MPNbase

12×32×10 mm bearings

25 models from 4 brands across 3 types share this ISO 15 envelope: 12 mm bore, 32 mm outside diameter, 10 mm width (0.472×1.260×0.394 in), 10 mm radial section.

25 models fit this space 4 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)
1201 Self-Aligning Ball NTN open — 5.7 1.27 41
1201-ETN9 Self-Aligning Ball SKF open CN 6.24 1.43 40
6201 Deep Groove Ball SKF open CN 7.28 3.1 37
6201-2RS Deep Groove Ball SKF 2RS CN 7.28 3.1 38
6201-2RS-FAG Deep Groove Ball FAG 2RS CN 8 3.1 36
6201-2RS-NSK Deep Groove Ball NSK 2RS CN 7.5 3.05 37
6201-2RS-NTN Deep Groove Ball NTN 2RS CN 6.75 2.75 37
6201-FAG Deep Groove Ball FAG open CN 8 3.1 37
6201-NSK Deep Groove Ball NSK open CN 7.5 3.05 37
6201-NTN Deep Groove Ball NTN open CN 6.75 2.75 37
6201-RSR Deep Groove Ball SKF RSR CN 7.28 3.1 38
6201-RSR-NSK Deep Groove Ball NSK RSR CN 7.5 3.05 37
6201-RSR-NTN Deep Groove Ball NTN RSR CN 6.75 2.75 37
6201-ZZ Deep Groove Ball SKF ZZ CN 7.28 3.1 39
6201-ZZ-FAG Deep Groove Ball FAG ZZ CN 8 3.1 36
6201-ZZ-NSK Deep Groove Ball NSK ZZ CN 7.5 3.05 37
6201-ZZ-NTN Deep Groove Ball NTN ZZ CN 6.75 2.75 37
7201 Angular Contact Ball SKF open CN 7.61 3.8 36
7201-BECBP Angular Contact Ball SKF open CN 7.61 3.8 36
7201-BEP Angular Contact Ball SKF open CN 7.61 3.8 36
7201-NTN Angular Contact Ball NTN open CN 8.4 3.95 35
7201B Angular Contact Ball NTN open CN 7.75 3.65 36
W6201 Deep Groove Ball SKF open CN 5.72 3 34
W6201-2RS Deep Groove Ball SKF 2RS CN 5.72 3 36
W6201-ZZ Deep Groove Ball SKF ZZ CN 5.72 3 36

Note: catalogue dynamic load ratings for this envelope span 5.7– 8.4 kN — a 47% spread between designs in the very same 12×32×10 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 12 mm bore bearings for wider or narrower sections, or open a model page for naming-rule decode, applications and graded cross references: 1201, 1201-ETN9, 6201, 6201-2RS, 6201-2RS-FAG, 6201-2RS-NSK, 6201-2RS-NTN, 6201-FAG, 6201-NSK, 6201-NTN, 6201-RSR, 6201-RSR-NSK, 6201-RSR-NTN, 6201-ZZ, 6201-ZZ-FAG, 6201-ZZ-NSK, 6201-ZZ-NTN, 7201, 7201-BECBP, 7201-BEP, 7201-NTN, 7201B, W6201, W6201-2RS, W6201-ZZ.

Frequently asked questions

Are all 12×32×10 mm bearings interchangeable?

They share the same ISO 15 boundary dimensions — 12 mm bore, 32 mm OD, 10 mm width (0.472×1.260×0.394 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 12×32×10?

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 12×32×10 mm in inches?

12×32×10 mm converts to 0.472×1.260×0.394 in, with a 10 mm (0.394 in) radial section height. These are the ISO 15 general-plan envelope dimensions shared across manufacturers, which is why models such as 1201, 1201-ETN9, 6201 mount in the same space despite different internal designs.