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Double-row ball slewing bearings
The double-row Ball slewing bearing has three seat-rings.The steel balls and the spacers may be directly arranged into the upper and lower races.Two rows of steel balls with different diameters are fitted according to the force boom. Such open mode fitting features extraordinary convenience.The load angles of both upper and lower races are 90°,which enable the bearing to bear large axial force and the tipping moment.When the radial force is larger than 1/10 of the axial force the races should be newly designed.As the axle and the dimension of the double-row ball slewing bearing are rather large,the bearing construction is sturdy ,hence it is especially suitable for tower cranes which require working radius over medium range,mobile cranes and loading and unloading machines.
sturctural
weight
Basic Type
Configuration
Mounting size
Gear
Ext Gear
Int Gear
kg
size
date
Toothless
Ext Toothless
INt Toothless
D
d
H
D1
D2
dn1
dm1
n
n1
H1
h
b
m
da
Z
da
Z
DL
DL
DL
mm
mm
dn2
dm2
mm
mm
mm
mm
mm
mm
mm
mm
mm
020.25.500
021.25.500
023.25.500
616
384
106
580
420
18
M16
20
4
96
26
60
5
644
126
357
72
100
022.25.500
024.25.500
6
646.8
105
350 .4
59
020.25.560
021.25.560
023.25.560
676
444
640
480
5
704
138
417
84
115
022.25.560
024.25.560
6
706.8
115
410.4
69
020.25.630
021.25.630
023.25.630
746
514
710
550
24
6
790.8
129
482.4
81
130
022.25.630
024.25.630
8
790.4
96
475.2
60
020.25.710
021.25.710
023.25.710
826
594
790
630
6
862.8
141
560.4
94
140
022.25.710
024.25.710
8
862.4
105
555.2
70
020.30.800
021.30.800
023.30.800
942
658
124
898
702
22
M20
30
6
114
29
80
8
982.4
120
619.2
78
200
022.30.800
024.30.800
10
988
96
614
62
020.30.900
021.30.900
023.30.900
1042
758
998
802
8
1086 .4
133
715.2
90
250
022.30.900
024.30.900
10
1088
106
714
72
020.30.1000
021.30.1000
023.30.1000
1142
858
1098
902
36
10
1198
117
814
82
300
022.30.1000
024.30.1000
12
1197.6
97
796.8
67
020.30.1120
021.30.1120
023.30.1120
1262
978
1218
1022
10
1318
129
924
93
340
022.30.1120
024.30.1120
12
1317.6
107
916.8
77
020.40.1250
021.40.1250
023.40.1250
1426
1074
160
1374
1126
26
M24
40
5
150
39
90
12
1497.6
122
1012.8
85
580
022.40.1250
024.40.1250
14
1495.2
104
1013.6
73
020.40.1400
021.40.1400
023.40.1400
1576
1224
1524
1272
12
1641.6
134
1156.8
97
650
022.40.1400
024.40.1400
14
1649.2
115
1153.6
83
020.40.1600
021.40.1600
023.40.1600
1776
1424
1724
1476
45
14
1845.2
129
1349.6
97
750
022.40.1600
024.40.1600
16
1852.8
113
1350.4
85
020.40.1800
021.40.1800
023.40.1800
1976
1624
1924
1676
14
2055.2
144
1545.6
111
820
022.40.1800
024.40.1800
16
2060.8
126
1542.4
97
020.50.2000
021.50.2000
023.50.2000
2215
1785
190
2149
1851
33
M30
48
8
178
47
120
16
2300.8
141
1702.4
107
1150
022.50.2000
024.50.2000
18
2300.4
125
1699.2
95
020.50.2240
021.50.2240
023.50.2240
2455
2025
2389
2091
16
2540.8
156
1942.4
122
1500
022.50.2240
024.50.2240
18
2552.4
139
1933.2
108
020.50.2500
021.50.2500
023.50.2500
2715
2285
2649
2351
56
18
2804.4
153
2203.2
123
1700
022.50.2500
024.50.2500
20
2816
138
2188
110
020.50.2800
021.50.2800
023.50.2800
3015
2585
2949
2651
18
3110.4
170
2491.2
139
1900
022.50.2800
024.50.2800
20
3116
153
2488
125
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