JTEKT/Koyo DB matched pair · live catalog page 18
7918CDB FY
Manufacturer-published matched-pair dimensions, load ratings, fatigue limit, and limiting speed.
Live manufacturer specification row
Published specifications
- Designation
- 7918CDB FY
- Arrangement
- Back-to-back matched pair (DB)
- Bore d
- 90 mm
- Outside diameter D
- 125 mm
- Pair width B
- 36 mm
- Minimum corner radius r
- 1.1 mm
- Minimum corner radius r1
- 0.6 mm
- Dynamic load rating Cr
- 80.3 kN
- Static load rating C0r
- 85.2 kN
- Fatigue load limit Cu
- 4.25 kN
- Factor f0
- 16.6
- Grease limiting speed
- 6,200 rpm
- Published row text
- 7918CDB FY | 90 | 125 | 36 | 1.1 | 0.6 | 80.3 | 85.2 | 4.25 | 16.6 | 6200
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 pair7218BDBD 160 mm · pair width 60 mmDB matched pair7218DBD 160 mm · pair width 60 mmDB matched pair7218CDBD 160 mm · pair width 60 mmDB matched pair7318BDBD 190 mm · pair width 86 mmDB matched pair7318DBD 190 mm · pair width 86 mmDB matched pair7318CDBD 190 mm · pair width 86 mmDB matched pair7018BDB FYD 140 mm · pair width 48 mmDB matched pair7018DB FYD 140 mm · pair width 48 mm