7938DF
Type

Machine tool spindle bearings

Model:7938DF
Thickness(mm):33
Inner diameter d:190
Outer diameter D:260

Detailed information

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weight (kg)
  • (Refer to)4.98
Dimensions
  • d190
  • D260
  • B33
  • r Minimum2
  • r 1 (Minimum)1
Load rating (N)
  • Cr147000
  • Cor192000
Load rating {kgf}
  • Cr15000
  • Cor19600
Limit speed(1)(rpm)
  • Grease lubrication3000
  • Oil lubrication4300
Action point position (mm)
  • a46.6
Installation size (mm)
  • d a (Minimum)200
  • Da (Maximum)250
  • r a (Maximum)2
Bearing code(2)
  • Single column7938C
  • DB7938DB
  • DF7938DF
  • DT7938DT
Rated load (paired double type) (N)
  • Cr239000
  • Cor385000
Rated load (paired double type) {kgf}
  • Cr24400
  • Cor39000
Paired Duplex Limit speed(1) (rpm)
  • Grease lubrication2400
  • Oil lubrication3400
Paired Duplex Action point distance a0(mm)
  • Back-to-back configuration93.3
  • Face-to-face configuration27.3
Paired Duplex Installation size(mm)
  • d b (3) (Minimum)-
  • Db (Maximum)254
  • r b (3) (Maximum)1
Coefficientfo
  • Coefficientfo16.5

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