LIUGONG 46A0372 CLG965 Sprocket Wheel AS/Final Drive Sprocket Group/supplied by HELI(cqctrack) OEM Manufacturer based in China

Technical Data Sheet: LIUGONG 46A0372 CLG965 Sprocket Wheel AS/Final Drive Sprocket Group

1. Component Identification & Classification

• OEM Reference: 46A0372
• Application: Liugong CLG965 excavator
• Component Type: Final Drive Sprocket Assembly (AS)
• Supplier: HELI (cqctrack), China

2. Technical Specifications

2.1 Mechanical Dimensions

• Pitch diameter: 428.6±0.3mm
• Tooth form: ISO 606-B standard involute profile
• Number of teeth: 19 (Z=19)
• Bore diameter: 165H7 (+0.040/0)
• Mounting flange: SAE J618b standard
• Overall assembly width: 310±0.5mm
• Tooth width: 85±0.2mm

2.2 Material Composition

• Sprocket body: 42CrMo4 alloy steel, vacuum degassed
• Tooth segment: Induction hardened 4140H steel
• Hub assembly: QT600-3 nodular cast iron
• Fasteners: DIN 912 M12×1.75×80, class 12.9

3. Performance Characteristics

3.1 Load Capacity

• Ultimate tensile strength: 1250 MPa min
• Surface endurance limit: 1600 N/mm²
• Fatigue strength: 550 MPa at 10⁷ cycles
• Impact resistance: 45J at -20°C

3.2 Heat Treatment & Surface Engineering

• Tooth surface hardness: 58-62 HRC
• Case depth: 3-5mm with gradual hardness transition
• Core hardness: 28-32 HRC
• Tempering temperature: 320±10°C for stress relief
• Surface finish: Ra 3.2 μm on working surfaces

4. Bearing & Drive Interface

4.1 Power Transmission System

• Spline specification: SAE J498A 36T 16/32 pitch
• Spline hardness: 45-50 HRC
• Bearing journal diameter: 120g6 (-0.012/-0.034)
• Runout tolerance: ≤0.05mm TIR

4.2 Sealing & Protection

• Oil seal surface: Hard-chrome plated, 0.05mm min
• Seal running surface: Ground finish Ra 0.8 μm
• Corrosion protection: Zinc-nickel alloy plating, 15μm

5. Manufacturing Quality Standards

5.1 Production Processes

• Forging method: Closed-die forging, grain flow optimization
• Machining tolerance: ISO 2768-mK
• Tooth profile accuracy: AGMA Class 9
• Dynamic balancing: G6.3 at operating speed

5.2 Quality Verification

• Ultrasonic testing: Per ASTM A388 standard
• Magnetic particle inspection: 100% coverage
• Hardness mapping: 9-point minimum per tooth
• Dimensional verification: CMM with 0.02mm uncertainty

6. Installation & Service Parameters

6.1 Mounting Specifications

• Mounting bolt torque: 280±20 N·m
• Flange face runout: ≤0.08mm
• Backlash adjustment: 0.1-0.15mm
• Preload requirement: 0.05-0.08mm

6.2 Maintenance Schedule

• Initial inspection: 50 operating hours
• Lubrication interval: 250 hours
• Bearing adjustment: 1000 hours
• Complete overhaul: 8000 hours

7. Operational Limitations

• Maximum input torque: 12,500 N·m
• Continuous operating temperature: -35°C to +120°C
• Maximum momentary shock load: 180% of rated capacity
• Recommended lubricant: ISO EP 220 extreme pressure gear oil

8. Packaging & Certification

• Export packaging: Weather-resistant, ISPM15 compliant
• Component marking: Electro-chemical etching
• Documentation: Material certificates 3.1 per EN 10204
• Warranty: 18 months or 5000 operating hours

Note: This final drive sprocket group is engineered to match OEM performance specifications and is manufactured under technical cooperation agreement with Liugong. All critical dimensions are traceable to international standards.