Digger Slew Ring

1.Product Introduction: Commonly known as excavator slewing bearings, suitable for 6 - 30 tons of medium and large excavators, capable of bearing high-strength loads and impacts, and adapting to harsh working conditions in mines and infrastructure projects.
2.Structure Type: It has a large-diameter annular thick-wall structure. The inner and outer rings are made of high-strength steel, with built-in double-row steel balls or rollers. Metal skeleton seals are used to prevent sediment, and countersunk mounting holes are suitable for high-strength bolts.
3.Size Range: Outer ring diameter: 800 - 4000mm, inner ring diameter: 700 - 3800mm, height: 30 - 150mm.
4.Material: Inner ring / outer ring: 50Mn, 42CrMo; rolling elements: GCr15 bearing steel, GCr15SiMn (optional for impact resistance); seals: nitrile rubber, fluororubber (optional for oil and high temperature resistance).
5.Application Fields: 6 - 30 tons of medium and large excavators, mining excavators, heavy construction machinery (crawler cranes).
6.Key Inspection Items: Anti-overturning moment performance, integrity of metal seals.

Product Description

High-Performance Digger Slew Rings for Heavy-Duty Applications

When your heavy machinery faces relentless demands—from mining sites to infrastructure projects—every component must deliver unmatched durability. At LUOYANG INNO BEARING CO., LTD, we engineer digger slew rings that redefine reliability. Designed for excavators (6-30 tons), our slew rings withstand axial forces up to 50,000kN, radial loads exceeding 30,000kN, and operate seamlessly in temperatures ranging from -40°C to 120°C. With ISO 9001-certified production and a 99.9% defect-free guarantee, we ensure your equipment stays productive even in the most abrasive conditions.

Engineering Excellence for Heavy-Duty Applications

Our excavator Slewing Bearings combine high-purity forged steel (50Mn/42CrMo) with advanced heat treatment, achieving surface hardness of 55-60 HRC. Key features include:

  • Double-row roller design: Distributes heavy loads evenly, reducing stress concentrations by 30%.
  • IP6X sealed raceways: Prevent dust, mud, and moisture ingress—critical for mining and construction sites.
  • Precision-ground gear teeth: Maintain ≤0.1mm radial runout for smooth rotation under high torque.

Technical Specifications

Parameter Specification
Diameter Range φ800mm – φ5000mm
Material 50Mn, 42CrMo, GCr15SiMn
Load Capacity Axial: 50,000kN; Radial: 30,000kN
Temp Range -40°C to 120°C

Custom Solutions & Quality Assurance

Need non-standard dimensions? Our modular production system delivers custom digger slew rings in 15-20 days—50% faster than industry averages. We use 3D scanning and CAD simulations to optimize gear tooth profiles and ensure compatibility with CAT, Komatsu, and Hitachi excavators.

Every slewing ring for excavators undergoes:

  1. Ultrasonic testing: Detects subsurface flaws in raw materials.
  2. 3D coordinate measurement: Verifies gear profile accuracy within ±0.05mm.
  3. Fatigue testing: Simulates 50,000+ operational cycles to validate lifespan.

Maximize ROI with Smart Engineering

  • IoT-enabled slew rings: Monitor load distribution and wear in real time via integrated sensors.
  • Lifecycle cost analysis: Compare 10-year operational savings (up to 35% vs. conventional bearings).
  • Old bearing recycling: Offset costs by trading in worn components.

FAQs

Q: How do your products handle abrasive environments like mining?
A: We use SUJ2 steel rollers and fluororubber seals to resist particulate wear and chemical corrosion, extending service life by 30%.

Q: Can you create slew rings for legacy excavator models?
A: Yes! Our engineers perform on-site dimensional mapping to retrofit older equipment with precision-fit bearing replacements.

Q: How fast can you deliver a φ4000mm custom slew ring?
A: Just 15-20 days post-design approval—supported by pre-machined semi-finished blanks in our inventory.

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