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Tapered roller bearing
31308-A Tapered roller bearing
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Main Dimensions & Performance Data
d
40 mm
D
90 mm
B
23 mm
C
17 mm
Cr
76000 N
Cor
83000 N
Cur
9700 N
Reference speed
5100 rpm
Limiting speed
8000 rpm
Mounting dimensions
damax
49 mm
轴挡肩最大直径
r1,2min
1.5 mm
内圈背面倒角尺寸
r3,4min
1.5 mm
外圈背面倒角尺寸
dbmin
47 mm
轴挡肩最大直径
a
17 mm
压力锥顶距
Damin
69 mm
轴承座挡肩最小直径
d1
59 mm
内圈引导挡边直径
Damax
73 mm
轴承座挡肩最大直径
Dbmin
74 mm
轴承座挡肩最小直径
Camin
3 mm
最小轴向间距
Cbmin
3.5 mm
最小轴向间距
ramax
1.5 mm
轴最大圆角半径
rbmax
1.5 mm
轴承座最大圆角半径
Temperature range
Tmin
-30 °C
最低工作温度
Tmax
120 °C
最高工作温度
Calculation coefficient
e
0.37
Fa/Fr 对应不同X和Y系数
Y
1.6
轴向动载荷系数
Y0
0.88
轴向静载荷系数