JTEKT/Koyo DB matched pair · live catalog page 6
7318BDB
Manufacturer-published matched-pair dimensions, load ratings, fatigue limit, and limiting speed.
Live manufacturer specification row
Published specifications
- Designation
- 7318BDB
- Arrangement
- Back-to-back matched pair (DB)
- Bore d
- 90 mm
- Outside diameter D
- 190 mm
- Pair width B
- 86 mm
- Minimum corner radius r
- 3 mm
- Minimum corner radius r1
- 1.1 mm
- Dynamic load rating Cr
- 317 kN
- Static load rating C0r
- 270 kN
- Fatigue load limit Cu
- 11.8 kN
- Factor f0
- Not published
- Grease limiting speed
- 2,000 rpm
- Published row text
- 7318BDB | 90 | 190 | 86 | 3 | 1.1 | 317 | 270 | 11.8 | - | 2000
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 pair7318DBD 190 mm · pair width 86 mmDB matched pair7318CDBD 190 mm · pair width 86 mmDB matched pair7918CDB FYD 125 mm · pair width 36 mmDB matched pair7018BDB FYD 140 mm · pair width 48 mmDB matched pair7018DB FYD 140 mm · pair width 48 mm