SWBTEC
Slew Drive Bearing
Slew drive bearing is the 1 high-efficiency transmission component integrated with slewing bearing, worm gear and housing. Through extremely high torque output and self-locking performance, it provides compact, accurate and reliable rotation power for automation equipment and accepts batch orders.
Important parameters Bearing Slew Drive：
1kNm-100kNm
Output torque range:
30:1-150:1
Reduction ratio range:
≤ 0.05 °-0.15 °
Precision backlash:
Slew Drive Bearing Characteristics
Under heavy load to improve the transmission stability:
the use of hourglass worm multi-tooth contact technology, the contact area increased by 200, under heavy load can be transmission stability increased by 30%, significantly reducing the vibration caused by impact.
Reduce the design space occupied by the automation system:
Compared with the traditional split reducer, the torque output capacity of the Slew drive bearing is increased by more than 40% under the same volume, greatly reducing the design space occupied by the automation system and optimizing the whole structure.
Reverse self-locking characteristics:
with excellent reverse self-locking characteristics, in the power interruption or strong external interference (such as wind load) without additional braking device can maintain a stable position, effectively protect the precision drive chain from physical damage.
Fully sealed and high protection grade:
the protection grade of the whole machine reaches IP66, and the double lip skeleton oil seal is adopted to prevent water vapor and dust from invading. In sandstorms or high humidity and harsh environments, the internal grease pollution rate is reduced by 90%, and the maintenance period is prolonged by 2 times.
Highly integrated plug-and-play:
integrates bearings, gears, housings and motor interfaces, simplifies the research and development selection process, reduces assembly hours by 60% compared with the split scheme, and reduces the risk of installation errors due to cumulative tolerances of multiple components.
C5-M grade anti-corrosion treatment:
the shell has been tested and verified by salt spray for more than 1000 hours, and the coating has excellent wear resistance, ensuring the service life of more than 15 years in harsh scenarios such as marine environment and photovoltaic desert.
Structured detailed parameter table
| Model Specifications | Overturning moment (kNm) | Output Torque (kNm) | Static holding torque (kNm) | Gear ratio | Reference weight (kg) |
| SDB-03 | 1.1 | 0.4 | 2.0 | 62:1 | 15 |
| SDB-07 | 13.5 | 1.5 | 10.4 | 73:1 | 25 |
| SDB-09 | 33.9 | 6.5 | 38.0 | 61:1 | 48 |
| SDB-12 | 54.3 | 7.5 | 43.0 | 78:1 | 75 |
| SDB-14 | 72.0 | 8.0 | 48.0 | 85:1 | 102 |
| SDB-17 | 135.6 | 10.0 | 72.3 | 102:1 | 155 |
| SDB-21 | 203.0 | 15.0 | 105.0 | 125:1 | 230 |
| SDB-25 | 271.0 | 18.0 | 158.0 | 150:1 | 350 |
Slew Drive Bearing Comparison Points
Compared with the traditional split scheme of “motor + reducer + slewing ring”, Slew drive bearing has the core advantage of simple physical package and excellent load management. It not only solves the problem of axis centering during multi-component installation, but also eliminates the multi-stage accumulated backlash in the transmission chain through the preload design, which makes the repeated positioning accuracy of the rotary motion significantly improved.
Space redundancy caused by complex transmission chain:
the transmission and bearing functions are integrated to solve the problem that the automatic arm or medical equipment cannot be arranged with large torque mechanism due to space limitation.
High-frequency shutdown maintenance under harsh working conditions:
The closed structure avoids the exposure of the tooth surface, and solves the problem of rapid decline in rotation accuracy caused by dry wear of gears in open-air or dust workshops.
Transmission failure under sudden load impact:
The high-rigidity worm gear structure effectively absorbs the radial and overturning moments, and solves the bearing deformation that is easy to produce when the split structure is subjected to sudden load changes.
Slew Drive Bearing Applicable crowd
Photovoltaic tracking system manufacturer:
Slew drive bearing is the core transmission part of single/double axis solar tracking bracket, which can ensure that the panel is accurately aligned with sunlight all day long and remains stationary in strong wind environment, thus improving power generation income.
Industrial robot and automation developers:
suitable for palletizer, welding displacement machine and industrial robot arm joint parts, to meet the high torque output and angle control under high load rotation, to ensure the consistency of the motion trajectory of continuous operation.
Designers of special vehicles and construction machinery:
In the slewing mechanism of cranes, aerial work platforms and small excavators, this product can withstand extremely high overturning moments, provide a smooth slewing experience and enhance the safety of the whole machine.
Medical imaging equipment engineering team:
In large medical rotating platforms such as CT machines and MRI, the low noise, smooth operation and zero vibration characteristics of Slew drive bearing are the technical guarantee for obtaining high-quality images and ensuring patient comfort.
Slew Drive Bearing instructions
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Yes. The product design supports horizontal, vertical or inclined installation. However, it should be noted that the self-weight load distribution inside the bearing will change during vertical installation. It is recommended to confirm the dynamic distribution of the overturning moment to the engineer during selection to ensure that the motor and seal are located reasonably.
Most precision Slew drive bearing are preset at the factory with the best backlash. If the backlash is subsequently increased due to long-term wear, fine adjustments can be made by adjusting the eccentric mechanism or the axial shim of the worm, but it is recommended that professional technicians operate to prevent excessive extrusion.
Worm gear models with large transmission ratios (usually> 40:1) have natural static self-locking capability. No additional brakes are required for low inertia applications; however, in scenarios with high momentum, high speed or strict dynamic positioning requirements, it is still recommended to install an electromagnetic brake at the motor end.
The core material is mostly 42CrMo or 50Mn and tempered, with good toughness. In an extremely low temperature environment, the key is to select low-temperature lubricating grease and ensure that the seal material is not embrittled. The low temperature resistance scheme can be customized according to the requirements before leaving the factory.
There may be a slight mechanical sound at the initial stage of startup because the grease is not completely distributed evenly. Under normal circumstances, the noise will be reduced rapidly after several cycles of no-load operation. If the noise is accompanied by current fluctuation or vibration, please check the flatness of the installation plane and the bolt preload.
Under normal circumstances, it is recommended to add lubricating grease every 100-200 operating hours. The bolt pre-tightening torque shall be checked every six months. In coastal or dusty environments, it is recommended to shorten the seal inspection cycle to ensure that there is no physical damage to the protective lip.
Slew Drive Bearing
Slew drive bearing is the 1 high-efficiency transmission component integrated with slewing bearing, worm gear and housing. Through extremely high torque output and self-locking performance, it provides compact, accurate and reliable rotation power for automation equipment and accepts batch orders.
Output torque range:
1kNm-100kNm
Reduction ratio range:
30:1-150:1
Precision backlash:
≤ 0.05 °-0.15 °
Slew Drive Bearing Characteristics
Under heavy load to improve the transmission stability:
the use of hourglass worm multi-tooth contact technology, the contact area increased by 200, under heavy load can be transmission stability increased by 30%, significantly reducing the vibration caused by impact.
Reduce the design space occupied by the automation system:
Compared with the traditional split reducer, the torque output capacity of the Slew drive bearing is increased by more than 40% under the same volume, greatly reducing the design space occupied by the automation system and optimizing the whole structure.
Reverse self-locking characteristics:
with excellent reverse self-locking characteristics, in the power interruption or strong external interference (such as wind load) without additional braking device can maintain a stable position, effectively protect the precision drive chain from physical damage.
Fully sealed and high protection grade:
the protection grade of the whole machine reaches IP66, and the double lip skeleton oil seal is adopted to prevent water vapor and dust from invading. In sandstorms or high humidity and harsh environments, the internal grease pollution rate is reduced by 90%, and the maintenance period is prolonged by 2 times.
Highly integrated plug-and-play:
integrates bearings, gears, housings and motor interfaces, simplifies the research and development selection process, reduces assembly hours by 60% compared with the split scheme, and reduces the risk of installation errors due to cumulative tolerances of multiple components.
C5-M grade anti-corrosion treatment:
the shell has been tested and verified by salt spray for more than 1000 hours, and the coating has excellent wear resistance, ensuring the service life of more than 15 years in harsh scenarios such as marine environment and photovoltaic desert.
Structured detailed parameter table
| Model Specifications | Overturning moment (kNm) | Output Torque (kNm) | Static holding torque (kNm) | Gear ratio | Reference weight (kg) |
| SDB-03 | 1.1 | 0.4 | 2.0 | 62:1 | 15 |
| SDB-07 | 13.5 | 1.5 | 10.4 | 73:1 | 25 |
| SDB-09 | 33.9 | 6.5 | 38.0 | 61:1 | 48 |
| SDB-12 | 54.3 | 7.5 | 43.0 | 78:1 | 75 |
| SDB-14 | 72.0 | 8.0 | 48.0 | 85:1 | 102 |
| SDB-17 | 135.6 | 10.0 | 72.3 | 102:1 | 155 |
| SDB-21 | 203.0 | 15.0 | 105.0 | 125:1 | 230 |
| SDB-25 | 271.0 | 18.0 | 158.0 | 150:1 | 350 |
Slew Drive Bearing Comparison Points
Compared with the traditional split scheme of “motor + reducer + slewing ring”, Slew drive bearing has the core advantage of simple physical package and excellent load management. It not only solves the problem of axis centering during multi-component installation, but also eliminates the multi-stage accumulated backlash in the transmission chain through the preload design, which makes the repeated positioning accuracy of the rotary motion significantly improved.
Space redundancy caused by complex transmission chain:
the transmission and bearing functions are integrated to solve the problem that the automatic arm or medical equipment cannot be arranged with large torque mechanism due to space limitation.
High-frequency shutdown maintenance under harsh working conditions:
The closed structure avoids the exposure of the tooth surface, and solves the problem of rapid decline in rotation accuracy caused by dry wear of gears in open-air or dust workshops.
Transmission failure under sudden load impact:
The high-rigidity worm gear structure effectively absorbs the radial and overturning moments, and solves the bearing deformation that is easy to produce when the split structure is subjected to sudden load changes.
Slew Drive Bearing Applicable crowd
Photovoltaic tracking system manufacturer:
Slew drive bearing is the core transmission part of single/double axis solar tracking bracket, which can ensure that the panel is accurately aligned with sunlight all day long and remains stationary in strong wind environment, thus improving power generation income.
Industrial robot and automation developers:
suitable for palletizer, welding displacement machine and industrial robot arm joint parts, to meet the high torque output and angle control under high load rotation, to ensure the consistency of the motion trajectory of continuous operation.
Designers of special vehicles and construction machinery:
In the slewing mechanism of cranes, aerial work platforms and small excavators, this product can withstand extremely high overturning moments, provide a smooth slewing experience and enhance the safety of the whole machine.
Medical imaging equipment engineering team:
In large medical rotating platforms such as CT machines and MRI, the low noise, smooth operation and zero vibration characteristics of Slew drive bearing are the technical guarantee for obtaining high-quality images and ensuring patient comfort.
Slew Drive Bearing instructions
Know Us and Contact Us
Get a Free Quote Today.
Yes. The product design supports horizontal, vertical or inclined installation. However, it should be noted that the self-weight load distribution inside the bearing will change during vertical installation. It is recommended to confirm the dynamic distribution of the overturning moment to the engineer during selection to ensure that the motor and seal are located reasonably.
Most precision Slew drive bearing are preset at the factory with the best backlash. If the backlash is subsequently increased due to long-term wear, fine adjustments can be made by adjusting the eccentric mechanism or the axial shim of the worm, but it is recommended that professional technicians operate to prevent excessive extrusion.
Worm gear models with large transmission ratios (usually> 40:1) have natural static self-locking capability. No additional brakes are required for low inertia applications; however, in scenarios with high momentum, high speed or strict dynamic positioning requirements, it is still recommended to install an electromagnetic brake at the motor end.
The core material is mostly 42CrMo or 50Mn and tempered, with good toughness. In an extremely low temperature environment, the key is to select low-temperature lubricating grease and ensure that the seal material is not embrittled. The low temperature resistance scheme can be customized according to the requirements before leaving the factory.
There may be a slight mechanical sound at the initial stage of startup because the grease is not completely distributed evenly. Under normal circumstances, the noise will be reduced rapidly after several cycles of no-load operation. If the noise is accompanied by current fluctuation or vibration, please check the flatness of the installation plane and the bolt preload.
Under normal circumstances, it is recommended to add lubricating grease every 100-200 operating hours. The bolt pre-tightening torque shall be checked every six months. In coastal or dusty environments, it is recommended to shorten the seal inspection cycle to ensure that there is no physical damage to the protective lip.
