ODM Double Row Ball Bearing Uses, Manufacturers & Suppliers

A Comprehensive Technical Whitepaper & Industrial Solutions Guide on Double Row Four-Point Contact Slewing Bearings

Jiangsu Manchen Transmission Factory Manufacturing Precision Bearings
OEM/ODM Authority Brand

Jiangsu Manchen Transmission Technology Co., Ltd.

Established in 2022, Jiangsu Manchen Transmission Technology Co., Ltd. has grown rapidly into a leading high-precision manufacturing enterprise integrating design, research and development, fabrication, and global sales. Strategically based in Huangtu Town, Jiangyin City, Jiangsu Province, we leverage a highly mature transport infrastructure alongside advanced manufacturing facilities.

By implementing state-of-the-art forging, proprietary heat treatment, and ultra-precision machining methodologies, we specialize in delivering robust, high-load-bearing, and long-life transmission configurations. Our engineering solutions serve diverse high-demand arenas such as construction machinery, medical equipment, intelligent warehousing, solar energy/photovoltaics, port infrastructure, industrial robotics, and environmental protection hardware.

Production Facility Room 1

Precision Machining Center

CNC Bearing Machining

Heavy Duty Turning Lathes

Heat Treatment Inspection

Induction Hardening Process

Inspection and Assembly Line

Final Integration Control

Engineering Insights: Double Row Ball Bearings

Understanding the mechanical properties, load distribution equations, and structural advancements of double row ball configuration in industrial applications.

Dynamic Load Capacity

Double row angular contact ball slewing bearings utilize dual tracks of spherical elements. This configuration doubles the effective load-bearing contact points, allowing systems to manage extremely large axial, radial, and overturning moments simultaneously.

Rigidity & Slewing Accuracy

Due to the two rows of ball structure separated by dynamic spacer rings, internal clearances are optimized. This provides highly reliable axial preload options, reducing wobble and optimizing precise angular movements in mechanical systems.

Custom Tooth Profile Flexibility

Our ODM/OEM technical capabilities allow integrated teeth on either the inner ring, the outer ring, or completely gearless configurations. This matches unique motor drives, pinion gears, and planetary reduction units seamlessly.

Structural Comparison: Single Row vs. Double Row Slewing Bearings

While single-row four-point contact ball slewing bearings are ideal for compact and light-to-medium load environments, they have limitations when managing complex, high-moment combinations. Double-row equal-diameter four-point contact ball swivel bearings act as an industry solution, bridging the gap between single-row bearings and heavy roller designs. By utilizing a double-deck ball path arrangement, the axial load capability is expanded by up to 80% without excessively increasing the outer diameter of the assembly housing.

2022
Establishment Year
12,000+
Annual Production (Units)
50Mn/42CrMo
High Grade Steel Alloys
100%
Traceable QC Systems

End-To-End Customization: OEM & ODM Manufacturing Process

At Jiangsu Manchen Transmission, we handle every stage of bearing manufacturing in-house to guarantee structural reliability and compliance with national and international quality frameworks.

01
Raw Materials

Preparation of Raw Materials

02
Forging

Forging Process

03
Rough Processing

Rough Processing

04
Heat Treatment

Heat Treatment

05
Semi finishing

Semi-finishing Process

06
Grinding

Rolling Path Grinding

07
Finishing

Finishing Process

08
Cleaning

Cleaning & Surface Treatment

09
Assembly

Precision Assembly

10
QC Inspection

Final QC & Packaging

We can also provide customized design and technical support according to customer needs, helping partners achieve efficient and stable equipment operation. We are based on integrity and aim to build a century-old enterprise. We always insist on high product quality to ensure customer interests.

Supported Customization: Internal Gear, External Gear & Gearless configurations.

Global Commercial & Localized Industrial Applications

Double row ball slewing bearings serve as crucial links across various dynamic fields, driving torque transformation under high-load parameters.

Photovoltaic Industry & Solar Trackers

Modern PV trackers utilize high-strength horizontal rotary drives to pivot heavy solar panels to align with solar trajectory. The double-row design excels here by countering wind shear loads while maintaining positioning accuracy over decades.

Intelligent Warehousing & Robotics

Industrial robots, automatic guided vehicles (AGVs), and stacker cranes require exceptionally stiff swivel points to operate safely in automated depots. Slewing bearings supply the necessary axial stability for multi-axis articulations.

Construction & Port Machinery

From mini excavators to massive gantry cranes, heavy equipment relies on robust slewing bearings with integrated internal or external gears. Double row configurations accommodate extreme overturning moments under dynamic duty cycles.

Medical Technology & Precision Scanners

CT scanners and oncology therapy machines demand smooth, low-noise rotating elements. Gearless double row ball swivel bearings achieve quiet, vibration-free operation while supporting heavy rotating gantries.

Environmental Protection & Waste Management

Clarifiers, water purification stirrers, and heavy industrial recycling systems integrate corrosion-resistant slewing bearings to operate reliably in aggressive chemical and wet environments over prolonged service intervals.

Technical Roadmap, Future Trends & Macro Solutions

Our commitment to engineering advancement and R&D steers the future of slewing bearing reliability and tribology solutions.

Next-Gen Materials & Surface Treatments

As operating environments become harsher, Jiangsu Manchen Transmission is investigating advanced surface engineering technologies. This includes proprietary nitrogen-rich coatings, thin-film chrome plating, and localized laser-induction hardening. These technologies are designed to decrease friction and double the wear resistance of critical raceway zones.

Additionally, optimizing the structural geometry through Finite Element Method (FEM) analysis allows us to shave up to 15% of redundant weight without reducing structural load capacities. This directly supports the transport sector's need for lighter machinery.

Smart Bearing Integrations & IoT Monitoring

The rise of Industry 4.0 has made real-time monitoring of rotating components essential. Our future roadmap integrates low-energy smart vibration and temperature sensors directly into the bearing's seal assembly.

This allows plant operators to receive predictive maintenance indicators before structural fatigue occurs, minimizing unexpected downtime in applications like wind power generation, automated port crane terminals, and offshore installations.

Our Certified Quality Standards

The company has always adhered to the business philosophy of "quality first, mutual cooperation and win-win", providing high-quality services and reliable products to both new and existing customers.

Jiangsu Manchen ISO Certification 1
Jiangsu Manchen Certification 2
Jiangsu Manchen Quality Control Cert 3

Frequently Asked Questions: Double Row Slewing Bearings

Expert engineering answers to technical queries regarding design customization, performance limits, and maintenance practices.

What is the primary advantage of a double row ball bearing over a single row design?
A double row ball bearing features two tracks of rolling elements. This layout increases the total contact area, allowing it to support significantly higher axial, radial, and tilting moment loads. It provides greater rigidity, making it suitable for applications with high-moment requirements that do not justify the cost or space of a roller-type slewing bearing.
Which steel alloys do you use for manufacturing heavy-duty slewing rings?
We primarily use high-grade 50Mn and 42CrMo (42CrMo4) carbon and alloy steels. For specific heavy industrial environments or deep-temperature marine applications, we utilize customized alloys that receive specialized induction hardening on the raceway to reach hardness levels of 55–62 HRC.
Can you provide gear integrations on either the inner or outer rings?
Yes, our design processes accommodate external gears, internal gears, and gearless variants. Gear configurations are machined using specialized gear hobbing and shaping gear teeth cutters to match the pressure angle, module, and tooth count requirements of your motor drive.
How does Jiangsu Manchen Transmission manage quality control?
We enforce strict inspection steps starting from raw forging verification and ultrasonic non-destructive testing (NDT), through geometric coordinate measuring machine (CMM) testing, to final assembly testing. Full documentation is cataloged to ensure traceability back to the raw material heat batch.

Looking Ahead: Innovation in Rotary Transmission

In addition, we have established long-term cooperative relationships with many well-known domestic enterprises. With stable quality and complete after-sales services, we have won wide recognition in the market. In the future, the company will continue to focus on technological upgrading in the transmission field, and strive to provide global customers with higher-quality and more cost-effective rotary transmission products and services.