Product Description

1. Introduction of CZPT slewing bearings
CZPT is a professional manufacturer in slewing ring bearings since 1993. We can also design and make other standard and non-standard ball bearings, roller bearings and precision bearings as per customer’s different technical requirements.
Slewing bearing is also called slewing ring, slewing ring bearing, turntable bearing, and rotary bearing.
Slewing ring bearing is a bearing that CZPT to bear axial load, radial load and overturning torque. Under normal circumstances, slewing rings have their own mounting holes, lubricant holes and seal holes, to meet the different needs of the various host working under the various conditions;
On the other hand, slewing bearing itself has characteristics of compact structure, CZPT rotating convenient, easy to install and maintaining easily.
CZPT slewing ring bearings are usually used for low revolution while shaking and strained with an enormous axial force, moment and in some parts with radial force simultaneously.
Consequently the requirements for loading are stricter than ordinary bearings. If the selection of the slewing ring bearing has been wrong it will cause a great damage. Hence it is necessary to evaluate the exact forces acting on the slewing ring bearing and to select the suitable slewing ring bearings.

2. Structure
2.1 Slewing ring bearings have different types as per different structures:

Single row ball slewing bearings
Double row ball slewing bearings
Crossed roller slewing bearings
Triple row roller slewing bearings
Flange slewing bearings
2.2 The above slewing ring bearings can also be divided into 3 different types as per different transmissions:
Slewing ring bearings with no gear
Slewing ring bearings with external gear
Slewing ring bearings with internal gear

3. Features:
Slewing ring bearings have more features: Compact structure, reliable guide, simple installation, and easily maintenance

4. Application:

Slewing ring bearings can be widely used in lifting & transport machinery, mining machinery, construction machinery, port hoisting machinery, port oil transfer equipment, onshore and offshore crane, excavator, concrete machine, paper machine, plastic and rubber machine, weave machine, steel plant, electronic power plant, wind power generator, other construction and industry machines or equipments and other large rotary device.

External gear type:
D178794, 1787/6, 116752K, 176792, 176792K, 176792K2M, 1167/530, 1167/560, 1167/560K, 1167/560M, 1168/560, 11768/630, 1167/700, E787/760G2, 3-640, 3-640K, 787/800G, 71769/850Y, 71769/850G2K,
787/932G2, 787/960G2, 787/1000G2, 787/1260G2, 71169/1400Y, 71169/1400Y1, 787/1440G2, 787/1628G2, 787/1700KM, KDL900-6, LY-Q007, LY-Q007K, LY-Q571
Internal gear type:
2788/850K, 3-646G2, 2782/1000GK, 2787/1210G2, 2787/1400GK, 2787/1400GK1, 2787/1440,
2787/1440G, 2768/1440G, 2787/1525G2, 2788/1712, 2789/2230, 2789/2240G2, 2789/2735

 

Model Over all dimensions Mounting Dimension Structure dimensions Gear parameters External Gear Load        10 4 N Mass kg
D d H D1 D2 n1 n2 φ 1 φ 2 D3   d1 H1 h n3 φ 3 m b x Da Z
mm mm mm mm mm
1792/885 1056 885 83 1032 925 16 16 M16 17.5 986 988 75 12.5 8 62.5 0 1096 135 176 172
E1792/885 1056 885 83 1032 925 16 16 M16 17.5 986 988 75 12.5 8 62.5 0 1096 135 176 172
E1792/885K 1056 885 83 1032 925 16 16 M16 17.5 986 988 75 12.5 3 M10*1 8 62.5 0 1096 135 176 172
1797/885G 1150 885 115 1115 935 16 16 18 18 1571 1571 100 15 4 M8*1 5 80 0 1180 234 292 330
1797/1100G 1415 1100 115 1345 1160 24 18 21 21 1253 1255 100 15 4 M12*1.25 6 84 0 1452 240 270 497
1798/1100G2 1400 1100 140 1352 1160 26 26 24 26 1260 1264 126 21 4 M10*1 14 90 -0.24 1477.28 104 430 642
1798/1100G2K 1400 1100 145 1352 1160 26 26 24 26 1260 1264 131 26 4 M10*1 14 90 -0.24 1477.28 104 430 644
1797/1250G2 1548 1250 148 1512 1297 16 16 25 25 1403 1407 122 20 4 M10*1 12 100 0 1608 132 539 661
1797/1278G2 1595 1278 120 1535 1335 36 36 26 26 1428 1432 105 15 4 M10*1 12 90 1.15 1655.46 134 485 597
1797/1300G2 1705 1300 165 1644 1360 24 24 32 32 1504 1508 134 31 4 M10*1 14 85 -0.3 1783.6 126 578 1571
1792/1400G 1715 1400 110 1660 1460 42 42 26 26 1558 1562 95 17 4 M12*1.25 12 78 -0.3 1780.8 147 597 579
1792/1400G2 1715 1400 110 1660 1460 42 42 26 26 1558 1562 95 17 4 M12*1.25 12 78 -0.3 1780.8 147 597 579
1792/1400G2K 1715 1400 110 1660 1460 42 42 26 26 1558 1562 95 15 4 M12*1.25 12 78 -0.3 1780.8 147 597 579
1797/1460G2 1800 1460 125 1735 1525 32 36 26 26 1633 1637 110 10 4 M10*1 14 95 -0.3 1881.6 133 627 828
1797/1460G2K 1460 125 1735 1525 32 36 26 26 1633 1637 110 10 4 M10*1 10 115 0 1880 186 627 845
1797/1916G2 1916 150 2245 1980 42 42 34 34 2113 2117 130 15 3 M10*1 18 135 -0.4 2415.6 133 1150 1597
1797/2100G2 2600 2100 180 2540 2200 48 48 32 32 2368 2372 158 22 8 M10*1 18 130 0 2700 148 1100 2395
1797/2100G2K 2600 2100 180 2540 2200 48 48 32 32 2368 2372 158 22 8 M10*1 18 130 0 2700 148 1100 2392
1797/2460G2 2460 220 2930 2560 30 30 33 34 2745 2747 185 20 30 M12*1.25 14 200 0 3108 220 1368 4091
1797/2460G2U 2460 220 2930 2560 30 30 33 34 2745 2747 185 20 30 M12*1.25 14 200 0 3108 220 1368 4091
1797/2460G2K 3108 2460 220 2930 2560 30 30 33 34 2745 2747 200 35 15 ZG1/4in 14 200 0 3108 220 1368 4091
1797/2460G2K1 3108 2460 220 2930 2560 30 30 33 34 2745 2747 200 35 30 ZG1/4in 14 200 0 3108 220 1368 4091
1797/2500G2 2500 210 2990 2630 36 36 37 37 2818 2822 200 10 12 M14*1.5 25 200 0 3250 128 1996 4597
Model Over all dimensions Mounting Dimension Structure dimensions Gear parameters External Gear Load        10 4 N Mass kg
D d H D1 D2 n1 n2 φ 1 φ 2 D3   d1 H1 h n3 φ 3 m b x Da Z
mm mm mm mm mm
1797/2500K 2920 2500 260 3060 2622 36 36 40 40 2949 2916 240 60 36 ZG1/4in 18 190 0 3258 179 1996 5407
1797/2500G2K1 2920 2500 260 3060 2622 36 36 40 40 2949 2916 240 60 36 ZG1/4in 18 190 0 3258 179 1996 5407
1797/2600G 2600 200 3050 2700 60 60 35 35 2868 2872 180 20 6 M12*1.25 20 180 -0.18 3232.8 160 2030 3936
1797/2600G2 2600 200 3050 2700 60 60 35 35 2868 2872 180 20 18 ZG1/4in 20 180 -0.18 3232.8 160 2030 3936
1797/2600G2K 2600 200 3050 2700 60 60 35 35 2868 2872 180 20 4 14 20 180 -0.18 3232.8 160 2030 3936
1797/2600G2K1 2600 200 3050 2700 60 60 35 35 2868 2872 180 20 8 M10*1 20 180 -0.18 3232.8 160 2320 3558
1797/2635G 3332 2635 270 3240 2755 36 36 42 42 2998 3002 240 45 6 M12*1.25 20 200 0 3440 170 2950 5973
1797/2635G2 3332 2635 270 3240 2755 36 36 42 42 2998 3002 225 30 12 ZG1/4in 20 200 0 3440 170 2950 5973
1797/3230G 3970 3230 240 3820 3350 52 54 37 37 3578 3582 220 20 9 M12*1.25 25 200 0 4100 162 3520 7612
1797/3230GY 3970 3230 240 3820 3380 52 36 37 37 3578 3582 220 20 4 M12*1.25 25 200 0 4100 162 3520 7612
1797/3230G2 3970 3230 240 3820 3350 52 54 37 37 3578 3582 220 20 9 M12*1.25 25 200 0 4100 162 3520 7613
1797/3230G2K 3970 3230 240 3820 3350 52 54 37 37 3578 3582 220 20 8 14 25 200 0 4100 162 3520 7613
1797/3230G2k2 3970 3230 240 3820 3350 52 54 37 37 3578 3582 220 20 18 M12*1.25 22 200 0 4092 184 3520 7804
1797/3230G2k3 3940 3230 240 3820 3350 52 54 37 37 3578 3582 220 20 9 M12*1.25 20 200 0 4080 202 3593 7302
1797/3230G2Y 3970 3230 240 3820 3380 52 36 37 37 3578 3582 220 20 4 M12*1.25 25 200 0 4100 162 3593 7613
1797/3230G2Y2 3970 3230 240 3820 3380 52 36 37 37 3578 3582 220 20 4 M12*1.25 25 200 0 4100 162 3593 7613
1797/3230G2Y3 3230 240 3820 3380 52 36 37 37 3578 3582 220 20 4 M1.4*1.5 25 220 0 4100 162 3520 7686
1797/3230GK4 3970 3230 240 3820 3380 52 68 37 37 3578 3582 220 20 18 M1.4*1.5 25 200 0 4100 162 3520 7613
1797/3230GK5 3970 3230 240 3820 3350 52 54 37 37 3578 3582 220 20 4 M12*1.25 25 200 0 4100 162 3520 7613
1797/3230G2Y3K 3230 240 3820 3380 52 36 37 37 3578 3582 220 20 4 M12*1.25 25 220 0 4100 162 3520 7686
1797/3760G 4220 3760 240 4160 3840 48 48 32 32 3996 4004 210 55 4 M14*1.5 14 135 0 4326 307 3210 4396
1797/4250G 4940 4250 250 4840 4350 72 72 48 48 3996 4002 225 25 9 M16*1.5 30 200 0 5082 168 3210 8954

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Rolling Body: Roller Bearings
The Number of Rows: Single
Outer Dimension: 400mm-8000mm
Material: Bearing Steel
Spherical: Non-Aligning Bearings
Load Direction: Axial Bearing
Samples:
US$ 21000/Piece
1 Piece(Min.Order)

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Request Sample

Customization:
Available

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slewing bearing

How do Slewing Bearings Contribute to the Smooth Rotation of Cranes and other Heavy Machinery?

Slewing bearings play a vital role in ensuring the smooth and efficient rotation of cranes and other heavy machinery that require controlled movement. Their design and functionality are specifically tailored to handle the unique challenges posed by such applications. Here’s how slewing bearings contribute to the smooth rotation of cranes and heavy machinery:

  • Load Handling:

Crane operations involve lifting and moving heavy loads. Slewing bearings are designed to carry substantial axial, radial, and moment loads simultaneously. This load-handling capacity allows cranes to lift and transport heavy objects with precision.

  • Smooth Rotation:

Slewing bearings provide a smooth interface between the upper structure (superstructure) and the lower structure (substructure) of the machinery. This allows for controlled and precise rotation of the upper structure, enabling cranes to maneuver smoothly during lifting, loading, and unloading operations.

  • Efficient Torque Transmission:

During crane rotation, torque generated by the motor is transmitted through the slewing bearing to the upper structure. The bearing’s design ensures efficient torque transmission, minimizing energy losses and facilitating smooth rotation even under heavy loads.

  • Low Friction and Wear:

Slewing bearings are engineered to minimize friction and wear. This reduces the energy required for rotation and prevents premature wear that could affect the bearing’s performance and longevity.

  • High Stiffness:

Slewing bearings exhibit high stiffness, which contributes to the stability of the machinery during rotation. This stiffness ensures minimal deflection and maintains precise alignment, essential for safe and controlled movement.

  • Uniform Load Distribution:

The raceway design of slewing bearings promotes uniform load distribution among rolling elements. This prevents stress concentrations and uneven wear, enhancing the bearing’s durability and contributing to smooth operation.

  • Slow and Controlled Movement:

Crane operations often require slow and controlled rotation, especially when positioning heavy loads. Slewing bearings facilitate this type of movement, allowing operators to make precise adjustments.

  • Customization for Specific Applications:

Slewing bearings can be customized to match the specific requirements of different crane designs and applications. This customization ensures optimal performance and longevity in various operational scenarios.

In summary, slewing bearings are essential components that enable the smooth and precise rotation of cranes and heavy machinery. Their load-carrying capacity, low friction, high stiffness, and ability to transmit torque efficiently contribute to the reliable and controlled movement required for various lifting and loading operations.

slewing bearing

What are the Signs of a Damaged or Worn-out Slewing Bearing that Requires Replacement?

Identifying the signs of a damaged or worn-out slewing bearing is essential for preventing potential failures and ensuring equipment reliability. Here are common indicators that a slewing bearing may require replacement:

  • Unusual Noise:

If you notice grinding, clicking, or any abnormal noises during operation, it could be a sign of wear or misalignment in the slewing bearing.

  • Increased Vibration:

Excessive vibration or shaking during rotation could indicate misalignment, damage, or uneven wear in the slewing bearing.

  • Irregular Movement:

If the machinery exhibits irregular or jerky movement instead of smooth rotation, it might be due to a damaged slewing bearing.

  • Uneven Load Distribution:

Uneven distribution of loads can lead to accelerated wear on specific sections of the bearing, causing premature failure.

  • Abnormal Heat Generation:

If the slewing bearing becomes excessively hot during operation, it may suggest friction, misalignment, or lack of proper lubrication.

  • Excessive Play or Clearance:

Too much axial or radial play in the bearing can indicate wear, misalignment, or component fatigue, requiring inspection and potential replacement.

  • Leakage of Lubricant:

If lubricant leaks from the bearing or seals, it may signify damage to the sealing mechanism or an internal issue that needs attention.

  • Visible Wear or Damage:

Inspect the bearing for visible signs of wear, corrosion, pitting, or other forms of damage. Cracks, dents, or deformation are clear indicators of potential problems.

  • Reduced Performance:

If the machinery’s performance deteriorates, such as decreased rotation speed, reduced load capacity, or increased power consumption, it could be due to a failing slewing bearing.

  • Increased Maintenance Frequency:

If you find yourself needing to perform more frequent maintenance or repairs on the bearing, it might indicate that the bearing is nearing the end of its service life.

  • Manufacturer’s Service Life:

Consult the manufacturer’s guidelines for the expected service life of the slewing bearing. If the bearing is approaching this limit, it’s advisable to consider replacement.

If any of these signs are observed, it’s important to consult with experts and consider replacing the slewing bearing to prevent further damage and ensure the safe and efficient operation of machinery.

slewing bearing

What are the Main Applications of Slewing Bearings?

Slewing bearings find wide applications across various industries due to their ability to handle complex loads and facilitate rotational movement. Some of the main applications of slewing bearings include:

  • Construction Machinery: Slewing bearings are essential components in construction equipment such as excavators, cranes, concrete pumps, and drilling rigs. They enable smooth rotation and movement, supporting heavy loads and dynamic forces.
  • Wind Turbines: In wind energy systems, slewing bearings are used to orient the rotor blades and nacelle to capture maximum wind energy. Their durability and load-bearing capacity make them crucial for efficient wind turbine operation.
  • Mining Equipment: Slewing bearings are used in mining machinery like stacker-reclaimers and conveyor systems. They enable the movement of large loads, contributing to efficient material handling and processing.
  • Marine Applications: Slewing bearings are employed in ship cranes, davits, and other marine equipment. They assist in cargo handling, ship maintenance, and various onboard operations.
  • Aerial Work Platforms: Slewing bearings are integral to aerial platforms and access equipment. They enable controlled and safe movement for workers at elevated heights.
  • Robotics and Automation: Slewing bearings play a role in industrial robots and automation systems. They facilitate precise and controlled rotational movement in manufacturing processes.
  • Medical Equipment: Some medical imaging equipment, such as CT scanners and MRI machines, use slewing bearings for rotational movement, contributing to accurate diagnostics.
  • Defence and Aerospace: Slewing bearings are employed in defense equipment like radar systems and missile launchers, as well as in aerospace applications like aircraft landing gear.

These are just a few examples of the many applications of slewing bearings across different industries. Their ability to handle diverse loads and rotational movements makes them versatile components in various machinery and equipment.

China Standard Slewing Ring Bearing External Gear Swing Bearing Roller Bearing for Material Stacker Reclaimer 1797/3230   deep groove ball bearingChina Standard Slewing Ring Bearing External Gear Swing Bearing Roller Bearing for Material Stacker Reclaimer 1797/3230   deep groove ball bearing
editor by CX 2024-04-15