QJ 1252 N2MAFour-point contact ball bearing with locating slots

SKU: QJ 1252 N2MAFour-point contact ball bearing with locating slots

Four-point contact ball bearings with locating slots can accommodate high axial loads in both directions and small radial loads. They can operate at very high speeds and are more suitable than deep groove ball bearings for supporting large axial forces. The outer ring, with ball and cage assembly, can be mounted separately from the two inner ring halves. The locating slots can be used to prevent the outer ring from rotating.

ID:102614

Dimensions - QJ 1252 N2MA

Dimensions

d
260 mm
Bore diameter
D
480 mm
Outside diameter
B
90 mm
Width
d1
345 mm
Shoulder diameter inner ring
D1
395 mm
Shoulder diameter outer ring/ inner diameter housing washer
a
370 mm
Distance pressure point(s)
h
15 mm
Locating slot depth outer ring
b
12.5 mm
Locating slot width outer ring
r0
2.5 mm
Corner radius locating slot
r1,2
min. 5 mm
Chamfer dimension inner ring

Abutment dimensions - QJ 1252 N2MA

Abutment dimensions

da
min. 282 mm
Abutment diameter shaft
Da
max. 458 mm
Abutment diameter housing
ra
max. 4 mm
Fillet radius

Calculation data

Basic dynamic load rating C
741 kN
Basic static load rating C0
1 460 kN
Fatigue load limit Pu
32 kN
Limiting speed
2 200 r/min
Calculation factor A
12.3
Limiting value e
1.34
Calculation factor X
0.54
Calculation factor Y0
0.44
Calculation factor Y1
0.47
Calculation factor Y2
0.81

Mass

Mass bearing
78 kg

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