Slewing Bearings

Ball and Roller Combination Slewing Bearings

Ball and Roller Combination Slewing Bearing comprises an outer ring, an inner ring, rollers, and steel balls. The inner and outer rings have a horizontal linear raceway and a spherical raceway, and the rollers are located in the flat. The steel balls are located in the spherical raceway in the linear raceway. The horizontally placed rollers bear the axial force, the radial force is taken by the steel ball, and both jointly hold the tilting moment. It can bring not only large axial force but also bear particular tilting moment and radial force and has a small sectional size. This product is mainly used in construction machinery and equipment such as stackers and reclaimers.

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Ball and Roller Combination Slewing Bearing comprises an outer ring, an inner ring, rollers, and steel balls. The inner and outer rings have a horizontal linear raceway and a spherical raceway, and the rollers are located in the flat. The steel balls are located in the spherical raceway in the linear raceway. The horizontally placed rollers bear the axial force, the radial force is taken by the steel ball, and both jointly hold the tilting moment. It can bring not only large axial force but also bear particular tilting moment and radial force and has a small sectional size. This product is mainly used in construction machinery and equipment such as stackers and reclaimers.

Product parameters

External gear type Boundary dimensions          Bolt hole diameter               Structure dimensions         Gear parameters Basic load ratings weight
external gear type De d H D1 D2 n φ M D3 d1 H1 h n1 φ3 m Z b X Coa kg
mm mm mm mm mm mm 10⁴
221.32.3550.432 3772.8 3358 159 3638 3418 76 30 27 3591 3509 143 50 10 M10X1 16 232 109 +1.0 320 2028
221.32.3550.433 3597
221.32.3750.432 3980.8 3558 159 3846 3618 80 30 27 3791 3709 143 50 10 M10X1 16 246 109 +0.5 320 2186
221.32.3750.433 3797
221.32.4000.432 4220.8 3808 159 4086 3868 84 30 27 4041 3595 143 50 12 M10X1 16 261 109 +0.5 320 2278
221.32.4000.433 4047
221.32.4250.432 4476.8 4058 159 4342 4118 90 30 27 4291 4209 143 50 12 M10X1 16 276 109 +1.0 320 2455
221.32.4250.433 4287
221.36.4000.432 4244.4 3792 175 4095 3858 76 33 30 4045 3955 159 50 12 M10X1 18 232 125 +1.0 391 2792
221.36.4000.433 4051
221.36.4250.432 4496.4 4042 175 4347 4108 80 33 30 4295 4205 159 50 12 M10X1 18 247 125 +0.5 391 2981
221.36.4250.433 4301
221.36.4500.432 4748.4 4292 175 4599 4358 84 33 30 4545 4455 159 50 14 M10X1 18 261 125 +0.5 391 3171
221.36.4500.433 4554
221.36.4750.432 5000.4 4542 175 4851 4608 90 33 30 4795 4705 159 50 14 M10X1 18 275 125 +0.5 391 3363
221.36.4750.433 4801
221.40.4500.432 4776 4276 183 4612 4348 72 36 33 4550 4450 167 50 14 M10X1 20 236 133 +0.5 463 3973
221.40.4500.432 4556
221.40.4750.432 5016 4526 183 4852 4598 76 36 33 4800 4700 167 50 14 M10X1 20 248 133 +0.5 463 3796

Note:

1. N1 is the number of lubrication holes. Oil cup M10×1JB/T7940.1~JB/T7940.2. The user can specify the oil hole position according to the actual application.

2. N-∅ can be changed to threaded hole, threaded hole diameter M, thread depth 2M. The structure diagram 1 refers to the model tail number 432 series; the structure diagram 2 refers to the model tail number 433 series.

3. The specifications in this sample are standard products, and the inner and outer diameters are free tolerances. If the main engine and the slewing bearing have matching requirements, please indicate the matching size and accuracy in the contract or contract attachment (such as technical agreement).

4. The listed products are our regular products. If you have other special requirements, please contact our company.

Slewing bearings application

Slewing bearings are widely used in large-scale slewing devices of hoisting machinery, mining machinery, construction machinery, port machinery, marine machinery, and high-precision radar machinery and missile launchers. At the same time, it can also design, develop and produce various special structure slewing bearings according to the specific requirements of users.In addition to various engineering machinery, the application range of slewing bearings has gradually expanded. Equipment platforms such as port equipment, metallurgical equipment, and drilling platforms have begun to use slewing bearings to replace original bearings on a large scale. For example the following…

  • Port equipment: port cranes, reach stackers;
  • New energy equipment: wind power equipment, solar power equipment;
  • Metallurgical equipment: metallurgical cranes, ladle turrets, steel grabbing machines, clay guns, oxygen blowing devices;
  • Amusement equipment: Ferris wheel, etc.;
  • Airport equipment: Airport refueling machine;
  • Military equipment: radars, tanks, etc.;
  • Robots: palletizing robots, welding robots, manipulators;
  • Medical equipment: gamma knife;
  • Environmental protection equipment: mud scraper;
  • Parking equipment: tower garage;
  • Drilling platform equipment, kitchen equipment, numerical control equipment (wire cutting machine, quenching machine tool), brick machine.