7904DF
Type

Machine tool spindle bearings

Model:7904DF
Thickness(mm):9
Inner diameter d:20
Outer diameter D:37

Detailed information

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weight (kg)
  • (Refer to)0.036
Dimensions
  • d20
  • D37
  • B9
  • r Minimum0.3
  • r 1 (Minimum)0.15
Load rating (N)
  • Cr6600
  • Cor4050
Load rating {kgf}
  • Cr675
  • Cor410
Limit speed(1)(rpm)
  • Grease lubrication24000
  • Oil lubrication32000
Action point position (mm)
  • a11.1
Installation size (mm)
  • d a (Minimum)22.5
  • Da (Maximum)34.5
  • r a (Maximum)0.3
Bearing code(2)
  • Single column7904A5
  • DB7904DB
  • DF7904DF
  • DT7904DT
Rated load (paired double type) (N)
  • Cr10700
  • Cor8100
Rated load (paired double type) {kgf}
  • Cr1090
  • Cor825
Paired Duplex Limit speed(1) (rpm)
  • Grease lubrication19000
  • Oil lubrication26000
Paired Duplex Action point distance a0(mm)
  • Back-to-back configuration22.3
  • Face-to-face configuration4.3
Paired Duplex Installation size(mm)
  • d b (3) (Minimum)-
  • Db (Maximum)35.8
  • r b (3) (Maximum)0.15
Coefficientfo
  • Coefficientfo15.2

List of Similar Bearing Models