Tower Crane Slewing Ring: Heavy-Duty Rotation Solutions for Construction Lifting
1. Product Overview
As a professional slewing bearing manufacturer, we understand that the slewing ring is the "joint" of the tower crane, critical for safe and precise operation. Our Tower Crane Slewing Rings are engineered to withstand the rigorous demands of high-rise construction and heavy lifting.
Designed to accommodate simultaneous axial, radial, and tilting moment loads, our slewing rings ensure smooth 360-degree rotation under extreme stress. Whether for flat-top or hammerhead tower cranes, our bearings provide the structural integrity and rotational accuracy required for modern construction machinery.
2. Performance and Quality
We utilize advanced manufacturing processes to ensure every slewing ring meets international safety standards.
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Material Superiority: Manufactured using high-quality GCr15 or 42CrMo steel, ensuring high hardenability and wear resistance.
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Precision Hardening: The raceways undergo precise induction hardening (HRC 55-62), providing a deep hardening layer that resists deformation and fatigue.
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Robust Sealing: Equipped with multi-lip rubber seals (NBR/PU) to prevent grease leakage and block contaminants like dust and water, essential for outdoor construction sites.
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Gear Accuracy: High-precision gear teeth (External or Internal) are milled to DIN/ISO standards, ensuring smooth meshing with the pinion and low backlash.
3. Technical Specifications
We offer a wide range of standard models, specifically optimized for tower crane applications.
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Model Series
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Type
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Structure Feature
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Load Capacity
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01 Series
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Single-row Four-point Contact Ball
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Compact structure, light weight
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Moderate axial/tilting load
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02 Series
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Double-row Different Diameter Ball
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High rigidity, large axial size
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High axial & tilting moment
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11 Series
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Single-row Crossed Roller
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High dynamic load capacity
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High radial/axial load
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13 Series
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Three-row Roller
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Separate load paths for rollers
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Ultra-heavy duty capacity
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Note: For tower cranes, the 02 Series (Double-row Ball) is frequently used due to its ability to handle significant overturning moments and large diameters.
4. Certifications and Standards
Our manufacturing processes are strictly controlled and certified to ensure global compliance:
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ISO 9001:2015: Quality Management System.
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JB/T 2300-2011: Chinese Machinery Industry Standard for Slewing Bearings.
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EN 13001-3-4: Compliance with European standards for crane bearing capacity and limit states.
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CE Certification: Ready for export to the European market.
5. Product Applications
Our slewing rings are the ideal match for various heavy machinery, with a primary focus on:
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Tower Cranes: Both flat-top and traditional hammerhead designs.
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Construction Hoists: Vertical transport systems.
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Mobile Cranes: All-terrain and rough-terrain cranes.
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Port Machinery: Ship-to-shore cranes and reach stackers.
6. Our Services
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OEM/ODM: We can design non-standard slewing rings based on your specific drawing or sample.
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Technical Support: Assistance with bearing selection, mating gear design, and installation tolerance checks.
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After-Sales: Comprehensive warranty and lifetime supply of spare parts and lubrication solutions.
7. FAQ
Q1: What is the lead time for a tower crane slewing ring?
A: For standard models, we usually have stock and can ship within 7-15 days. For non-standard or large diameter bearings, the production time is typically 30-60 days.
Q2: Can you provide the matching pinion gear?
A: Yes, we can manufacture the mating pinion gear and drive assemblies to ensure perfect meshing with the slewing ring.
Q3: How do I lubricate the bearing?
A: Our bearings come with grease nipples. We recommend using Lithium-based grease (EP2) and re-lubricating every 100-200 operating hours depending on the workload.
Q4: Do you offer export packaging?
A: Yes, we use seaworthy packaging (wooden crates or pallets with rust-proof paper) to ensure the bearings arrive in perfect condition.
