JTEKT/Koyo Metric Tapered Roller Bearings · live catalog page 8
32311JR
Manufacturer-published tapered-roller dimensions, load ratings, fatigue load limit, and limiting speed.
Bore d55 mmOutside diameter D120 mmOverall width T45.5 mmDynamic rating Cr250 kNKoyo calculation tool ↗
Live manufacturer specification row
Published specifications
- Designation
- 32311JR
- Family
- Metric Tapered Roller Bearings
- Bore d
- 55 mm
- Outside diameter D
- 120 mm
- Overall width T
- 45.5 mm
- Inner ring width B
- 43 mm
- Minimum corner radius r
- 2.5 mm
- Minimum corner radius r1
- 2 mm
- Dynamic load rating Cr
- 250 kN
- Static load rating C0r
- 250 kN
- Fatigue load limit Cu
- 39.1 kN
- Grease limiting speed
- 3,400 rpm
- Published row text
- 32311JR | 55 | 120 | 45.5 | 43 | 2.5 | 2 | 250 | 250 | 39.1 | 3400
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.
Related Koyo bearings
Same family and bore
Metric Tapered Roller Bearings32911JRD 80 mm · T 17 mmMetric Tapered Roller Bearings32011JRD 90 mm · T 23 mmMetric Tapered Roller Bearings33011JRD 90 mm · T 27 mmMetric Tapered Roller Bearings33111JRD 95 mm · T 30 mmMetric Tapered Roller Bearings30211CRD 100 mm · T 22.75 mmMetric Tapered Roller Bearings30211JRD 100 mm · T 22.75 mmMetric Tapered Roller Bearings32211CRD 100 mm · T 26.75 mmMetric Tapered Roller Bearings32211JR-1D 100 mm · T 26.75 mm