SWBTEC
four point contact ball slewing bearing
The Four point contact ball slewing bearing achieves excellent performance of simultaneously carrying axial, radial and overturning moments in a compact space through a unique single-row fairway design. As a source manufacturing plant, Slewbearingtec has a complete forging and precision machining chain, eliminating intermediate trade links, and providing you with competitive direct selling prices and efficient non-standard customized services.
Our products
Four point contact ball slewing bearing is mainly used in sewage treatment equipment, small cranes, solar tracking systems and automated welding turntables.
four point contact ball slewing bearing characteristics
Efficient multi-directional load carrying capacity
The single-row four-point contact structure makes the steel ball and the raceway contact at four points, and a set of bearings can balance the complex combined load. This design replaces the traditional multi-bearing combination and reduces the weight of the host structure by more than 20%.
Deep induction hardening process
The depth of the surface hardening layer of the raceway is controlled at three to six millimeters, which significantly enhances the contact fatigue strength. Under standard working conditions, it can effectively prevent the early peeling of the raceway and extend the comprehensive service life of the product by more than three years.
Advantages of compact space layout
Due to the single-row ball road design, its axial and radial dimensions are reduced by about 30% compared with double-row ball bearings. This provides development engineers with greater design freedom and facilitates the placement of drives in tight spaces.
Precision CNC gear grinding technology
The gear part adopts high-precision CNC gear cutting or gear grinding technology to ensure that the tooth side clearance is controlled within 0.2mm. The high-precision meshing reduces the impact and vibration during operation and reduces the transmission noise by ten decibels.
Fully sealed long-term protection system
the use of anti-aging nitrile rubber sealing strip, can block more than 98% of the external dust and moisture intrusion. Even in the open air or wet environment, it can keep the internal grease pure and reduce the downtime caused by foreign body wear.
Optimized starting friction torque
By accurately controlling the matching clearance between the rolling element and the raceway, a very low starting friction resistance is achieved. This feature ensures the smoothness of the equipment during low-speed rotation and reduces the energy consumption of the drive motor.
| Technical parameters | Specifications |
| Main material standards | Compliant with GB/T 3077 or EN 10083 standards |
| Scroll body material | GCr15 bearing steel balls |
| Machining accuracy level | Precision manufacturing according to P5 or P6 level |
| Surface treatment process | Rust-preventive oil protection / Black phosphating / Industrial spray paint |
| Seal type | Lip seal (temperature resistance -30℃ to +80℃) |
| Mounting hole type | Countersunk holes, through holes, or threaded holes (customization available) |
| Radial runout tolerance | 0.05 to 0.20 mm (depending on diameter) |
four point contact ball slewing bearing contrast point
The four-point contact ball slewing bearing produced in Slewbearingtec makes the steel ball bear more uniform force when bearing impact load through the optimized raceway curvature ratio, and avoids the crack caused by local stress concentration. Compared with common products in the same industry, the temperature rise of our products under extreme load is reduced by 15%, which ensures the safe operation under high-intensity operation.
Lightweight equipment bearing limited scheme
Corrosion prevention and control in high salt spray environment
Difficult problem of non-standard installation hole position adaptation
Four point contact ball slewing bearing for people
Sanitation Machinery R & D Engineer
Responsible for the design of the rotary system of road sweeper or garbage compression truck, which requires four-point contact ball bearings with compact structure and strong corrosion resistance.
Photovoltaic support system procurement supervisor
looking for a solar tracker turntable that can withstand wind load overturning moment and has extremely high cost performance, focusing on high-volume supply capacity.
Construction machinery maintenance expert
responsible for the maintenance of on-site concrete pump trucks or small excavators, requiring high-quality replacement parts to reduce construction delays caused by slewing failures.
Automation integrator
design industrial welding robot or material stacking turntable, the pursuit of slewing stability and low starting torque, to ensure the repeatability of positioning accuracy.
four point contact ball slewing bearing instructions
Check the machining accuracy of the supporting surface
before installation, it is necessary to ensure that the flatness error of the mounting base is within 0.2mm to avoid jamming of the raceway due to uneven stress.
Cross fastening of high-strength bolts
use 10.9-grade bolts and tighten them in three times according to the principle of 180-degree symmetry. It is strictly prohibited to use low-strength bolts instead.
Guide for gear backlash adjustment
Adjust the position of the drive pinion at the highest point of the radial runout of the ring gear to ensure that the backlash meets the specifications and prevents the occurrence of top teeth during operation.
Initial operation, lubrication and maintenance
check the bolt pre-tightening force after the equipment runs for 50 hours, and add appropriate amount of lithium-based grease through the grease nozzle every 100 hours.
factory and certificate
certificate
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four point contact ball slewing bearing
The Four point contact ball slewing bearing achieves excellent performance of simultaneously carrying axial, radial and overturning moments in a compact space through a unique single-row fairway design. As a source manufacturing plant, Slewbearingtec has a complete forging and precision machining chain, eliminating intermediate trade links, and providing you with competitive direct selling prices and efficient non-standard customized services.
42CrMo or 50Mn
Inner and outer ring material
55 to 62HRC
Raceway hardening hardness
no teeth, internal teeth or external teeth
Tooth type
four point contact ball slewing bearing characteristics
Efficient multi-directional load carrying capacity
The single-row four-point contact structure makes the steel ball and the raceway contact at four points, and a set of bearings can balance the complex combined load. This design replaces the traditional multi-bearing combination and reduces the weight of the host structure by more than 20%.
Deep induction hardening process
The depth of the surface hardening layer of the raceway is controlled at three to six millimeters, which significantly enhances the contact fatigue strength. Under standard working conditions, it can effectively prevent the early peeling of the raceway and extend the comprehensive service life of the product by more than three years.
Advantages of compact space layout
Due to the single-row ball road design, its axial and radial dimensions are reduced by about 30% compared with double-row ball bearings. This provides development engineers with greater design freedom and facilitates the placement of drives in tight spaces.
Precision CNC gear grinding technology
The gear part adopts high-precision CNC gear cutting or gear grinding technology to ensure that the tooth side clearance is controlled within 0.2mm. The high-precision meshing reduces the impact and vibration during operation and reduces the transmission noise by ten decibels.
Fully sealed long-term protection system
the use of anti-aging nitrile rubber sealing strip, can block more than 98% of the external dust and moisture intrusion. Even in the open air or wet environment, it can keep the internal grease pure and reduce the downtime caused by foreign body wear.
Optimized starting friction torque
By accurately controlling the matching clearance between the rolling element and the raceway, a very low starting friction resistance is achieved. This feature ensures the smoothness of the equipment during low-speed rotation and reduces the energy consumption of the drive motor.
| Parameter item | Specifications/Description | Notes |
| Standard Sizes | BQ, NQ, HQ, PQ, PQ3 | Compliant with DCDMA international standards |
| Cutter Size | 1308 (13mm), 1613 (16mm), 1913 (19mm) | Select based on the hardness of the formation |
| Blade Count | 3 – 6 wings | Few-bladed drills are suitable for fast drilling in soft rock, while multiple-bladed drills are suitable for hard rock. |
| Applicable lithology (Formation) | Mudstone, sandstone, limestone, shale, salt rock | Mohs hardness 3-7 (f < 12) |
| Body Material | Matrix Body / Steel Body | The tire body is wear-resistant, and the steel body is impact-resistant. |
| Back Rake | 15° – 25° adjustable | The larger the angle, the stronger the impact resistance; the smaller the angle, the faster the cutting speed. |
| Connection thread | API Regular, IF, or special core-taking tube thread | After high-frequency quenching treatment, it is fatigue resistant. |
| Recommended WOB (Working Weight on Drill) | 6 – 15 kN (depending on drill bit diameter) | Compared to impregnated diamond bits, it requires less drilling pressure. |
four point contact ball slewing bearing contrast point
Lightweight equipment bearing limited scheme
in view of the small crane requirements of light weight and large load demand, the Slewbearingtec provides a compact four-point contact scheme to solve the problem of heavy double-row bearings.Corrosion prevention and control in high salt spray environment
aiming at the pain point of easy corrosion of bearings of coastal operation equipment, we provide special surface phosphating treatment with long-term sealing to reduce the risk of corrosion failure by 80%.Difficult problem of non-standard installation hole position adaptation
aiming at the problem that the hole position is difficult to match when the old equipment is reformed, the Slewbearingtec can realize the zero error customization of the hole position, and solve the problem that the purchaser cannot assemble due to the hole position deviation.Four point contact ball slewing bearing for people
Sanitation Machinery R & D Engineer
Responsible for the design of the rotary system of road sweeper or garbage compression truck, which requires four-point contact ball bearings with compact structure and strong corrosion resistance.
Photovoltaic support system procurement supervisor
looking for a solar tracker turntable that can withstand wind load overturning moment and has extremely high cost performance, focusing on high-volume supply capacity.
Construction machinery maintenance expert
responsible for the maintenance of on-site concrete pump trucks or small excavators, requiring high-quality replacement parts to reduce construction delays caused by slewing failures.
Automation integrator
design industrial welding robot or material stacking turntable, the pursuit of slewing stability and low starting torque, to ensure the repeatability of positioning accuracy.
four point contact ball slewing bearing instructions
Check the machining accuracy of the supporting surface
before installation, it is necessary to ensure that the flatness error of the mounting base is within 0.2mm to avoid jamming of the raceway due to uneven stress.
Cross fastening of high-strength bolts
use 10.9-grade bolts and tighten them in three times according to the principle of 180-degree symmetry. It is strictly prohibited to use low-strength bolts instead.
Guide for gear backlash adjustment
Adjust the position of the drive pinion at the highest point of the radial runout of the ring gear to ensure that the backlash meets the specifications and prevents the occurrence of top teeth during operation.
Initial operation, lubrication and maintenance
check the bolt pre-tightening force after the equipment runs for 50 hours, and add appropriate amount of lithium-based grease through the grease nozzle every 100 hours.
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