Premium Replacement Slewing Bearings for Liebherr Cranes | ZZ Industry
🏗️ Introduction: Precision Engineered for Liebherr Mobile Cranes
At ZZ Industry, we understand that the uptime of your Liebherr mobile crane is critical to your operation. As a professional slewing bearing manufacturer, we specialize in producing high-performance slewing rings (turntable bearings) designed as direct replacements for original Liebherr crane parts.
Our engineering team has meticulously analyzed the load capacities and dimensional tolerances of popular Liebherr series (including the LTM and LG series). We deliver slewing bearings that offer 100% dimensional interchangeability and superior rotational accuracy, ensuring your crane operates with the same reliability as the day it left the factory—but at a fraction of the cost.
⚙️ Product Performance & Quality
Our slewing bearings for Liebherr cranes are built to withstand extreme dynamic loads and harsh environmental conditions. We utilize advanced heat treatment processes and high-grade steel to ensure longevity.
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High Load Capacity: Designed to handle complex combined loads, including significant axial forces, radial forces, and tilting moments simultaneously.
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Precision Gearing: Our external gear teeth are induction hardened and precision-ground to ensure smooth meshing with the slewing drive motor, minimizing backlash and wear.
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Robust Sealing: Equipped with multi-lip rubber seals (often double seals) to prevent grease leakage and protect against water, dust, and debris ingress (IP67 protection level available).
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Material Integrity: We use vacuum-degassed steel (similar to standards like 42CrMo4 or 50Mn) to ensure a clean microstructure, reducing the risk of spalling or cracking under heavy stress.
📊 Technical Specifications
We manufacture a wide range of slewing bearings compatible with Liebherr cranes, ranging from small diameters for compact units to large diameters for heavy-duty all-terrain cranes.
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Parameter
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Specification Details
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Bearing Type
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Single-row Four-Point Contact Ball / Crossed Roller / Three-row Roller
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Outer Diameter (OD)
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200mm – 3000mm (Custom sizes available)
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Gear Type
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External Teeth (Hardened), Internal Teeth, or No Gear
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Material
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42CrMo4, 50Mn, 100Cr6 (AISI 52100)
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Hardness
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Raceway: 55-62 HRC; Gear Teeth: 50-58 HRC
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Sealing
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NBR / FKM (Viton) Seals
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Lubrication
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Grease (Lithium complex EP2) with grease nipples
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Mounting
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Bolt holes (tapped or through holes)
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Note: We can produce bearings matching Liebherr OEM part numbers. Please contact our engineering team for specific dimension matching.
🏅 Certifications & Standards
Quality is not just a promise; it is a documented process at ZZ Industry. Our manufacturing facility adheres to strict international standards to ensure safety and reliability.
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ISO 9001:2015: Certified Quality Management System.
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DIN / ISO Standards: Manufactured in accordance with DIN 6923, ISO 281, and relevant slewing bearing standards.
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Traceability: Full material test reports (MTRs) and heat treatment charts are provided for every batch.
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Third-Party Inspection: We welcome inspections by SGS, BV, or TUV prior to shipment.
🛠️ Product Applications
Our slewing rings are primarily designed for heavy lifting and construction machinery. While optimized for Liebherr cranes, they are suitable for various heavy-duty applications:
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All-Terrain Cranes: (e.g., Liebherr LTM 1000, LTM 11200 series)
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Rough Terrain Cranes: (e.g., Liebherr LRT series)
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Crawler Cranes: (e.g., Liebherr LR series)
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Industrial Robots & Positioning Tables
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Wind Turbine Pitch Systems
🤝 ZZ Industry Services
We go beyond simple manufacturing. We act as your technical partner.
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OEM Replacement: We can replicate the exact specifications of your worn-out Liebherr bearing.
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Retrofitting Solutions: If you cannot find an OEM part, our engineers can redesign a bearing to fit your existing housing and pinion.
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Fast Global Shipping: We utilize wooden crate packaging suitable for ocean and air freight to ensure the bearings arrive rust-free and undamaged.
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After-Sales Support: Technical guidance on installation torque and lubrication schedules.
❓ Frequently Asked Questions (FAQ)
Q1: Can ZZ Industry manufacture a direct replacement for Liebherr Part No. [Insert Number]?
Yes. Please send us the technical drawing or the OEM part number. We have a vast database of Liebherr dimensions and can manufacture a 1:1 replacement.
Q2: What is the lead time for a slewing bearing for an LTM crane?
For standard models, our lead time is typically 4-6 weeks. For custom or large-diameter bearings (>2 meters), it may take 8-10 weeks.
Q3: Do you provide installation tools?
We provide the bearings with pre-drilled mounting holes. While we do not provide hydraulic torque wrenches, we supply a detailed installation manual specifying the required bolt grades and tightening torques.
Q4: How do you ensure the gear teeth match my existing pinion?
We require the module (m) and pressure angle of your existing pinion gear. Our CNC gear hobbing machines ensure the tooth profile matches perfectly to prevent skipping or grinding.
Q5: What is your minimum order quantity (MOQ)?
Our MOQ is 1 set. We understand that crane maintenance often requires immediate single-unit replacement.
Contact ZZ Industry today for a quote on your Liebherr crane bearing replacement. Let us keep your crane rotating smoothly.
