MPNbase

100×180×34 mm bearings

38 models from 3 brands across 4 types share this ISO 15 envelope: 100 mm bore, 180 mm outside diameter, 34 mm width (3.937×7.087×1.339 in), 40 mm radial section.

38 models fit this space 3 brands 38 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)
1220 Self-Aligning Ball NTN open — 69.5 29.7 3740
1220-K Self-Aligning Ball SKF open CN 68.9 30 3700
1220K Self-Aligning Ball NTN open — 69.5 29.7 3740
220 Deep Groove Ball SKF open CN 134 140 3450
220-ZZ Deep Groove Ball SKF ZZ CN 134 140 3450
6220 Deep Groove Ball SKF open CN 127 93 3200
6220-2RS Deep Groove Ball SKF 2RS CN 127 93 3300
6220-2RS-NSK Deep Groove Ball NSK 2RS CN 134 93 3170
6220-2RS-NTN Deep Groove Ball NTN 2RS CN 135 93 3140
6220-M Deep Groove Ball SKF open CN 127 93 3800
6220-NSK Deep Groove Ball NSK open CN 134 93 3170
6220-NTN Deep Groove Ball NTN open CN 135 93 3140
6220-RSR Deep Groove Ball NSK RSR CN 134 93 3170
6220-RSR-NTN Deep Groove Ball NTN RSR CN 135 93 3140
6220-ZZ Deep Groove Ball SKF ZZ CN 127 93 3300
6220-ZZ-NSK Deep Groove Ball NSK ZZ CN 134 93 3170
6220-ZZ-NTN Deep Groove Ball NTN ZZ CN 135 93 3140
7220 Angular Contact Ball SKF open CN 135 122 3300
7220-BECBM Angular Contact Ball SKF open CN 143 134 3300
7220-BECBP Angular Contact Ball SKF open CN 143 134 3300
7220-BECBY Angular Contact Ball SKF open CN 143 134 3300
7220-BEP Angular Contact Ball SKF open CN 135 122 3300
7220-NTN Angular Contact Ball NTN open CN 159 126 3200
7220B Angular Contact Ball NTN open CN 144 114 3260
N220 Cylindrical Roller NTN open CN 203 217 3260
N220-ECP Cylindrical Roller SKF open CN 285 305 3450
NF220 Cylindrical Roller NTN open CN 203 217 3260
NJ220 Cylindrical Roller NTN open CN 203 217 3260
NJ220-ECP Cylindrical Roller SKF open CN 285 305 3450
NJ220E Cylindrical Roller NTN open CN 277 305 —
NU220 Cylindrical Roller SKF open CN 285 305 3350
NU220-NTN Cylindrical Roller NTN open CN 203 217 3260
NU220E Cylindrical Roller NTN open CN 277 305 —
NUP220 Cylindrical Roller NTN open CN 203 217 3260
NUP220-ECP Cylindrical Roller SKF open CN 285 305 3600
NUP220E Cylindrical Roller NTN open CN 277 305 —
QJ-220-N2MA Angular Contact Ball SKF open CN 236 265 4050
QJ220 Angular Contact Ball NTN open CN 200 355 4020

Note: catalogue dynamic load ratings for this envelope span 68.9– 285.0 kN — a 314% spread between designs in the very same 100×180×34 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 100 mm bore bearings for wider or narrower sections, or open a model page for naming-rule decode, applications and graded cross references: 1220, 1220-K, 1220K, 220, 220-ZZ, 6220, 6220-2RS, 6220-2RS-NSK, 6220-2RS-NTN, 6220-M, 6220-NSK, 6220-NTN, 6220-RSR, 6220-RSR-NTN, 6220-ZZ, 6220-ZZ-NSK, 6220-ZZ-NTN, 7220, 7220-BECBM, 7220-BECBP, 7220-BECBY, 7220-BEP, 7220-NTN, 7220B, N220, N220-ECP, NF220, NJ220, NJ220-ECP, NJ220E, NU220, NU220-NTN, NU220E, NUP220, NUP220-ECP, NUP220E, QJ-220-N2MA, QJ220.

Frequently asked questions

Are all 100×180×34 mm bearings interchangeable?

They share the same ISO 15 boundary dimensions — 100 mm bore, 180 mm OD, 34 mm width (3.937×7.087×1.339 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 38 models listed here and must be checked against the duty before substitution.

Is it a drop-in replacement if two bearings both measure 100×180×34?

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 100×180×34 mm in inches?

100×180×34 mm converts to 3.937×7.087×1.339 in, with a 40 mm (1.575 in) radial section height. These are the ISO 15 general-plan envelope dimensions shared across manufacturers, which is why models such as 1220, 1220-K, 1220K mount in the same space despite different internal designs.