Gear Slew Bearing

Gear Slew Bearing – Precision Rotation with Integrated Drive Transmission

When your heavy-duty apparatus requires stable rotation under extreme loads, Gear slew bearing solutions from Luoyang Heng Guan Bearing deliver proven performance. Our product combines precision rolling elements with integrated gearing to eliminate separate drive systems. With production coverage ranging from 200mm to 5000mm inner diameters and bearing precision ranging from P0 to P4 grade, we serve over 50 countries with ISO9001-certified quality. Our 42CrMo and 50Mn alloy steel construction, combined with GCr15SiMn rolling elements, ensures your equipment operates smoothly for up to 100,000 hours. Whether you require internal or external gear setups, our engineering team provides technical consultation, custom design, and installation guidance tailored to your application.

Gear Slew Bearing Details

This product is a large-diameter rotational component designed to handle radial, axial, and tilting moment loads simultaneously. It integrates gear teeth directly onto the inner or outer ring, combining bearing and transmission functions in one compact unit.
Available Structures:

• Internal gear slewing bearings
• External gear slewing bearings
• Single-row ball configurations
• Double-row ball configurations
• Triple-row roller designs for heavy-duty applications

Dimension Range:

• Inner Diameter: 200mm – 5000mm
• Outer Diameter: 300mm – 5500mm
• Height: 50mm – 400mm
• Custom dimensions available upon request

Core Materials:

• Base rings: 42CrMo, 50Mn high-strength alloy steel
• Rolling elements: GCr15SiMn high-purity bearing steel
• Seals: Imported nitrile rubber or fluororubber

The optimized gear design increases transmission efficiency by 25% compared to conventional systems. You eliminate complex Shaft assemblies while reducing your machine's vertical footprint.

Why Choose Us

20+ Years of Manufacturing Expertise

Located in Luoyang, China's bearing industry hub, we specialize in Slewing Bearing R&D and precision manufacturing. Our team of over 50 engineers focuses exclusively on rotary bearing solutions.

Advanced Production Capabilities

Your orders are processed using CNC vertical lathes, CNC quenching machines, CNC gear cutters, machining centers, grinding machines, and large gear hobbing equipment. This ensures consistent quality for small batches and mass production runs.

Flexible Customization Services

We provide:

Technical consultation for application-specific requirements

Product design based on your working conditions

Reverse engineering mapping services

Personalized non-standard customization

Installation guidance

Global Reach with Local Support

Our products serve customers in over 50 countries, including the United States, Germany, Australia, South Africa, and throughout the Middle East. We maintain sufficient standard product inventory for fast delivery and support OEM/ODM partnerships.

Technical Specifications

Testing & Certification

Every slewing bearing undergoes comprehensive quality testing using advanced equipment:

• Coordinate Measuring Machines verify dimensional accuracy

• Vibration Testing confirms smooth rotation characteristics

• Hardness Testing ensures proper heat treatment

• Gear Inspection validates slewing ring gear precision

• Life Testing validates durability under simulated operating conditions

• Material Certification provides full traceability

ISO 9001 certification and RoHS-compliant materials ensure your slewing ring meets international quality standards.

Features and Benefits

High Transmission Efficiency

Precision-machined gear teeth deliver 25% improved power transmission compared to standard designs. You reduce energy losses during operation.

Superior Load Capacity

Optimized raceway geometry increases load-bearing capacity by 30%. Your equipment handles heavier workloads without premature wear.

Compact Installation

Integrated drive and bearing functions eliminate separate gearboxes. You save valuable space and reduce assembly weight.

Extended Service Life

High-quality alloy steel and advanced heat treatment processes guarantee up to 100,000 working hours. You minimize downtime and replacement costs.

Simplified Maintenance

Standardized design allows easy inspection and lubrication. Your maintenance teams cut service time and lower parts inventory costs.

Versatile Configurations

Choose from single-row ball, double-row ball, or triple-row roller designs. We match the bearing structure to your specific load conditions.

Applications

Construction Equipment

Tower cranes, excavators, concrete pump trucks, and mobile cranes rely on gear slew bearing technology for stable rotation under dynamic loads.

Renewable Energy

Wind turbine yaw and pitch control systems adopt our bearings to withstand continuous rotation and extreme weather conditions.

Port and Material Handling

Container cranes, ship unloaders, harbour cranes, bucket-wheel stackers and reclaimers rely on our bearings for 24/7 operational reliability.

Industrial Machinery

Ladle turrets, welding positioners and rotary tables benefit from the compact design and high moment capacity.

Installation Guide

Pre-Installation Checks

Inspect mounting surfaces for levelness and cleanliness. Confirm that bolt holes comply with your machine's specifications.

Mounting Procedure

1. Position the bearing onto the base structure
2. Align gear teeth with the drive pinion
3. Insert mounting bolts hand-tight in a star pattern
4. Torque bolts to specified values in multiple passes
5. Verify gear meshing and backlash

Initial Lubrication

Apply lithium-based grease (NLGI Grade 2) to raceways and gear teeth before commissioning. Follow the lubrication schedule in your equipment manual.

Clearance Adjustment

Check axial and radial clearance after installation. Adjust shims if necessary to meet specification tolerances.For complex installations, our engineering team provides on-site guidance and technical support.

Exhibition

We attend many famous international exhibitions such as Shanghai International Maritime Exhibition,Mining World Russia, bauma China, CTT Russia, etc

Partners

Your trust, we cherish in heart all times and will reciprocate that trust with unwavering quality.

Packaging & shipping

Your goods are unique, and their journey should be flawless. Therefore, we offer professional and customized packaging services. Our experienced team will evaluate your goods' characteristics, transportation route, and environmental requirements to recommend the most secure solution, such as: wooden crate packaging, sturdy frame packaging, or composite reinforced packaging (wooden crate + iron frame).

Maintenance and Care

Regular Lubrication

Inspect grease condition every 100 operating hours. Replenish through grease nipples until fresh lubricant appears at seals.

Periodic Inspection

Check for abnormal noise, vibration, or temperature rise every 500 hours. Inspect seals for cracks or wear.

Gear Teeth Examination

Monitor tooth wear patterns and backlash every 1,000 hours. Adjust mesh alignment if deviations exceed tolerance.

Bolt Torque Verification

Re-torque mounting bolts after the first 50 hours of operation, then every 2,000 hours thereafter.

Service Life Extension

Maintain clean operating environments and proper load distribution. Avoid shock loads and overloading conditions.

FAQ

Q: What's the difference between internal and external gear configurations?

A: Internal gear bearings have teeth machined on the inner ring, suitable for space-constrained installations. External gear bearings feature teeth on the outer ring, offering easier drive pinion access.

Q: Can you customize dimensions beyond the standard range?

A: Yes. We manufacture bearings from 50mm to 10,000mm diameter. Share your specific requirements for a customized solution.

Q: What precision grade should I specify?

A: P0 suits general industrial use. P6 and P5 fit precision machinery. P4 serves ultra-precise applications like aerospace equipment.

Q: Do you provide technical drawings before production?

A: We supply detailed 2D and 3D CAD drawings for approval before manufacturing begins.

Q: What's the typical lead time?

A: Standard products ship within 2–3 weeks. Custom bearings require 4–6 weeks depending on complexity.

Q: How do I specify the correct bearing for my application?

A: Provide your axial load, radial load, tilting moment, rotation speed, and space constraints. Our engineers will recommend the optimal configuration.

Contact Us

Ready to optimize your machinery's rotational performance? Our team provides technical consultation, custom design solutions, and competitive quotations. Contact Us at mia@hgb-bearing.com for engineering support and gear slew bearing inquiries.