Slewing Ring Turntable

Slewing Ring Turntable – Precision Rotating Solutions for Heavy-Duty Applications

Luoyang HengGuan Bearing Technology provides industrial-grade slewing ring turntable assemblies built for heavy-duty rotating systems. Our production range spans 200mm to 10,000mm in diameter, with precision grades from P0 to P4. Manufactured using 42CrMo and 50Mn alloy steel, our turntables feature induction-hardened raceways (HRC 55-62) and GCr15SiMn rolling elements. With over 30 years of engineering expertise and a dedicated 50-member R&D team, we supply to 50+ countries including Germany, the United States, and Australia. ISO 9001 certified and RoHS compliant, our factory is equipped with advanced CNC vertical lathes, quenching systems, and Gear cutters. You get reliable load-bearing performance for excavators, wind turbines, and automation equipment.

Slewing Ring Turntable Details

A slewing ring is a large-diameter bearing designed to support combined axial, radial, and tilting moment loads simultaneously. Unlike conventional bearings, it functions as both a structural connector and a precision rotating interface between stationary bases and moving upper assemblies.

We offer four main structural configurations:

• Single-row ball four-point contact – ideal for light loads with space constraints
• Double-row ball type – provides increased load capacity in compact designs
• Triple-row roller – handles extreme radial and axial forces for mining equipment
• Cross-roller – delivers high rigidity and precision for automation applications

Our products integrate mounting holes directly into the inner and outer rings. This eliminates additional support structures and streamlines your installation process. Optional gear configurations (internal, external, or gearless) enable direct drive integration with your system.

Why Choose Us

Diameter Range You Actually Need

We manufacture from 200mm mini units to 10,000mm large-scale turntables. Your specification fits within our production capability.

Precision Grades for Critical Applications

Four available grades (P0, P6, P5, P4) let you balance cost against rotational precision requirements. Medical scanners and welding robots benefit from P4 precision levels, while construction machinery operates reliably at P0.

Heat Treatment Depth Control

Our CNC quenching machines apply induction hardening to 3-6mm depth, calibrated to your rolling element size. This prevents raceway deformation under peak shock loads.

Non-Standard Customization Without 3D Models

Our engineers conduct physical part mapping and reverse engineering. You send us your worn component, and we deliver dimensionally precise replacements.

Traceable Quality Control

Every slewing ring turntable undergoes coordinate measurement, vibration testing, and load cycle approval before shipment. You receive full material certifications meeting EN 10204 3.1 standards.

Technical Specifications

Features and Benefits

Integrated Mounting Interface

Pre-drilled bolt holes on both rings save your machining time. Your assembly team mounts the turntable directly to the structure using standard fasteners.

Multi-Directional Load Handling

The raceway geometry distributes axial loads, radial loads, and overturning moments within a single bearing unit. This eliminates the need for complex multi-bearing arrangements in your design.

Contamination Resistance

Double-lip seals form a reliable grease barrier. The turntable maintains lubrication integrity in dusty quarry sites and offshore salt-laden environments.

Long Service Intervals

Induction-hardened raceways resist wear progression. You can extend maintenance intervals from quarterly to annual inspections under standard industrial operating conditions.

Compact Axial Height

Thin-section slewing ring profiles reduce the machine’s overall height by 30-50% compared with conventional bearing assemblies. This lowers the center of gravity for mobile cranes and excavators.

Customizable Gear Integration

Internal or external gear teeth machined directly onto the ring allow the drive pinion to mesh without extra gearing components. This simplifies the drivetrain and minimizes backlash.

Applications

Engineering Machinery

Excavator swing drives and mobile crane slewing platforms rely on our turntables for 360° rotation under extreme shock loads and heavy debris exposure.

Renewable EnergyWind turbine yaw and pitch systems adopt our corrosion-resistant slewing rings to maintain blade angle accuracy through millions of adjustment cycles, with a service life of over 20 years.

Mining and MetallurgyBucket-wheel excavators and rotary kilns operate continuously with our heavy-duty triple-row roller slewing rings, which withstand combined loads in abrasive material handling conditions.

Port and Marine EquipmentShip-to-shore cranes and offshore platform cranes depend on fully sealed slewing rings to operate reliably in harsh saltwater environments with limited maintenance access.

Industrial AutomationWelding robots and CNC rotary tables utilize our high-precision cross-roller bearings to achieve positional repeatability within ±0.02mm during continuous production runs.

Medical and Scientific EquipmentCT scanner gantries rotate at a steady speed with our low-vibration designs, ensuring clear diagnostic images free from motion artifacts.

Installation Guide

Pre-Installation Preparation

Clean mounting surfaces to remove rust, paint and debris. Check flatness within 0.5mm over the entire mounting plane using a straightedge and feeler gauges.

Alignment Procedure

Position the slewing ring with mounting holes aligned to the base structure. Insert guide pins into opposite mounting holes to prevent shifting during bolt tightening.

Fastener Torque Sequence

Tighten bolts in a star pattern: 30% of full torque on the first pass, 70% on the second, and 100% on the final pass. Use calibrated torque wrenches compliant with ISO 6789.

Gear Mesh Adjustment (if applicable)

Install the drive pinion with backlash set to 0.1–0.3mm. Apply Prussian blue to inspect the gear tooth contact pattern across the full tooth width before final shimming.

Initial Lubrication

Inject NLGI Grade 2 lithium-based grease into grease fittings until fresh grease oozes out from the seal gap. Rotate the slewing ring three full revolutions to evenly distribute the lubricant.

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.

Testing & Certification

Our quality control system validates each turntable through:

• Dimensional Inspection: Coordinate measuring machines verify raceway geometry to ISO tolerance specifications
• Hardness Testing: Portable Rockwell testers confirm surface hardening depth and uniformity
• Load Cycle Testing: Sample units undergo fatigue testing at 120% rated load for 10⁶ cycles
• Vibration Analysis: Frequency spectrum analysis detects manufacturing anomalies before shipment
• Material Traceability: Raw material certificates trace steel composition to mill test reports

Certifications Held:

• ISO 9001:2015 Quality Management System
• RoHS Compliance for restricted substances
• Material certificates per EN 10204 3.1

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

Lubrication Schedule

Standard environments: relubricate every 100 operating hours or monthly

Harsh environments: relubricate every 50 hours or bi-weekly

Inspection Checklist

Check for unusual noise or vibration during rotation every shift. Inspect seals for cracks or grease leakage monthly. Measure gear backlash quarterly if equipped.

Bolt Retightening

Verify fastener torque after the first 50 operating hours, then annually. Replace any stretched or corroded bolts immediately.

Seal Replacement

If contamination enters the raceway, disassemble the unit, clean components with solvent, and install new seals. Re-pack with fresh grease before reassembly.

Storage Conditions

Store unused turntables indoors with rust-preventive oil coating. Rotate quarterly to redistribute grease and prevent false brinelling.

FAQ

Q: What is the minimum order quantity?

A: We accept single-unit orders for standard sizes and custom prototypes.

Q: Can you manufacture without providing 3D CAD files?

A: Yes. Send us your worn component or 2D drawings with dimensions. Our engineering team performs reverse mapping.

Q: How do you calculate load capacity for my specific application?

A: Provide operating conditions (axial force, radial force, tilting moment, rotation speed, duty cycle). We calculate equivalent load and recommend appropriate size and structure.

Q: What is the typical lead time?

A: Standard sizes ship within 15-20 days. Custom units require 30-45 days depending on complexity.

Q: Do you provide installation support?

A: We supply detailed installation manuals and technical consultation. On-site guidance is available for large projects by arrangement.

Q: What warranty coverage do you offer?

A: 12 months from commissioning or 18 months from shipment, whichever occurs first, covering manufacturing defects under proper operating conditions.

Contact Us

Need technical specifications or a custom quotation? Our engineering slewing ring turntable's team responds within 24 hours. Reach us at mia@hgb-bearing.com for application support.