MPNbase

150×270×45 mm bearings

23 models from 4 brands across 3 types share this ISO 15 envelope: 150 mm bore, 270 mm outside diameter, 45 mm width (5.906×10.630×1.772 in), 60 mm radial section.

23 models fit this space 4 brands 23 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)
6230 Deep Groove Ball SKF open CN 174 166 10000
6230-2RS Deep Groove Ball NTN 2RS CN 195 168 9410
6230-FAG Deep Groove Ball FAG open CN 187 168 10200
6230-M Deep Groove Ball SKF open CN 174 166 11500
6230-NSK Deep Groove Ball NSK open CN 194 168 10000
6230-NTN Deep Groove Ball NTN open CN 195 168 9410
6230-ZZ Deep Groove Ball NSK ZZ CN 194 168 10000
6230-ZZ-NTN Deep Groove Ball NTN ZZ CN 195 168 9410
7230 Angular Contact Ball NTN open CN 257 259 11000
7230-BCBM Angular Contact Ball SKF open CN 216 240 11500
7230B Angular Contact Ball NTN open CN 232 235 11000
N230 Cylindrical Roller NTN open CN 380 435 9720
NF230 Cylindrical Roller NTN open CN 380 435 9720
NJ230 Cylindrical Roller NTN open CN 380 435 9720
NJ230-ECM Cylindrical Roller SKF open CN 510 600 12000
NJ230E Cylindrical Roller NTN open CN 495 595 —
NU230 Cylindrical Roller NTN open CN 380 435 9720
NU230-ECM Cylindrical Roller SKF open CN 510 600 11500
NU230E Cylindrical Roller NTN open CN 495 595 —
NUP230 Cylindrical Roller NTN open CN 380 435 9720
NUP230-ECJ Cylindrical Roller SKF open CN 510 600 10500
NUP230E Cylindrical Roller NTN open CN 495 595 —
QJ-230-N2MA Angular Contact Ball SKF open CN 400 570 12500

Note: catalogue dynamic load ratings for this envelope span 174.0– 510.0 kN — a 193% spread between designs in the very same 150×270×45 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 150 mm bore bearings for wider or narrower sections, or open a model page for naming-rule decode, applications and graded cross references: 6230, 6230-2RS, 6230-FAG, 6230-M, 6230-NSK, 6230-NTN, 6230-ZZ, 6230-ZZ-NTN, 7230, 7230-BCBM, 7230B, N230, NF230, NJ230, NJ230-ECM, NJ230E, NU230, NU230-ECM, NU230E, NUP230, NUP230-ECJ, NUP230E, QJ-230-N2MA.

Frequently asked questions

Are all 150×270×45 mm bearings interchangeable?

They share the same ISO 15 boundary dimensions — 150 mm bore, 270 mm OD, 45 mm width (5.906×10.630×1.772 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 23 models listed here and must be checked against the duty before substitution.

Is it a drop-in replacement if two bearings both measure 150×270×45?

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 150×270×45 mm in inches?

150×270×45 mm converts to 5.906×10.630×1.772 in, with a 60 mm (2.362 in) radial section height. These are the ISO 15 general-plan envelope dimensions shared across manufacturers, which is why models such as 6230, 6230-2RS, 6230-FAG mount in the same space despite different internal designs.