JTEKT/Koyo Inch Tapered Roller Bearings · live catalog page 1
LM12749/11
Manufacturer-published tapered-roller dimensions, load ratings, fatigue load limit, and limiting speed.
Bore d21.987 mmOutside diameter D45.974 mmOverall width T15.494 mmDynamic rating Cr37.5 kNKoyo calculation tool ↗
Live manufacturer specification row
Published specifications
- Designation
- LM12749/11
- Family
- Inch Tapered Roller Bearings
- Bore d
- 21.987 mm
- Outside diameter D
- 45.974 mm
- Overall width T
- 15.494 mm
- Inner ring width B
- 16.637 mm
- Minimum corner radius r
- 1.2 mm
- Minimum corner radius r1
- 1.2 mm
- Dynamic load rating Cr
- 37.5 kN
- Static load rating C0r
- 34.6 kN
- Fatigue load limit Cu
- 4.85 kN
- Grease limiting speed
- 8,900 rpm
- Published row text
- LM12749/11 | 21.987 | 45.974 | 15.494 | 16.637 | 1.2 | 1.2 | 37.5 | 34.6 | 4.85 | 8900
Verification boundary
What still needs to match
Exact set architectureConfirm metric versus inch family, cone/cup identity, series, and complete designation.
Fits and geometryVerify shaft/housing seats, shoulders, fillets, preload/endplay, and mounting arrangement.
DutyCheck combined radial/axial loading, lubrication, speed, temperature, contamination, and required life.
Current manufacturer dataUse the linked JTEKT/Koyo calculation and CAD tools before ordering.