130.50.3150 Slewing Bearing – Heavy-Duty Three-Row Roller Design for Offshore & Mining Applications

Our 130.50.3150 Slewing Bearing is a three-row, non-geared roller slewing ring designed to handle heavy loads in offshore cranes, ladle turrets, and bucket-wheel excavators. With an inner diameter of 2868mm, an outer diameter of 3432mm, and a height of 270mm, this bearing has a higher axial, radial, and moment load capacity thanks to its separate raceway design. Making this product from 50Mn or 42CrMo high-strength steel with precise grades ranging from P0 to P4 ensures reliable performance in harsh marine, metallurgical, and mining environments where equipment failure costs a lot of money in lost time.

Technical Specifications

Structural Design & Operating Principle

The product has three rows of rollers with separate raceways that distribute load optimally across axial and rotational lines. Cylindrical rollers, unlike ball-type designs, make line contact, which greatly increases stiffness and load-carrying capacity—essential for applications that need to run all the time. The gearless design makes it easier to install and lighter, which makes it perfect for projects that want to use external drive systems or Gear old equipment.

Key Features of the Structure:

· Three-row roller layout: the axial roller rows at the top and bottom handle axial loads and falling moments as a force couple, and the radial roller row in the middle handles radial loads.

· Independent raceways: Keep stress from building up and make tiredness last longer.

· Gearless interface: No gear teeth wear and multiple attachment positions are possible.

Material Engineering & Heat Treatment

Your equipment's uptime depends on material integrity. The product utilizes 50Mn or 42CrMo alloy steel, selected for superior tensile strength and fatigue resistance under cyclic loading.

Heat Treatment Process:

· Raceway induction hardening: Achieves surface hardness of 55–62 HRC with effective case depth of 3–5mm, resisting brinelling and spalling.

· Through-hardening option: For extreme shock loads, full-section tempering enhances core toughness.

· Quality control: Hardness profiling, microstructure analysis, and ultrasonic testing ensure zero subsurface defects.

This process directly addresses the common industry concern: Can slewing bearing handle heavy load? By fortifying raceways through optimized quenching cycles, we prevent raceway cracking under peak operational stress.

Application Scenarios

Offshore Crane Slewing Bearing

Marine environments demand corrosion resistance and vibration damping. The 130.50.3150 slewing bearing features zinc-rich primer coating and triple-lip seals to withstand saltwater spray, preventing pitting corrosion that shortens service life. Offshore operators benefit from reduced maintenance intervals and predictable replacement schedules.

Tower Crane Slewing Bearing

For construction sites, installation speed and precision matter. This bearing's modular design enables rapid field assembly, while P5/P4 precision grades minimize wobble during load hoisting—critical for high-rise projects where rotational accuracy affects safety.

Customized Slewing Bearing Solutions

Non-standard working conditions require non-standard solutions. When your existing equipment lacks original drawings, Luoyang Heng Guan Bearing's on-site measurement and reverse engineering service provides precise replication. Our engineers conduct field surveys at ports, mines, or construction sites, capturing dimensional data, wear patterns, and bolt-hole configurations. Through reverse CAD modeling and compensatory optimization design, we deliver OEM slewing bearing replacements that match or exceed original specifications—without waiting for obsolete factory parts.

Customization & OEM Replacement Capabilities

Why choose customized slewing bearing manufacturing?

· No original drawings required: On-site measurement technology captures critical geometry.

· Optimized performance: Upgraded materials and enhanced sealing extend service life beyond OEM parts.

· Cost efficiency: Domestic manufacturing reduces procurement costs by 30–50% versus imported alternatives.

· Fast turnaround: In-stock product ships within 7–15 days from stock. Custom setups take 4–6 weeks, depending on intricacy.

Reverse Engineering Service Process:

1. 1.Field exam: Engineers come to your place with portable CMMs and laser scanners to do a check.

2. 2.Wear analysis: Look at the ways things can fail (such as flaking, corrosion, and distortion) to help with rebuilding.

3. 3.CAD reconstruction: Make 3D models that account for tolerances.

4. 4.Validation of the prototype: testing samples under realistic load conditions.

5. Batch production: CNC vertical lathes, gear hobbing machines, and automated quenching lines make sure that the same thing is done over and over again.

Quality Assurance & Factory Certifications

Luoyang Heng Guan Bearing Technology operates under ISO 9001:2015 quality management systems, with products meeting DIN, ISO, and JB/T 2300-2011 standards. Our facility houses:

· CNC vertical lathes (Ø10m capacity): For machining large-diameter rings.

· Induction hardening CNC machines: Programmable quenching profiles ensure uniform hardness.

· Coordinate measuring machines (CMM): Verify geometric tolerances to ±0.02mm.

· Fatigue testing rigs: Simulate 10⁶ load cycles to validate L10 life predictions.

Every product undergoes 100% dimensional inspection, hardness mapping, and magnetic particle testing before shipment. Full traceability from raw material mill certificates to final assembly records ensures accountability.

FAQ

Q: How long does the product last?

A: Service life depends on load conditions and lubrication. Under rated loads with proper maintenance, expect 20,000–30,000 operating hours. Our optimized heat treatment and wear-resistant materials extend life by 25% compared to standard designs.

Q: Can you provide OEM slewing bearing replacement for discontinued models?

A: Yes. Our reverse engineering service replicates obsolete bearings without original drawings, ensuring 1:1 dimensional compatibility.

Q: What sealing prevents contamination in offshore environments?

A: Triple-lip FKM seals with labyrinth grooves block saltwater and abrasive particles, maintaining grease integrity in marine conditions.

Request a Technical Quote

Whether you need the 130.50.3150 slewing bearing for an offshore crane on a new vessel, a retrofit solution for aging mining equipment, or engineering support for load analysis, our team provides practical answers. Add this page to your reference library, download our dimensional drawings, or confirm compatibility requirements directly. For detailed specifications or sample availability inquiries, contact our engineering team at mia@hgb-bearing.com today.