7218B
Type

Machine tool spindle bearings

Model:7218B
Thickness(mm):30
Inner diameter d:90
Outer diameter D:160

Detailed information

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Dimensions
  • d90
  • D160
  • B30
  • r Minimum2
  • r 1 (Minimum)1
Load rating (N)
  • Cr107000
  • Cor94000
Load rating {kgf}
  • Cr10900
  • Cor9550
Limit speed(1)(rpm)
  • Grease lubrication3200
  • Oil lubrication4300
Action point position (mm)
  • a67.4
Installation size (mm)
  • d a (Minimum)100
  • Da (Maximum)150
  • r a (Maximum)2
Bearing code(2)
  • Single column7218B
  • DB7218DB
  • DF7218DF
  • DT7218DT
Rated load (paired double type) (N)
  • Cr173000
  • Cor188000
Rated load (paired double type) {kgf}
  • Cr17700
  • Cor19100
Paired Duplex Limit speed(1) (rpm)
  • Grease lubrication2600
  • Oil lubrication3400
Paired Duplex Action point distance a0(mm)
  • Back-to-back configuration134.9
  • Face-to-face configuration74.9
Paired Duplex Installation size(mm)
  • db(3) (Minimum)96
  • Db (Maximum)154
  • rb(3) (Maximum)1
Coefficientfo
  • Coefficientfo15.5
weight(kg)
  • (Refer to)2.29

List of Similar Bearing Models