7918DB
Type

Machine tool spindle bearings

Model:7918DB
Thickness(mm):18
Inner diameter d:90
Outer diameter D:125

Detailed information

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Dimensions
  • d90
  • D125
  • B18
  • r Minimum1.1
  • r 1 (Minimum)0.6
Load rating (N)
  • Cr39500
  • Cor43500
Load rating {kgf}
  • Cr4000
  • Cor4450
Limit speed(1)(rpm)
  • Grease lubrication6300
  • Oil lubrication8500
Action point position (mm)
  • a34.1
Installation size (mm)
  • d a (Minimum)97
  • Da (Maximum)118
  • r a (Maximum)1
Bearing code(2)
  • Single column7918A5
  • DB7918DB
  • DF7918DF
  • DT7918DT
Rated load (paired double type) (N)
  • Cr64000
  • Cor87000
Rated load (paired double type) {kgf}
  • Cr6500
  • Cor8900
Paired Duplex Limit speed(1) (rpm)
  • Grease lubrication5000
  • Oil lubrication7100
Paired Duplex Action point distance a0(mm)
  • Back-to-back configuration68.1
  • Face-to-face configuration32.1
Paired Duplex Installation size(mm)
  • db(3) (Minimum)-
  • Db (Maximum)120
  • rb(3) (Maximum)0.6
Coefficientfo
  • Coefficientfo16.4
weight(kg)
  • (Refer to)0.56

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