MPNbase

40×80×23 mm bearings

31 models from 3 brands across 6 types share this ISO 15 envelope: 40 mm bore, 80 mm outside diameter, 23 mm width (1.575×3.150×0.906 in), 20 mm radial section.

31 models fit this space 3 brands 31 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)
2208 Self-Aligning Ball NTN open — 22.4 7.35 506
2208-E-2RS1KTN9 Self-Aligning Ball SKF 2RS CN 19.9 6.95 500
2208-E-2RS1TN9 Self-Aligning Ball SKF 2RS CN 19.9 6.95 500
2208-EKTN9 Self-Aligning Ball SKF open CN 31.9 10 510
2208-ETN9 Self-Aligning Ball SKF open CN 31.9 10 510
2208K Self-Aligning Ball NTN open — 22.4 7.35 506
22208 Spherical Roller SKF open CN 98.5 90 530
22208-EK Spherical Roller SKF open CN 98.5 90 680
22208EAD1 Spherical Roller NTN open CN 116 105 528
22208EAKD1 Spherical Roller NTN open CN 116 105 518
22208EMD1 Spherical Roller NTN open CN 110 98 529
22208EMKD1 Spherical Roller NTN open CN 110 98 519
4208-ATN9 Deep Groove Ball SKF open CN 37.1 32.5 500
62208-2RS Deep Groove Ball SKF 2RS CN 30.7 19 470
C2208-KTN9 CARB Toroidal Roller SKF open CN 90 86.5 510
C2208-TN9 CARB Toroidal Roller SKF open CN 90 86.5 510
C2208-V CARB Toroidal Roller SKF open CN 102 104 530
N2208 Cylindrical Roller NTN open CN 64.5 62 480
N2208EA Cylindrical Roller NTN open CN 85.5 77.5 491
NA-2208-2RS Support Rollers SKF open CN 27.5 40.5 630
NF2208EA Cylindrical Roller NTN open CN 85.5 77.5 491
NJ2208 Cylindrical Roller NTN open CN 64.5 62 480
NJ2208-ECP Cylindrical Roller SKF open CN 81.5 75 500
NJ2208EA Cylindrical Roller NTN open CN 85.5 77.5 491
NU2208 Cylindrical Roller SKF open CN 81.5 75 490
NU2208-NTN Cylindrical Roller NTN open CN 64.5 62 480
NU2208EA Cylindrical Roller NTN open CN 85.5 77.5 491
NUP2208 Cylindrical Roller NTN open CN 64.5 62 480
NUP2208-ECP Cylindrical Roller SKF open CN 81.5 75 510
NUP2208EA Cylindrical Roller NTN open CN 85.5 77.5 491
SL182208-XL Cylindrical Roller FAG open CN 97 91 550

Note: catalogue dynamic load ratings for this envelope span 19.9– 116.0 kN — a 483% spread between designs in the very same 40×80×23 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 40 mm bore bearings for wider or narrower sections, or open a model page for naming-rule decode, applications and graded cross references: 2208, 2208-E-2RS1KTN9, 2208-E-2RS1TN9, 2208-EKTN9, 2208-ETN9, 2208K, 22208, 22208-EK, 22208EAD1, 22208EAKD1, 22208EMD1, 22208EMKD1, 4208-ATN9, 62208-2RS, C2208-KTN9, C2208-TN9, C2208-V, N2208, N2208EA, NA-2208-2RS, NF2208EA, NJ2208, NJ2208-ECP, NJ2208EA, NU2208, NU2208-NTN, NU2208EA, NUP2208, NUP2208-ECP, NUP2208EA, SL182208-XL.

Frequently asked questions

Are all 40×80×23 mm bearings interchangeable?

They share the same ISO 15 boundary dimensions — 40 mm bore, 80 mm OD, 23 mm width (1.575×3.150×0.906 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 31 models listed here and must be checked against the duty before substitution.

Is it a drop-in replacement if two bearings both measure 40×80×23?

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 40×80×23 mm in inches?

40×80×23 mm converts to 1.575×3.150×0.906 in, with a 20 mm (0.787 in) radial section height. These are the ISO 15 general-plan envelope dimensions shared across manufacturers, which is why models such as 2208, 2208-E-2RS1KTN9, 2208-E-2RS1TN9 mount in the same space despite different internal designs.