catalogue C rating

Dimensional interchange — verify before substituting

These bearings are interchangeable on boundary dimensions per ISO 15 — same bore, OD and width. They are not guaranteed drop-in equivalents: compare load ratings, seals, clearance, cage, precision and axial-locating design for the specific duty. Models without a catalogue C rating on this site carry ISO 15 geometry only; request the manufacturer table before a load-critical replacement.

Model Type Brand Seal Clearance C (kN) C0 (kN) Mass (g)
2218 Self-Aligning Ball NTN open — 70.5 28.7 3220
2218-K Self-Aligning Ball SKF open CN 70.2 28.5 3400
2218K Self-Aligning Ball NTN open — 70.5 28.7 3220
22218 Spherical Roller SKF open CN 331 375 3400
22218-EK Spherical Roller SKF open CN 331 375 4550
22218EAD1 Spherical Roller NTN open CN 384 398 3340
22218EAKD1 Spherical Roller NTN open CN 384 398 3270
22218EMD1 Spherical Roller NTN open CN 384 398 3430
22218EMKD1 Spherical Roller NTN open CN 384 398 3370
4218-ATN9 Deep Groove Ball SKF open CN 112 122 3200
C2218 CARB Toroidal Roller SKF open CN 325 380 3300
C2218-K CARB Toroidal Roller SKF open CN 325 380 3300
N2218 Cylindrical Roller NTN open CN 219 248 3040
N2218EA Cylindrical Roller NTN open CN 286 315 3200
NF2218EA Cylindrical Roller NTN open CN 286 315 3200
NJ2218 Cylindrical Roller NTN open CN 219 248 3040
NJ2218-ECP Cylindrical Roller SKF open CN 280 315 3250
NJ2218EA Cylindrical Roller NTN open CN 286 315 3200
NU2218 Cylindrical Roller NTN open CN 219 248 3040
NU2218-ECP Cylindrical Roller SKF open CN 280 315 3150
NU2218EA Cylindrical Roller NTN open CN 286 315 3200
NUP2218 Cylindrical Roller NTN open CN 219 248 3040
NUP2218-ECP Cylindrical Roller SKF open CN 280 315 3300
NUP2218EA Cylindrical Roller NTN open CN 286 315 3200
SL182218 Cylindrical Roller FAG open CN 285 365 3480

Note: catalogue dynamic load ratings for this envelope span 70.2– 384.0 kN — a 447% spread between designs in the very same 90×160×40 mm space. The higher-rated unit is not an upgrade for every duty (it may run at lower limiting speed), but ignoring the gap will over- or under-life the replacement.

Substitution verification checklist

  1. Load rating. Check C (dynamic) and C0 (static) against the original life calculation — the table above shows which models carry verified catalogue values.
  2. Sealing. Open, -ZZ shields and -2RS contact seals are not equivalent in friction, speed or contamination protection; match the housing environment, not just the suffix on the old box.
  3. Internal clearance. CN/C3/C4 changes with fit and operating temperature; an interference inner-ring mount commonly needs C3 where the bench bearing ran CN.
  4. Cage and precision. Stamped steel, machined brass and polymer cages, and P0/P6/P5 tolerance classes, carry different speed and shock limits.
  5. Locating behaviour. Within one envelope an NU cylindrical roller floats axially while an NJ/NUP locates; ball designs take thrust that roller locating schemes do not. Preserve the shaft's locating arrangement.

Browse all 90 mm bore bearings for wider or narrower sections, or open a model page for naming-rule decode, applications and graded cross references: 2218, 2218-K, 2218K, 22218, 22218-EK, 22218EAD1, 22218EAKD1, 22218EMD1, 22218EMKD1, 4218-ATN9, C2218, C2218-K, N2218, N2218EA, NF2218EA, NJ2218, NJ2218-ECP, NJ2218EA, NU2218, NU2218-ECP, NU2218EA, NUP2218, NUP2218-ECP, NUP2218EA, SL182218.

Frequently asked questions

Are all 90×160×40 mm bearings interchangeable?

They share the same ISO 15 boundary dimensions — 90 mm bore, 160 mm OD, 40 mm width (3.543×6.299×1.575 in) — so they fit the same shaft, housing bore and axial space. Interchangeability ends at the envelope: dynamic load rating, seal arrangement, internal clearance, cage and precision class differ between the 25 models listed here and must be checked against the duty before substitution.

Is it a drop-in replacement if two bearings both measure 90×160×40?

Only after verification. Confirm five things in order: (1) the C/C0 load ratings meet the original life calculation, (2) the seal type is equivalent or acceptable for the contamination level (open vs -ZZ vs -2RS), (3) internal clearance matches (CN/C3/C4 — an interference fit changes residual play), (4) cage material and precision class suit the speed, and (5) the axial-locating behaviour is the same (for example an NU cylindrical roller floats while an NJ locates one way). Same dimensions alone never guarantee equal performance.

What is 90×160×40 mm in inches?

90×160×40 mm converts to 3.543×6.299×1.575 in, with a 35 mm (1.378 in) radial section height. These are the ISO 15 general-plan envelope dimensions shared across manufacturers, which is why models such as 2218, 2218-K, 2218K mount in the same space despite different internal designs.