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The Slewbearingtec is committed to providing high-precision customized external gear slewing bearings for global industrial customers. By optimizing the raceway structure and gear parameters, it can meet the demanding needs of heavy-duty equipment such as excavators and cranes. Slewbearingtec is the real source manufacturing factory. We skip the middleman and directly connect with customers, providing you with highly competitive factory direct sales prices and faster non-standard customized delivery experience.
customized external gear slewing bearing important parameters
through precise control of intermediate frequency induction quenching, the raceway hardness reaches 55-62HRC, and the hardened layer depth is kept at 3-5mm, which effectively improves the anti-spalling ability and prolongs the life of products by about 30% compared with ordinary processes.
According to the output torque of the reducer, the customized displacement coefficient and pressure angle are supported to ensure that the gear meshing coincidence degree improves the 15%, significantly reduces the operating noise and reduces the impact wear.
strict selection of large steel mills 50Mn or 42CrMo high-quality steel, through the overall quenching and tempering treatment to improve the organization and performance, so that it in extreme cold or high impact load still maintain excellent fatigue resistance.
equipped with high-elastic nitrile rubber sealing ring and special labyrinth seal cavity, can effectively isolate the dust and moisture on the construction site, ensure the internal lubrication and cleaning of the raceway, and reduce the abnormal maintenance of the 50%.
through the matching of precision grinding teeth and high-precision rollers, the radial runout of the slewing bearing is controlled within 0.05mm, which perfectly meets the demanding requirements of precision welding manipulators and other equipment for smooth operation.
Under the premise of ensuring the rated carrying capacity, the cross-sectional shape is optimized through computer simulation to reduce the weight of the product by about 10%, which directly helps the host manufacturer to reduce the equipment load and reduce the logistics assembly cost.
| Parameter name | Specifications/Technical Standards |
| Outer diameter range | 200mm to 5000mm |
| Inner diameter range | 100mm to 4500mm |
| Scroll body type | Steel balls or crossed cylindrical rollers |
| Raceway quenching hardened layer depth | 3mm to 6mm |
| Tooth surface heat treatment | Surface hardening or root hardening are both options. |
| Surface treatment | Rust-preventive oil, spray painting or galvanizing treatment |
| Lubrication method | Pre-lubricated grease, supports automatic lubrication system |
| Axial/Radial Clearance | Customized according to customer precision requirements (e.g., zero backlash). |
Slewbearingtec customized external gear slewing bearing adopts the whole industry chain production mode, and each process can be traced back. Compared with similar products, our raceway hardness layer is more uniform, and the reliability is higher under high-frequency steering conditions. Our design team has a deep application background and can provide load simulation analysis for specific working conditions to ensure that customized products can still maintain extremely high rotation accuracy in complex torque environments.
we have significantly improved the bending strength and wear resistance of the tooth root through the optimization of positive displacement and local induction hardening technology.
we provide a full range of installation and connection design services, completely eliminating the hidden danger of deformation of slewing bearing caused by secondary processing.
the routine maintenance period of the product is extended by more than 40% Slewbearingtec the optimized raceway curvature and the automatic lubrication hole design.
such users need to withstand the huge overturning moment of customized products. Our external tooth support can be perfectly matched with the mainstream reducer to meet the stringent requirements of high-strength, all-weather continuous operation on the construction site.
In the development of large industrial robots or rotary tables, engineers need extremely high positioning accuracy. We offer precision customized services that meet the very high standards of radial runout and axial play.
due to the working environment with salt spray corrosion and high load, users need to go through special anti-corrosion treatment and heavy load check products. Our material selection and coating process can effectively cope with the marine environment.
In large centrifuges or waste disposal turntables, users often face the problem of tight space but irregular loads. By optimizing the structural layout, we provide compact transmission solutions for such non-standard equipment.
before installation, the bearing surface must be thoroughly cleaned to remove oil stains, welding slag and burrs. Ensure that the flatness error of the installation reference plane is within the specified tolerance range to prevent permanent deformation of the slewing bearing due to uneven force.
high strength bolts of the grade recommended by the manufacturer must be used. Tighten three times in a star-shaped alternating sequence, and use a torque wrench to strictly calibrate to ensure that each bolt can provide a balanced and sufficient preload.
When installing products with external teeth, the meshing clearance between the pinion and the large ring gear should be adjusted at the highest point of the radial runout of the ring gear. The gap value usually needs to be maintained at about 0.3 to 0.4 times the modulus.
The filling hole must be filled with the right amount of high performance grease before the initial operation. Slowly rotate for more than three circles under no load, and make sure that the gear meshes smoothly, there is no abnormal noise and the sealing ring does not fall off before it can be put into operation.
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Welcome to our Frequently Asked Questions page. We have compiled answers to common questions you may have, hoping to provide you with clear and quick solutions. If you cannot find the information you need here, please feel free to contact our customer support team.
The Slewbearingtec is committed to providing high-precision customized external gear slewing bearings for global industrial customers. By optimizing the raceway structure and gear parameters, it can meet the demanding needs of heavy-duty equipment such as excavators and cranes. Slewbearingtec is the real source manufacturing factory. We skip the middleman and directly connect with customers, providing you with highly competitive factory direct sales prices and faster non-standard customized delivery experience.
50Mn or 42CrMo
Inner and outer ring material
55HRC to 62HRC
Raceway quenching hardness
ISO 1328 class 8 to 10
Gear accuracy class
through precise control of intermediate frequency induction quenching, the raceway hardness reaches 55-62HRC, and the hardened layer depth is kept at 3-5mm, which effectively improves the anti-spalling ability and prolongs the life of products by about 30% compared with ordinary processes.
According to the output torque of the reducer, the customized displacement coefficient and pressure angle are supported to ensure that the gear meshing coincidence degree improves the 15%, significantly reduces the operating noise and reduces the impact wear.
strict selection of large steel mills 50Mn or 42CrMo high-quality steel, through the overall quenching and tempering treatment to improve the organization and performance, so that it in extreme cold or high impact load still maintain excellent fatigue resistance.
equipped with high-elastic nitrile rubber sealing ring and special labyrinth seal cavity, can effectively isolate the dust and moisture on the construction site, ensure the internal lubrication and cleaning of the raceway, and reduce the abnormal maintenance of the 50%.
through the matching of precision grinding teeth and high-precision rollers, the radial runout of the slewing bearing is controlled within 0.05mm, which perfectly meets the demanding requirements of precision welding manipulators and other equipment for smooth operation.
Under the premise of ensuring the rated carrying capacity, the cross-sectional shape is optimized through computer simulation to reduce the weight of the product by about 10%, which directly helps the host manufacturer to reduce the equipment load and reduce the logistics assembly cost.
| Parameter name | Specifications/Technical Standards |
| Outer diameter range | 200mm to 5000mm |
| Inner diameter range | 100mm to 4500mm |
| Scroll body type | Steel balls or crossed cylindrical rollers |
| Raceway quenching hardened layer depth | 3mm to 6mm |
| Tooth surface heat treatment | Surface hardening or root hardening are both options. |
| Surface treatment | Rust-preventive oil, spray painting or galvanizing treatment |
| Lubrication method | Pre-lubricated grease, supports automatic lubrication system |
| Axial/Radial Clearance | Customized according to customer precision requirements (e.g., zero backlash). |
we have significantly improved the bending strength and wear resistance of the tooth root through the optimization of positive displacement and local induction hardening technology.
we provide a full range of installation and connection design services, completely eliminating the hidden danger of deformation of slewing bearing caused by secondary processing.
the routine maintenance period of the product is extended by more than 40% Slewbearingtec the optimized raceway curvature and the automatic lubrication hole design.
such users need to withstand the huge overturning moment of customized products. Our external tooth support can be perfectly matched with the mainstream reducer to meet the stringent requirements of high-strength, all-weather continuous operation on the construction site.
In the development of large industrial robots or rotary tables, engineers need extremely high positioning accuracy. We offer precision customized services that meet the very high standards of radial runout and axial play.
due to the working environment with salt spray corrosion and high load, users need to go through special anti-corrosion treatment and heavy load check products. Our material selection and coating process can effectively cope with the marine environment.
In large centrifuges or waste disposal turntables, users often face the problem of tight space but irregular loads. By optimizing the structural layout, we provide compact transmission solutions for such non-standard equipment.
before installation, the bearing surface must be thoroughly cleaned to remove oil stains, welding slag and burrs. Ensure that the flatness error of the installation reference plane is within the specified tolerance range to prevent permanent deformation of the slewing bearing due to uneven force.
high strength bolts of the grade recommended by the manufacturer must be used. Tighten three times in a star-shaped alternating sequence, and use a torque wrench to strictly calibrate to ensure that each bolt can provide a balanced and sufficient preload.
When installing products with external teeth, the meshing clearance between the pinion and the large ring gear should be adjusted at the highest point of the radial runout of the ring gear. The gap value usually needs to be maintained at about 0.3 to 0.4 times the modulus.
The filling hole must be filled with the right amount of high performance grease before the initial operation. Slowly rotate for more than three circles under no load, and make sure that the gear meshes smoothly, there is no abnormal noise and the sealing ring does not fall off before it can be put into operation.
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