Large Slewing Bearings

1. Product Description: Large slewing bearings are the core rotating components of heavy equipment, carrying the equipment's critical motion functions. They offer exceptional load-bearing capacity, excellent anti-overturning performance, and stable operation.
2. Product Structures: We offer a variety of slewing bearing structures, including three-row roller, double-row ball-type with varying diameters, single-row four-point contact ball, and cross-roller.
3. Size Range: Inner diameter range: 50mm-8000mm, outer diameter range: 80mm-10000mm, height range: 20mm-500mm, and custom sizes available for oversized sizes.
4. Materials: Base Material: 42CrMo, 50Mn Special Alloy Steel
Rolling Elements: GCr15SiMn High-Purity Bearing Steel
Cage: Brass, Steel, or Engineering Plastic
Seal Material: Imported Nitrile Rubber or Fluororubber
5. Applications:
Wind Power Equipment, Port Machinery, Mining Equipment, Metallurgical Equipment, Military Equipment, Specialty Equipment

Product Description

Large Slewing Bearings - Heavy-Duty Rotating Solutions

Large slewing bearings become critical components of your machinery when your heavy equipment needs to rotate reliably under extreme loads. These carefully designed rotating components are the backbone of industrial machinery, enabling smooth 360-degree rotation while withstanding enormous axial, radial, and moment loads. Luoyang Hengguan Bearing Technology Co., Ltd. manufactures slewing bearings with diameters ranging from 50 mm to 10,000 mm, designed to meet the demanding application requirements of wind turbines, port cranes, mining excavators, and metallurgical equipment.

Our products feature precision-machined raceways, high-purity rolling elements, and precision-engineered mounting structures. We offer a variety of auxiliary configurations, including single-row four-point contact ball bearings, double-row ball bearings, three-row roller bearings, and crossed roller bearings. Each configuration is tailored to the specific stacking and operating requirements of your application.

Our production process combines CNC vertical machine tools, gear hobbing machines, and precision hammering equipment, and employs an ISO 9001 certified quality control system. Your bearings undergo dimensional review, hardness testing, and rotational performance certification before the most recent shipment.

Why Choose Us?

Twenty Years of Professional Experience

Our design team focuses on innovation in slewing bearings. This specialization means you'll receive practical designs, not mediocre solutions.

Diameter Range: 50mm to 10,000mm

Whether you need a compact turntable unit or a large unit for mining excavators, our production capacity can meet your needs.

Precision Grades: P0 / P6 / P5 / P4

You can choose the appropriate precision grade based on your application intensity and budget.

Custom Design Services

We offer technical consultation, product design, and non-standard customization services, including custom-made large gears, shafts, and ring gears based on your 3D drawings or test diagrams.

Global Supply Network

Our products are used in over 50 countries worldwide, including the USA, Germany, Australia, and throughout the Middle East.

Technical Specifications

Parameter	Specification
Inner Diameter Range	50mm – 8,000mm
Outer Diameter Range	80mm – 10,000mm
Height Range	20mm – 500mm
Precision Grades	P0, P6, P5, P4 (ISO standard)
Base Material	42CrMo, 50Mn alloy steel
Rolling Elements	GCr15SiMn high-purity bearing steel
Cage Options	Brass, steel, engineering plastic
Seal Material	Nitrile rubber, fluorocarbon rubber
Structural Types	Single-row four-point contact ballDouble-row ball (varying diameters)Three-row rollerCross-roller
Gear Options	Internal gear, external gear, or non-geared
Operating Temperature	-40°C to +80°C (standard seals)
Compliance Standards	ISO, DIN, GB, RoHS

Certification

Large Slewing Bearings certification

Features and Benefits

Integrated Components, Multiple Load Support

The integrated design can simultaneously withstand axial thrust, radial force, and overturning moment. This eliminates the need for complex bearing arrangements and reduces component height.

Precision Raceway Geometry

CNC precision-ground raceways maintain a contact angle accuracy within ±2°. Load distribution is uniform across all rolling elements, reducing stress concentration.

High-Strength Alloy Steel Structure

42CrMo and 50Mn base materials undergo controlled heat treatment, achieving a surface hardness of HRC 55-62. This improves wear resistance and extends service life.

Engineering Sealing System

Double seals using imported nitrile rubber or fluororubber prevent lubricant leakage and contaminant ingress. This extends maintenance intervals and improves bearing life.

Gear Integration Options

Internal or external gear teeth are directly machined onto the bearing rings, eliminating the need for separate gear assemblies. This results in a more compact and efficient drive system.

Modular Installation Design

Standardized bolt hole positions simplify installation and future replacements. This reduces downtime during equipment upgrades.

Applications

Wind Power Generation

Pitch and yaw systems require bearings that withstand variable wind loads and continuous directional adjustments. Our double-row four-point contact designs provide the necessary moment stiffness.

Port Machinery

Ship-to-shore cranes, mobile harbor cranes, and bulk handling equipment depend on Large Slewing Bearings for boom rotation and load positioning under coastal environmental conditions.

Mining Equipment

Excavators, draglines, and bucket-wheel reclaimers work in rough, high-load situations. Three-row roller setups provide the required stack capacity.

Metallurgical Equipment

Ladle turrets, nonstop casting machines, and heater tilting components require solid turn beneath extraordinary temperatures and overwhelming loads.

Military and Forte Equipment

Radar stages, versatile launchers, and specialized apparatus require custom-engineered arrangements with particular mounting configurations.

Installation Guide

Pre-Installation Inspection

Verify that mounting surfaces are level inside 0.2mm per meter. Clean all jolt gaps and evacuate defensive coatings from raceways.

Mounting Surface Preparation

Apply a lean, uniform layer of anti-corrosion oil to contact surfaces. Guarantee concentricity between bearing bore and mounting Shaft.

Bolt Fixing Sequence

Use a star design when fixing mounting jolts. Apply torque in three stages: 30%, 70%, at that point 100% of indicated esteem. Check last torque after beginning operation period.

Lubrication Application

Fill oil chambers through grease ports until new oil shows up at seals. Pivot bearing a few insurgencies to disseminate grease evenly.

Initial Break-In

Operate at 25% evaluated stack for to begin with 50 hours. Screen temperature and vibration levels amid this period.

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.

Large Slewing Bearings partners

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 Intervals

Relubricate each 100-200 working hours beneath typical conditions. Increment recurrence in dusty or muggy environments.

Bolt Torque Verification

Check mounting jolt torque each 500 hours at first, at that point each 1,000 hours after stabilization.

Seal Condition Monitoring

Inspect seals quarterly for breaks, distortion, or oil spillage. Supplant harmed seals promptly to avoid contamination.

Raceway Inspection

During planned support, turn bearing gradually and tune in for unpredictable commotion showing wear or contamination.

Storage Requirements

If putting away some time recently establishment, keep up level position in dry environment between 5°C and 40°C. Pivot quarterly to anticipate wrong brinelling.

FAQ

Q: What is the commonplace lead time for standard sizes?

A: Standard distance across heading (200mm-2000mm) regularly dispatch inside 4-6 weeks. Bigger custom sizes require 8-12 weeks depending on specifications.

Q: Can you make heading with extraordinary coatings?

A: Yes, we give zinc plating, phosphate coating, or dark oxide treatment based on your natural requirements.

Q: How do I select between ball and roller types?

A: Ball heading suit applications with direct loads and higher speed necessities. Roller orientation handle heavier loads but work at lower speeds. Our engineers can prescribe based on your stack spectrum.

Q: Do you give establishment supervision?

A: We offer farther specialized back for all establishments and can organize on-site direction for expansive ventures or complex applications.

Q: What documentation do you give with shipment?

A: Each bearing incorporates dimensional assessment reports, fabric certificates, and establishment informational. Extra test reports accessible upon ask.

Contact Us

Need technical assistance or a Large Slewing Bearings solution? Our engineering team is ready to help. Reach us at mia@hgb-bearing.com for quotations, technical specifications, or application consulting.

WHAT OUR CUSTOMERS SAY

Here is the customer's evaluation of us

From Europe

As a leading construction machinery manufacturer in Europe, we are very impressed with the quality and performance of your slewing rings. The precision machining and consistent quality meet our strict standards. A reliable global supplier!

From United States

Our CT scanners require extremely smooth rotation, low noise, and no magnetic interference. Your product perfectly meets these requirements, operating virtually silently without compromising image quality. Your technical expertise is truly impressive!

From Southeast Asia

We have been the distributor of your brand for many years and have received excellent customer feedback. Your diverse product line meets diverse customer needs, and our consistent quality makes us very competitive in the market. Your technical support and service team are also fantastic!

From United States

The slewing bearing selected for our wind turbine main drive system has exceeded our expectations in terms of precision and reliability. It operates smoothly even in extreme wind conditions and has a long maintenance cycle, significantly reducing our lifecycle costs. We are a trustworthy partner!

From the Middle East

Our equipment required a slewing bearing with non-standard dimensions and special gears. We contacted several companies but they all said they couldn't make it. Not only did you accept the order, but we also communicated smoothly throughout the entire process from proofing to mass production, and the finished product fully met our design requirements. This customization capability demonstrates your true technical strength.

From Europe

We have integrated your slewing rings into our new line of crawler cranes. The performance under full load and in extreme weather conditions has been flawless. The precision and durability meet the highest European standards. A truly reliable component for critical applications.

From North America

The harsh, sandy environment of our port is a true test for any equipment. Your slewing bearings' superior sealing system has effectively kept out abrasive contaminants. Our ship-to-shore cranes have seen a dramatic increase in uptime and service life since switching to your brand.

From the Middle East

In the mining industry, equipment failure is not an option. The immense strength and robust construction of your large-diameter slewing bearings have withstood the incredible shocks and loads in our mining excavators. Their reliability is directly contributing to our productivity.