7921DT,7921DF,7921DB,7921A5
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7900 Series
Dimension and Parameters
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- Bearing Numbers
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Single row7921A5
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DB7921DB
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DF7921DF
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DT7921DT
- Principal dimensions(mm)
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d105
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D145
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B20
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r(min)1.1
-
r1(min)0.6
- Basic load ratings(N)
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Cr48000
-
Cor54000
- Basic load ratings(kgf)
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Cr4900
-
Cor5500
- Value
-
fo16.4
- Limiting Speed (rpm)
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Grease6600
-
Oil7500
- Distance of action point(mm)
-
a39.2
- Abutment and fillet dimensions
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da(min)112
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Da(max)138
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ra(max)1
- Weight
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(kg)0.82
- Basic load ratings(duplex bearing) (N)
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Cr78500
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Cor108000
- Basic load ratings(duplex bearing) (kgf)
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Cr8000
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Cor11000
- Limiting Speed(duplex bearing) (rpm)
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Grease4300
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Oil6000
- Distance of action point (duplex bearing)(a0)
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back-to-back arrangement78.3
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face-to-face arrangement38.3
- Installation dimensions(duplex bearing)
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db(min)-
-
Db(max)140
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rb(max)0.6