MPNbase

45×100×36 mm bearings

28 models from 3 brands across 4 types share this ISO 15 envelope: 45 mm bore, 100 mm outside diameter, 36 mm width (1.772×3.937×1.417 in), 27.5 mm radial section.

28 models fit this space 3 brands 28 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)
22309 Spherical Roller SKF open CN 190 183 1400
22309-EK Spherical Roller SKF open CN 190 183 1700
22309EAD1 Spherical Roller NTN open CN 206 187 1370
22309EAKD1 Spherical Roller NTN open CN 206 187 1340
22309EMD1 Spherical Roller NTN open CN 206 187 1380
22309EMKD1 Spherical Roller NTN open CN 206 187 1350
2309 Self-Aligning Ball NTN open — 55 16.7 1200
2309-E-2RS1KTN9 Self-Aligning Ball SKF 2RS CN 39 13.4 1300
2309-E-2RS1TN9 Self-Aligning Ball SKF 2RS CN 39 13.4 1300
2309-EKTN9 Self-Aligning Ball SKF open CN 63.7 19.3 1250
2309-ETN9 Self-Aligning Ball SKF open CN 63.7 19.3 1250
2309K Self-Aligning Ball NTN open — 55 16.7 1200
4309-ATN9 Deep Groove Ball SKF open CN 68.9 56 1250
62309-2RS Deep Groove Ball SKF 2RS CN 52.7 31.5 1200
N2309 Cylindrical Roller NTN open CN 110 104 1240
N2309EA Cylindrical Roller NTN open CN 162 153 1300
NF2309EA Cylindrical Roller NTN open CN 162 153 1300
NJ2309 Cylindrical Roller NTN open CN 110 104 1240
NJ2309-ECP Cylindrical Roller SKF open CN 160 153 1350
NJ2309EA Cylindrical Roller NTN open CN 162 153 1300
NJG2309-VH Cylindrical Roller SKF open CN 172 196 1400
NU2309 Cylindrical Roller SKF open CN 160 153 1300
NU2309-NTN Cylindrical Roller NTN open CN 110 104 1240
NU2309EA Cylindrical Roller NTN open CN 162 153 1300
NUP2309 Cylindrical Roller NTN open CN 110 104 1240
NUP2309-ECP Cylindrical Roller SKF open CN 160 153 1350
NUP2309EA Cylindrical Roller NTN open CN 162 153 1300
SL192309-XL Cylindrical Roller FAG open CN 181 164 1370

Note: catalogue dynamic load ratings for this envelope span 39.0– 206.0 kN — a 428% spread between designs in the very same 45×100×36 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: 22309, 22309-EK, 22309EAD1, 22309EAKD1, 22309EMD1, 22309EMKD1, 2309, 2309-E-2RS1KTN9, 2309-E-2RS1TN9, 2309-EKTN9, 2309-ETN9, 2309K, 4309-ATN9, 62309-2RS, N2309, N2309EA, NF2309EA, NJ2309, NJ2309-ECP, NJ2309EA, NJG2309-VH, NU2309, NU2309-NTN, NU2309EA, NUP2309, NUP2309-ECP, NUP2309EA, SL192309-XL.

Frequently asked questions

Are all 45×100×36 mm bearings interchangeable?

They share the same ISO 15 boundary dimensions — 45 mm bore, 100 mm OD, 36 mm width (1.772×3.937×1.417 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 28 models listed here and must be checked against the duty before substitution.

Is it a drop-in replacement if two bearings both measure 45×100×36?

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 45×100×36 mm in inches?

45×100×36 mm converts to 1.772×3.937×1.417 in, with a 27.5 mm (1.083 in) radial section height. These are the ISO 15 general-plan envelope dimensions shared across manufacturers, which is why models such as 22309, 22309-EK, 22309EAD1 mount in the same space despite different internal designs.