JTEKT/Koyo DB matched pair · live catalog page 4
7210CDB
Manufacturer-published matched-pair dimensions, load ratings, fatigue limit, and limiting speed.
Live manufacturer specification row
Published specifications
- Designation
- 7210CDB
- Arrangement
- Back-to-back matched pair (DB)
- Bore d
- 50 mm
- Outside diameter D
- 90 mm
- Pair width B
- 40 mm
- Minimum corner radius r
- 1.1 mm
- Minimum corner radius r1
- 0.6 mm
- Dynamic load rating Cr
- 91 kN
- Static load rating C0r
- 68.1 kN
- Fatigue load limit Cu
- 4.4 kN
- Factor f0
- 14.6
- Grease limiting speed
- 7,500 rpm
- Published row text
- 7210CDB | 50 | 90 | 40 | 1.1 | 0.6 | 91 | 68.1 | 4.4 | 14.6 | 7500
Verification boundary
What still needs to match
Arrangement and contact angleConfirm DB arrangement, contact angle, precision, preload, and complete suffix.
Fits and geometryVerify shaft/housing seats, shoulders, fillets, spacers, and axial clamping.
DutyCheck combined radial/axial load, stiffness, speed, lubrication, temperature, and required life.
Current dataUse the linked JTEKT/Koyo calculation and CAD tools before ordering.
Related Koyo DB pairs
Same bore dimension
DB matched pair7210BDBD 90 mm · pair width 40 mmDB matched pair7210DBD 90 mm · pair width 40 mmDB matched pair7310BDBD 110 mm · pair width 54 mmDB matched pair7310DBD 110 mm · pair width 54 mmDB matched pair7310CDBD 110 mm · pair width 54 mmDB matched pair7910CDB FYD 72 mm · pair width 24 mmDB matched pair7010BDB FYD 80 mm · pair width 32 mmDB matched pair7010DB FYD 80 mm · pair width 32 mm