6921NR
Type

High-temperature resistant bearings

Model:6921NR
Thickness(mm):20
Inner diameter d:105
Outer diameter D:145

Detailed information

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Load rating {kgf}
  • Cr4300
  • Cor4300
Bearing code
  • Open6921
  • Dust cover type6921ZZ
  • 非接触Seal圈type6921VV
  • 接触Seal圈type
  • With stop ring槽6921N
  • With stop ring6921NR
Installation size (mm)
  • d a (2) (Minimum)111.5
  • d a (2) (Maximum)116
  • Da(2) (Maximum)138.5
  • r a (Maximum)1
  • Dx (Minimum)152
  • C Y (Maximum)4.7
Dimensions
  • d105
  • D145
  • B20
  • r Minimum1.1
Load rating (N)
  • Cr42500
  • Cor42000
Limit speed(rpm) Grease lubrication
  • Open Z·ZZtype V·VVtype4300
  • DUtype DDUtype-
Limit speed(rpm) Oil lubrication
  • Open Ztype5300
Stop ring槽Size(1) (mm)
  • a (Maximum)3.3
  • b (Minimum)1.9
  • D1 (Maximum)142.6
  • r o (Maximum)0.6
  • r N (Minimum)0.5
Stop ring size(1) (mm)
  • D2 (Maximum)150.7
  • f (Maximum)1.7
Coefficient fo
  • Coefficient fo16.4
weight(kg) (Refer to)
  • weight(kg) (Refer to)0.856