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Long Durability Precision Small Slewing Ring Bearing

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The four-point contact ball bearings are radial single row angular contact ball bearings featuring raceways that can handle axial loads acting in both directions. A limited radial load can be supported for a given axial load.
Availability:
Quantity:
  • 011.30.710

  • XZWD

  • 8482800000

Tower cranes are seen on almost every major construction site throughout the world. These machines are built to lift heavy loads efficiently and safely. 

A tower crane slewing bearings serves as a connection between two adjacent structures, allowing rotation and transmission of load between them. In addition to satisfying Basic requirement, a turntable bearing typically includes features for simple and quick attachment to those adjacent structures, and commonly a feature to facilitate the mechanical rotation of one ring and its adjoining structure relative to the other.

Axial Load: Load parallel to the axis of slewing ring.

Radial Load:Load vertical to the axis of slewing ring.

SLEWING TORQUE Calcultation of tower crane slewing bearings of the necessary torque to enable a rotation of the whole assembly takes into account :

1.loads on the tower, 2.rotating masses, 3.distance to the rotation axis, 4.speeds and accelerations, 5.resisting torques.



To get drawing (pdf),please clik on Model.

No External gear Dimensions (mm) Mounting Dimensions (mm) Structural Dimension (mm) Gear data

Gear force 

10^4 KN

weight
           kg
D d H D1 D2 n Φ dm L n1 D3 d1 H1 h b x M De z N T
1 011.20.200. 280 120 60 248 152 12 16 M14 28 2 201 199 50 10 40 0 3 300 98 1.5 2.1 24
2 011.20.224.
304 144 60 272 176 12 16 M14 28 2 225 223 50 10 40 0 3 321 105 1.5 2.1 25
3 011.20.250. 330 170 60 298 202 18 16 M14 28 2 251 249 50 10 40 0 4 352 86 2.1 2.8 30
4 011.20.280. 360 200 60 328 232 18 16 M14 28 2 281 279 50 10 40 0 4 384 94 1.5 2.8 34
5 011.25.315.
408 222 70 372 258 20 18 M16 32 2 316 314 60 10 50 0 5 435 85 2.9 4.4 52
6 011.25.355.
448 262 70 412 298 20 18 M16 32 2 356 354 60 10 50 0 5 475 93 2.9 4.4 59
7 011.25.400.
493 307 70 457 343 20 18 M16 32 2 401 399 60 10 50 0 6 528 86 3.5 5.3 69
8 011.25.450. 543 357 70 507 393 20 18 M16 32 2 451 449 60 10 50 0 6 576 94 3.5 5.3 76
9 011.30.500. 602 398 80 566 434 20 18 M16 32 4 501 499 498 70 10 60 0.5 5 629 123 3.7 5.2 85
012.25/30.500 6 628.8 102 4.5 6.2
10 011.30.560. 662 458 80 626 494 20 18 M16 32 4 561 559 558 70 10 60 0.5 5 689 135 3.7 5.2 95
012.25/30.560 6 688.8 112 4.5 6.2
11 011.30.630. 732 528 80 696 564 24 18 M16 32 4 631 629 628 70 10 60 0.5 6 772.8 126 4.5 6.2 110
012.25/30.630 8 774.4 94 6 8.3/8.2
12 011.30.710. 812 608 80 776 644 24 18 M16 32 4 711 709 708 70 10 60 0.5 6 850.8 139 4.5 6.2 120
012.25/30.710 8 854.4 104 6 8.9/8.3
13 011.40.800. 922 678 100 878 722 30 22 M20 40 6 801 798 90 10 80 0.5 8 966.4 118 8 11.1 220
012.30/40.800 10 968 94 10 14.1/14
14 011.40.900. 1022 778 100 978 822 30 22 M20 40 6 901 898 90 10 80 0.5 8 1062.4 130 8 11.1 240
012.30/40.900 10 1068 104 10 14
15 011.40.1000 1122 878 100 1078 922 36 22 M20 40 6 1001 998 90 10 80 0.5 10 1188 116 10 14 270
012.30/40.1000 12 1185.6 96 12 16.7
16 011.40.1120 1242 998 100 1198 1042 36 22 M20 40 6 1121 1118 90 10 80 0.5 10 1298 127 10 14 300
012.30/40.1120 12 1305.6 106 12 16.7
17 011.45.1250 1390 1110 110 1337 1163 40 26 M24 48 5 1252 1248 100 10 90 0.5 12 1449.6 118 13.5 18.8 420
012.35/45.1250 14 1453.2 101 15.8 21.9
18 011.45.1400 1540 1260 110 1487 1313 40 26 M24 48 5 1402 1398 100 10 90 0.5 12 1605.6 131 13.5 18.8 480
012.35/45.1400 14 1607.2 112 15.5 21.9
19 011.45.1600 1740 1460 110 1687 1513 45 26 M24 48 5 1602 1598 100 10 90 0.5 14 1817.2 127 15.8 21.9 550
012.35/45.1600 16 1820.8 111 18.1 25
20 011.45.1800 1940 1660 110 1887 1713 45 26 M24 48 5 1801
           1802
1798 100 10 90 0.5 14 2013.2 141 15.8 21.9 610
012.35/45.1800 16 2012.8 123 18.1 25
21 011.40/60.2000 2178 1825 144 2110 1891 48 33 M30 60 8 2001
           2002
1998 132 12 120 0.5 16 2268.8 139 24.1 33.3 1100
012.40/60.2000 18 2264.4 123 27.1 37.5
22 011.40/60.2240 2418 2065 144 2350 2131 48 33 M30 60 8 2241
           2242
2238 132 12 120 0.5 16 2492.8 153 24.1 33.3 1250
012.40/60.2240 18 2498.4 136 27.1 37.5
23 011.40/60.2500 2678 2325 144 2610 2391 56 33 M30 60 8 2501
           2502
2498 132 12 120 0.5 18 2768.4 151 27.1 37.5 1400
012.40/60.2500 20 2776 136 30.1 41.8
24 011.40/60.2800 2978 2625 144 2910 2691 56 33 M30 60 8 2802 2798 132 12 120 0.5 18 3074.4 168 27.1 37.5 1600
012.40/60.2800 20 3076 151 30.1 41.8
25 011.50/75.3150 3376 2922 174 3286 3014 56 45 M42 84 8 3152 3147 162 12 150















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