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High Precision Excavator Slewing Ring Bearing - Heavy Duty Single Row Ball, Internal Gear, Customized for Crane & Construction Machinery (Factory

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High Precision Excavator Slewing Ring Bearing - Heavy Duty Single Row Ball, Internal Gear, Customized for Crane & Construction Machinery (Factory

Brand Name : OEM, neutral/HRB/LYC/ZWZ/NSK/SKF/NTN/KOYO/FAG

Model Number : 120.25.500/120.25.560/120.25.630/120.25.710/120.28.800/120.28.900/120.28.1000/120.28.1120/120.32.1250/120.32.1400/120.32.1600/120.32.1600.03K/120.32.1800/120.40.2000/120.40.2240/120.40.2500/120.40.2800/120.50.3150/120.50.3550/120.50.4000/120.50.4500

Place of Origin : China

MOQ : 1(negotiation)

Price : negotiation

Payment Terms : L/C,T/T,Western Union

Supply Ability : 50,000pcs/month

Delivery Time : 15days(as per order)

Packaging Details : sea worthy standard

Product Type : 1. Single Row Four-Point Contact Ball Slewing Bearing2. Double Row Angular Contact Ball Slewing Bearing3. Single Row Cross Roller Slewing Bearing4. Three-Row Cylindrical Roller Slewing Bearing

Material : High-Carbon Chromium Steel

Diameter Range : 100mm - 15,000mm (Customizable; Large-sized bearings can be segmented for transportation)

Precision Grade : P0, P6, P5 (Optional); Surface Roughness: Ra ≤ 0.2μm; Axial Clearance: 0.02-0.05mm (Adjustable)

Customization : Accept

Lubrication : Grease / Oil

Packing : Customer Requirement

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Product Overview

Our slewing ring bearing (slewing bearing) is designed for heavy-duty rotary applications in Southeast Asia's infrastructure, mining, and renewable energy sectors. Suitable for excavators, cranes, wind turbines, solar trackers, and port machinery.

Technical Specifications
ParameterData
Inner diameter range200 mm – 5000 mm
Outer diameter range400 mm – 5500 mm
Height range50 mm – 300 mm
Gear typesInternal gear, external gear, non-gear
Raceway typesSingle row ball, double row ball, three row roller, cross roller
Material50Mn, 42CrMo (forged steel)
Heat treatmentInduction hardening, HRC 55-62
SealingDouble lip rubber seal (IP66 optional)
LubricationPre-filled with grease, lubrication holes provided
Precision gradeP0, P5, P6 (ISO standard)
Applicable Standards & Certifications
  • ISO 9001:2015 certified
  • GB/T 2299-2002 standard
  • Third-party inspection available (SGS, BV, TÜV)
Application Scenarios by Market

Excavators & Cranes (Vietnam, Indonesia)
Direct replacement for Komatsu, Hitachi, Kobelco.Single row ball and double row ball types available. Internal or external gear options to match original equipment specifications.

Wind Turbines & Solar Trackers (Vietnam, Thailand)
Cross roller design with high precision rotation. Corrosion-resistant coating suitable for tropical humid climate. Low friction torque for tracking accuracy.

Port & Marine Equipment (Singapore, Malaysia)
Three row roller type for extreme heavy loads. IP66 sealing rating for water and dust protection. Design life of 20+ years under continuous operation.

Material & Process Highlights
  • Forged steel rings for higher strength and fatigue resistance
  • Induction hardened raceways with uniform hardness depth
  • Precision gear cutting with gear accuracy up to ISO 7
  • 100% ultrasonic testing for internal defects
Quality Control
  • Raw material certificate (mill test report)
  • Dimensional inspection during and after production
  • Magnetic particle inspection for surface cracks
  • Hardness testing on raceway and gear teeth
  • Rotation torque test before packing
Packing & Delivery
  • Anti-rust oil coated on all exposed surfaces
  • Plastic wrap + craft paper + waterproof film
  • Wooden crate with steel strapping for sea freight
  • Loading supervision available upon request
Why Choose Us
  • Factory direct pricing
  • MOQ: 1 piece accepted
  • Technical drawings support (CAD, PDF)
Current bearing designationDimensions(mm)weigh
dDT(kg)
Type120



XU12022214030036
120.25.500398602758O
120.25.5604586627590
120.25.63052873275100
120.25.71060881275110
120.28.80067892282170
120.28.900778102282190
120.28.1000878112282210
120.28.1120998124282230
120.32.12501110139091350
120.32.14001260154091400
120.32.16001460174091400
120.32.1600.03K14601740100429
120.32.18001660194091500
120.40.200018252178112900
120.40.2240206524181121000
120.40.2500232526781121100
120.40.2800262529781121250
120.50.3150292233761342150
120.50.3550332237761342470
120.50.4000377242261342800
120.50.4500427247261343100

Product Tags:

High precision excavator slewing bearing

      

Heavy duty slewing ring with internal gear

      

Customized slewing bearing for construction machinery

      
Wholesale High Precision Excavator Slewing Ring Bearing - Heavy Duty Single Row Ball, Internal Gear, Customized for Crane & Construction Machinery (Factory from china suppliers

High Precision Excavator Slewing Ring Bearing - Heavy Duty Single Row Ball, Internal Gear, Customized for Crane & Construction Machinery (Factory Images

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