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SWBTEC external gear slewing bearing realizes high torque output and smooth rotation through precision gear transmission, and the key raceway adopts deep induction hardening process. As a source manufacturing plant, SWBTEC has a complete processing chain, eliminating middleman costs through the direct supply model, to provide you with a very competitive ex-factory price, transparent production progress and faster delivery speed.
using high-quality 42CrMo tempered steel, tensile strength increased by 20%, to ensure that the bearing matrix does not deform under high impact conditions, significantly reducing the risk of fracture.
gear accuracy reaches international standards, tooth surface clearance is controlled within 0.05mm, transmission stability is improved by 40%, and operating noise and mechanical vibration are effectively reduced.
The depth of the raceway hardening layer is 3 to 5mm, with high hardness standards, the wear resistance is increased by 5 times, so that the product has a design life of up to 10 years under high frequency rotation.
equipped with customized nitrile rubber sealing ring, effectively isolating external dust and moisture from invading the raceway, reducing the maintenance frequency due to lubrication failure by more than 60%.
The internal structure has been topologically optimized, and the axial bearing capacity has been increased by 15%, achieving a higher strength ratio in a compact space, suitable for the rotation requirements of a variety of heavy equipment.
each set of bearings are tested by 100% magnetic particle inspection and ultrasonic testing before leaving the factory to eliminate the hidden dangers of tiny cracks and ensure the safety and stability of use in extreme heavy load environments.
| Parameter name | Technical indicators | Industry Standard Reference |
| Inner and outer ring materials | 42CrMo / 50Mn | GB/T 3077 / JB/T 6361 |
| Scroll body material | GCr15 bearing steel | GB/T 18254 |
| Gear type | Standard external gear / hardened external gear | ISO 1328 |
| Tooth surface hardness | 45-55 HRC (Induction Hardening) | JB/T 10839 |
| hardening of raceway | 55-62 HRC | JB/T 10839 |
| Sealing type | Nitrile butadiene rubber (NBR) bidirectional seal | Industrial-grade sealing standards |
| radial runout | 0.05 – 0.20 mm | Better than national standards |
| Operating temperature | -30℃ to +70℃ | All-weather working environment |
| Delivery time | 25-40 days | It depends on the complexity of the customization. |
We optimize the design of the tooth root fillet to effectively reduce stress concentration. Under high-frequency starting and braking conditions, the fatigue life of the tooth is longer than similar products by 2 years.
We optimize the design of the tooth root fillet to effectively reduce stress concentration. Under high-frequency starting and braking conditions, the fatigue life of the tooth is longer than similar products by 2 years.
Our external gear slewing ring adopts automatic CNC gear hobbing process to ensure the tolerance consistency of each 1 tooth, which greatly reduces the additional wear on the drive pinion.
for heavy-duty lifting equipment, through the precise tooth heat treatment process, to solve the large modulus gear in the overload conditions easy to break teeth and tooth industry stubborn disease.
provides core slewing components for tower cranes and crawler excavators to meet the needs of the host plant for high reliability, high load capacity and long-term stable supply.
Yaw and pitch systems for wind turbines provide extremely high corrosion resistance and maintenance-free cycles in harsh outdoor and offshore environments.
for large-scale handling robots and automated production lines, providing high-precision rotary positioning support to meet its strict requirements for motion stability and repeated positioning accuracy.
suitable for fire trucks, dock cranes and aerial work vehicles, through the external gear transmission to simplify the design of the whole machine, to provide a more direct drive scheme and compact installation structure.
The flatness of the installation plane must be controlled within 0.1mm to ensure that the bearing is evenly stressed after installation and prevent the rotation resistance from increasing due to local overload.
bolts of grade 10.9 or above must be used and tightened three times in a star-shaped symmetrical sequence according to the specified torque to ensure the force balance of the connection parts.
by adjusting the center distance between the drive pinion and the external gear, the meshing gap is set in a reasonable range, and the tooth surface is coated with extreme pressure grease.
add grease through the grease nozzle every 150 to 200 hours, and rotate the bearing synchronously to ensure that the grease covers the raceway surface evenly.
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SWBTEC external gear slewing bearing realizes high torque output and smooth rotation through precision gear transmission, and the key raceway adopts deep induction hardening process. As a source manufacturing plant, SWBTEC has a complete processing chain, eliminating middleman costs through the direct supply model, to provide you with a very competitive ex-factory price, transparent production progress and faster delivery speed.
42CrMo
Material
external gear
Tooth type
55-62HRC
Raceway hardness
using high-quality 42CrMo tempered steel, tensile strength increased by 20%, to ensure that the bearing matrix does not deform under high impact conditions, significantly reducing the risk of fracture.
gear accuracy reaches international standards, tooth surface clearance is controlled within 0.05mm, transmission stability is improved by 40%, and operating noise and mechanical vibration are effectively reduced.
The depth of the raceway hardening layer is 3 to 5mm, with high hardness standards, the wear resistance is increased by 5 times, so that the product has a design life of up to 10 years under high frequency rotation.
equipped with customized nitrile rubber sealing ring, effectively isolating external dust and moisture from invading the raceway, reducing the maintenance frequency due to lubrication failure by more than 60%.
The internal structure has been topologically optimized, and the axial bearing capacity has been increased by 15%, achieving a higher strength ratio in a compact space, suitable for the rotation requirements of a variety of heavy equipment.
each set of bearings are tested by 100% magnetic particle inspection and ultrasonic testing before leaving the factory to eliminate the hidden dangers of tiny cracks and ensure the safety and stability of use in extreme heavy load environments.
| Parameter name | Technical indicators | Industry Standard Reference |
| Inner and outer ring materials | 42CrMo / 50Mn | GB/T 3077 / JB/T 6361 |
| Scroll body material | GCr15 bearing steel | GB/T 18254 |
| Gear type | Standard external gear / hardened external gear | ISO 1328 |
| Tooth surface hardness | 45-55 HRC (Induction Hardening) | JB/T 10839 |
| hardening of raceway | 55-62 HRC | JB/T 10839 |
| Sealing type | Nitrile butadiene rubber (NBR) bidirectional seal | Industrial-grade sealing standards |
| radial runout | 0.05 – 0.20 mm | Better than national standards |
| Operating temperature | -30℃ to +70℃ | All-weather working environment |
| Delivery time | 25-40 days | It depends on the complexity of the customization. |
We optimize the design of the tooth root fillet to effectively reduce stress concentration. Under high-frequency starting and braking conditions, the fatigue life of the tooth is longer than similar products by 2 years.
Our external gear slewing ring adopts automatic CNC gear hobbing process to ensure the tolerance consistency of each 1 tooth, which greatly reduces the additional wear on the drive pinion.
for heavy-duty lifting equipment, through the precise tooth heat treatment process, to solve the large modulus gear in the overload conditions easy to break teeth and tooth industry stubborn disease.
provides core slewing components for tower cranes and crawler excavators to meet the needs of the host plant for high reliability, high load capacity and long-term stable supply.
Yaw and pitch systems for wind turbines provide extremely high corrosion resistance and maintenance-free cycles in harsh outdoor and offshore environments.
for large-scale handling robots and automated production lines, providing high-precision rotary positioning support to meet its strict requirements for motion stability and repeated positioning accuracy.
suitable for fire trucks, dock cranes and aerial work vehicles, through the external gear transmission to simplify the design of the whole machine, to provide a more direct drive scheme and compact installation structure.
The flatness of the installation plane must be controlled within 0.1mm to ensure that the bearing is evenly stressed after installation and prevent the rotation resistance from increasing due to local overload.
bolts of grade 10.9 or above must be used and tightened three times in a star-shaped symmetrical sequence according to the specified torque to ensure the force balance of the connection parts.
by adjusting the center distance between the drive pinion and the external gear, the meshing gap is set in a reasonable range, and the tooth surface is coated with extreme pressure grease.
add grease through the grease nozzle every 150 to 200 hours, and rotate the bearing synchronously to ensure that the grease covers the raceway surface evenly.
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