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Tower Crane Slewing Bearing

. Product Description: The tower crane slewing bearing is the core rotating component of the tower crane, carrying the entire load of the upper structure, including the boom and counterarm, and enabling 360-degree rotation of the tower crane's upper structure.
2. Product Structures: Single-row four-point contact ball type, double-row different-diameter ball type, triple-row roller type. Customization is available for special requirements.
3. Size Range: Inner Diameter: 800mm-4000mm, Outer Diameter: 1000mm-4500mm, Height: 80mm-300mm, Number of Bolt Holes: 48-120. Customization is available for special requirements.
4. Materials: Base material: 42CrMo, 50Mn special alloy steel
Rolling elements: GCr15SiMn high-purity bearing steel
Seal material: Imported nitrile rubber or fluororubber
5. Applications:
Topless tower cranes, luffing jib tower cranes, internal climbing tower cranes, high-speed tower cranes, and special-purpose tower cranes: wind turbine installation and bridge construction
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  • Product Description

Tower Crane Slewing Bearing - Professional Manufacturer

Product Details

The Tower Crane Slewing Bearing is the critical rotational interface between the tower and the upper structure (slewing platform), enabling 360° smooth rotation while supporting the combined loads from the boom, jib, and lifted materials. Engineered for the demanding cycles of construction, this component is fundamental to a crane's stability, precision, and longevity.

At Luoyang Heng Guan Bearing Technology, we specialize in designing and manufacturing slewing bearings that meet the rigorous demands of global tower crane applications. Our products integrate optimized raceway geometry, superior materials, and precision manufacturing to deliver unmatched load capacity and reliable rotational performance under the most complex loading conditions.

Why Choose Us?

1. Engineering & Manufacturing Expertise
Based in Luoyang, China's bearing industry hub, our engineering team possesses over 20 years of combined experience in slewing bearing design. We translate this knowledge into robust products using advanced manufacturing facilities, including CNC vertical lathes, CNC quenching machines, Gear shapers, and precision grinding equipment.

2. Comprehensive Quality Assurance
Our ISO 9001 certified quality management system ensures consistency and traceability from raw material inspection to final testing. We adhere to international standards (ISO, DIN, GB) and RoHS compliance, guaranteeing product reliability.

3. Full Customization & Technical Support
We provide complete engineering consultation, custom design, and non-standard manufacturing services. Whether you have detailed 3D drawings or require reverse engineering from an existing sample, our team can develop a tailored solution.

4. Proven Global Supply
Our bearings are operational in over 50 countries across diverse climates and project types, from high-rise construction in the Middle East to infrastructure projects in Europe and North America. This experience ensures we understand your application challenges.

Tower Crane Slewing Bearing factory
Tower Crane Slewing Bearing factory

Technical Specifications

Parameter
Specification
Notes
Structure Types
Single-row four-point contact ballDouble-row different-diameter ballTriple-row roller
Custom configurations available
Inner Diameter
800mm - 4000mm
Custom sizes on request
Outer Diameter
1000mm - 4500mm
Matched to inner diameter
Height
80mm - 300mm
Depends on load requirements
Bolt Holes
48 - 120 holes
Per mounting requirements
Base Material
42CrMo, 50Mn alloy steel
High strength and toughness
Rolling Elements
GCr15SiMn bearing steel
High-purity grade
Seal Material
Nitrile rubber / Fluororubber
Temperature and chemical resistant
Precision Grade
P0, P6, P5, P4
Application-dependent
Compliance
ISO, DIN, GB standards
RoHS compliant

Certification

Tower Crane Slewing Bearing certification

Features and Benefits

Optimized Load Distribution: The raceway geometry (especially in 4-point contact design) distributes combined axial, radial, and moment loads across multiple contact points, minimizing stress concentration and maximizing service life.

Superior Material & Heat Treatment: Structural components made from high-grade alloy steels undergo computer-controlled quenching and tempering, ensuring deep, uniform hardness for consistent performance and dimensional stability.

Robust Sealing System: Multi-lip seals manufactured from quality rubber compounds effectively exclude construction site debris and retain lubricant, significantly reducing maintenance frequency.

High Rigidity & Precision: Precision-machined raceways and tight tolerance control result in smooth slewing motion with minimal deflection, ensuring accurate load positioning and operator control.

Integrated Design Flexibility: Available with integral gearing (internal or external) and custom bolt patterns for seamless and secure integration into your crane design.

Applications

High-Rise & Urban Construction: Luffing jib and topless tower cranes for projects with space constraints.

Large-Scale Infrastructure: Bridge construction, dam projects, and power plant building.

Specialized Crane Systems: Internal climbing cranes, hammerhead cranes, and heavy-lift capable models.

Wind Turbine Installation & Maintenance: Cranes requiring high moment capacity and reliability.

Global Operation: Designed to perform in diverse environments, from extreme desert heat to freezing Arctic conditions.

Installation Guide

1. Preparation: Verify mounting surface flatness and cleanliness. Ensure bolt holes align perfectly.

2. Mounting: Position bearing carefully. Tighten mounting bolts in a diagonal star pattern to the specified torque using calibrated tools.

3. Initial Lubrication: Fill grease channels with recommended lubricant. Rotate bearing several full revolutions to distribute grease evenly.

4. Verification: Check for smooth, unrestricted rotation and verify clearance per specifications.

Tower Crane Slewing Bearing installation
Tower Crane Slewing Bearing installation
Tower Crane Slewing Bearing installation
Tower Crane Slewing Bearing installation

Exhibition

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

Tower Crane Slewing Bearing exhibition
Tower Crane Slewing Bearing exhibition

Partners

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

Tower Crane Slewing Bearing 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).

Tower Crane Slewing Bearing packing
Tower Crane Slewing Bearing packing
Tower Crane Slewing Bearing packing

Maintenance and Care

Scheduled Lubrication: Relubricate at intervals based on operating hours, load, and environment (typically 100-500 hours).

Regular Inspection: Periodically check for unusual noise/vibration, inspect seal condition, and re-torque mounting bolts (especially after initial run-in).

Operational Care: Avoid shock loads and operate within rated capacity. Keep the bearing area clean from accumulating debris.

Customer Reviews

"The bearing quality surpassed our desires. Smooth operation and great client bolster all through the extend." - Development Director, Germany

"Reliable execution in cruel climate conditions. The specialized direction was important amid establishment." - Gear Administrator, Australia

Tower Crane Slewing Bearing reviews
Tower Crane Slewing Bearing reviews

FAQ

Q: What is the ordinary benefit life?

A: Benefit life depends on stack conditions, upkeep, and working environment. Appropriately kept up orientation in standard applications ordinarily give 8-12 a long time of service.

Q: Can you give custom jolt gap patterns?

A: Yes, we fabricate orientation to client determinations, counting custom jolt configurations.

Q: What accuracy review ought to I choose?

A: P0 review suits most tower crane applications. Higher exactness grades (P6, P5, P4) are accessible for specialized requirements.

Q: Do you give establishment support?

A: We offer establishment direction and specialized meeting. On-site bolster can be orchestrated for expansive projects.

Q: What is your conveyance time?

A: Standard items dispatch inside 2-3 weeks. Custom heading require 4-8 weeks depending on specifications.

Q: How do I select the right bearing size?

A: Give your crane show, stack prerequisites, and mounting measurements. Our engineers will suggest appropriate determinations.

Contact Us

For technical inquiries or quotation requests regarding our Tower Crane Slewing Bearing products, reach out to our engineering team at mia@hgb-bearing.com. We're ready to support your project requirements.

GET IN TOUCH WITH OUR ENGINEERS
Tell us your requirements — drawings, size, or application