7209DB
Type

Machine tool spindle bearings

Model:7209DB
Thickness(mm):19
Inner diameter d:45
Outer diameter D:85

Detailed information

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Dimensions
  • d45
  • D85
  • B19
  • r Minimum1.1
  • r 1 (Minimum)0.6
Load rating (N)
  • Cr39500
  • Cor28700
Load rating {kgf}
  • Cr4050
  • Cor2930
Limit speed(1)(rpm)
  • Grease lubrication8500
  • Oil lubrication12000
Action point position (mm)
  • a28.3
Installation size (mm)
  • d a (Minimum)52
  • Da (Maximum)78
  • r a (Maximum)1
Bearing code(2)
  • Single column7209A
  • DB7209DB
  • DF7209DF
  • DT7209DT
Rated load (paired double type) (N)
  • Cr64500
  • Cor57500
Rated load (paired double type) {kgf}
  • Cr6550
  • Cor5850
Paired Duplex Limit speed(1) (rpm)
  • Grease lubrication7100
  • Oil lubrication9500
Paired Duplex Action point distance a0(mm)
  • Back-to-back configuration56.5
  • Face-to-face configuration18.5
Paired Duplex Installation size(mm)
  • d b (3) (Minimum)50
  • Db (Maximum)80
  • r b (3) (Maximum)0.6
Coefficientfo
  • Coefficientfo14.7
weight(kg)
  • (Refer to)0.411

List of Similar Bearing Models