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Self aligning ball bearing
QJ1248-MPA Four point contact ball bearing
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View structure diagram
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Domax
®
Precision rolling bearings
Main Dimensions & Performance Data
d
240 mm
D
440 mm
B
85 mm
Cr
660000 N
Cor
1220000 N
Cur
38000 N
Limiting speed
2600 rpm
Mounting dimensions
damin
257 mm
轴挡肩最小直径
rmin
4 mm
最小倒角尺寸
D1
367.9 mm
内圈档边直径
Damax
423 mm
轴承座挡肩最大直径
d1
314.95 mm
内圈档边直径
ramax
3 mm
最大凹穴半径
a
680 mm
压力锥顶距
α
45 °
接触角
Temperature range
Tmin
-30 °C
最低工作温度
Tmax
200 °C
最高工作温度