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Slewing Bearing

Double-row ball slewing bearing

CHARACTERISTIC OF STRUCTUREPERFORMANCE AND APPLICATION
The Double-Row Ball Slewing Ring has three seat-rings. Steel Balls and Spacers may be poured directly into upper and nether orbits. Two rows of upper and nether Steel Balls of different diameters can be assembled according to Undertaking Power situation. The kind of open-pattern-assembly is very convenience. The load-angles of both upper and nether circular orbits are 90<, which enable it to undertake very large Axial Force and Tipping moment. When the Radial Force is more than 0.1 multiple of Axial Force, the orbit need to be redesigned. As the axial and radial size of this kind of slewing ring are rather big, and the structure is firm, it is especially suitable for Tower Cranes of over-medium diameter, Truck Cranes, Loading and Unloading Machines, and so on.

Double row thrust angular contact ball slewing bearing

Model Dimensions Installation dimensions
D1     D2
mm
n1    n2 Ф1     Ф2
mm
Non-gear type
JY020.12.563 600    460    70 580    482 45    46 9.3    9.3
5787/1916G2 2320    1916    150 2245    1980 42    42 34    34
External gear type
6787/820G
6787/1600G
6788/1600G
6789/3405G
1150    820    125
2000    1600    175
2000    1600    175
3638    3405    185
1100    880
1920    1675
1920    1675
3700    3465
14/4    8
10    20
24    24
48    48
25/22    32
38    38
32    32
35    35
Internal gear type
7787/1310G
7787/2728K
1600    1310    135
3100    2728    210
1550    1365
3040    2780
32    32
36    36
26    26
25    26

Designations

(non- gear)

Boundary dimensions Bolt hole diameter Structure dimensions Mass
D d H D1 D2 n ф M n1 d1 D3 H1 h m Z X K  
mm mm mm mm mm mm mm mm mm mm mm KN KN kg
020.30.900.**   1042 758 124 998 802 30 22 20 6 871 877 114 29               316
020.30.1000.**   1142 858 124 1098 902 36 22 20 6 971 977 114 29               349
020.30.1120.**   1262 978 124 1218 1022 36 22 20 6 1091 1097 114 29               394
020.40.1250.**   1426 1074 160 1374 1126 40 26 24 5 1214 1215 150 39               709
020.40.1400.**   1576 1224 160 1524 1272 40 26 24 5 1364 1365 150 39               787
020.40.1600.**   1776 1424 160 1724 1476 45 26 24 5 1564 1565 150 39               899
020.40.1800.**   1976 1624 160 1924 1676 45 26 24 5 1764 1765 150 39               1018
020.50.2000.**   2215 1785 190 2149 1851 48 33 30 8 1962 1965 178 47               1586
020.50.2240.**   2455 2025 190 2389 2091 48 33 30 8 2202 2206 178 47               1789
020.50.2500.**   2715 2285 190 2649 2351 56 33 30 8 2462 2465 178 47               1990
020.50.2800.**   3015 2585 190 2949 2651 56 33 30 8 2762 2765 178 47               2243
020.60.3150.**   3428 2872 226 3338 2962 56 45 42 8 3102 3104 214 56               3762
020.60.3550.**   3828 3272 226 3738 3362 56 45 42 8 3502 3504 214 56               4272
020.60.4000.**   4278 3722 226 4188 3812 60 45 42 10 3952 3954 214 56               4828
020.60.4500.**   4778 4222 226 4688 4312 60 45 42 10 4452 4454 214 56               5465

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