MPNbase

45×85×19 mm bearings

49 models from 3 brands across 6 types share this ISO 15 envelope: 45 mm bore, 85 mm outside diameter, 19 mm width (1.772×3.346×0.748 in), 20 mm radial section.

49 models fit this space 3 brands 49 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)
11209-TN9 Self-Aligning Ball SKF open CN 22.9 7.8 770
1209 Self-Aligning Ball NTN open — 22 7.35 470
1209-EKTN9 Self-Aligning Ball SKF open CN 22.9 7.8 470
1209-ETN9 Self-Aligning Ball SKF open CN 22.9 7.8 470
1209K Self-Aligning Ball NTN open — 22 7.35 470
1726209-2RS1 Insert (Y-bearings) SKF 2RS CN 33.2 21.6 400
1726209-B-2RS1-VP274 Insert (Y-bearings) SKF 2RS CN 33.2 21.6 390
209 Deep Groove Ball SKF open CN 35.2 30 440
209-ZZ Deep Groove Ball SKF ZZ CN 35.2 30 440
6209 Deep Groove Ball SKF open CN 35.1 21.6 420
6209-2RS Deep Groove Ball SKF 2RS CN 35.1 21.6 420
6209-2RS-NSK Deep Groove Ball NSK 2RS CN 34.5 20.4 420
6209-2RS-NTN Deep Groove Ball NTN 2RS CN 36 20.4 398
6209-NSK Deep Groove Ball NSK open CN 34.5 20.4 420
6209-NTN Deep Groove Ball NTN open CN 36 20.4 398
6209-RSR Deep Groove Ball NSK RSR CN 34.5 20.4 420
6209-RSR-NTN Deep Groove Ball NTN RSR CN 36 20.4 398
6209-ZZ Deep Groove Ball SKF ZZ CN 35.1 21.6 430
6209-ZZ-NSK Deep Groove Ball NSK ZZ CN 34.5 20.4 420
6209-ZZ-NTN Deep Groove Ball NTN ZZ CN 36 20.4 398
7209 Angular Contact Ball SKF open CN 38 28.5 420
7209-ACCBM Angular Contact Ball SKF open CN 44 32 420
7209-BE-2RZP Angular Contact Ball SKF RSR CN 35.8 26 520
7209-BECBM Angular Contact Ball SKF open CN 38 28.5 420
7209-BECBP Angular Contact Ball SKF open CN 38 28.5 420
7209-BECBY Angular Contact Ball SKF open CN 40 30.5 420
7209-BEGAPH Angular Contact Ball SKF open CN 38 28.5 420
7209-NTN Angular Contact Ball NTN open CN 44 28.7 404
7209B Angular Contact Ball NTN open CN 40 26.2 410
BMB-6209-080S2-UB008A Sensor Bearing Units SKF — — 33.2 21.6 540
BMB-6209-080S2-UB108A Sensor Bearing Units SKF — — 33.2 21.6 540
N209 Cylindrical Roller NTN open CN 51 47 423
N209-ECP Cylindrical Roller SKF open CN 69.5 64 430
N209EA Cylindrical Roller NTN open CN 74.5 66.5 423
NF209 Cylindrical Roller NTN open CN 51 47 423
NF209EA Cylindrical Roller NTN open CN 74.5 66.5 423
NJ209 Cylindrical Roller NTN open CN 51 47 423
NJ209-ECP Cylindrical Roller SKF open CN 69.5 64 440
NJ209EA Cylindrical Roller NTN open CN 74.5 66.5 423
NU209 Cylindrical Roller SKF open CN 69.5 64 420
NU209-NTN Cylindrical Roller NTN open CN 51 47 423
NU209EA Cylindrical Roller NTN open CN 74.5 66.5 423
NUP209 Cylindrical Roller NTN open CN 51 47 423
NUP209-ECP Cylindrical Roller SKF open CN 69.5 64 440
NUP209EA Cylindrical Roller NTN open CN 74.5 66.5 423
QJ-209-MA Angular Contact Ball SKF open CN 63 56 520
QJ209 Angular Contact Ball NTN open CN 55 81 520
W6209-2RS Deep Groove Ball SKF 2RS CN 28.1 20.4 395
W6209-ZZ Deep Groove Ball SKF ZZ CN 28.1 20.4 394

Note: catalogue dynamic load ratings for this envelope span 22.0– 74.5 kN — a 239% spread between designs in the very same 45×85×19 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 45 mm bore bearings for wider or narrower sections, or open a model page for naming-rule decode, applications and graded cross references: 11209-TN9, 1209, 1209-EKTN9, 1209-ETN9, 1209K, 1726209-2RS1, 1726209-B-2RS1-VP274, 209, 209-ZZ, 6209, 6209-2RS, 6209-2RS-NSK, 6209-2RS-NTN, 6209-NSK, 6209-NTN, 6209-RSR, 6209-RSR-NTN, 6209-ZZ, 6209-ZZ-NSK, 6209-ZZ-NTN, 7209, 7209-ACCBM, 7209-BE-2RZP, 7209-BECBM, 7209-BECBP, 7209-BECBY, 7209-BEGAPH, 7209-NTN, 7209B, BMB-6209-080S2-UB008A, BMB-6209-080S2-UB108A, N209, N209-ECP, N209EA, NF209, NF209EA, NJ209, NJ209-ECP, NJ209EA, NU209, NU209-NTN, NU209EA, NUP209, NUP209-ECP, NUP209EA, QJ-209-MA, QJ209, W6209-2RS, W6209-ZZ.

Frequently asked questions

Are all 45×85×19 mm bearings interchangeable?

They share the same ISO 15 boundary dimensions — 45 mm bore, 85 mm OD, 19 mm width (1.772×3.346×0.748 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 49 models listed here and must be checked against the duty before substitution.

Is it a drop-in replacement if two bearings both measure 45×85×19?

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 45×85×19 mm in inches?

45×85×19 mm converts to 1.772×3.346×0.748 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 11209-TN9, 1209, 1209-EKTN9 mount in the same space despite different internal designs.