Final drive for Kubota KX101-3 KX91-2 U30-3 / -5 excavator
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1. Product Overview
These final drives are high-torque, compact units designed to fit the narrow undercarriages of mini excavators. Whether you are replacing a unit on a Volvo EC30 or a Yuchai YC35, these drives provide the essential power for counter-rotation, climbing gradients, and traveling across rough terrain. Most of these models utilize a 9-bolt or 10-bolt sprocket mounting pattern and a standard frame flange.
2. Technical Specifications & Performance
Component Type: Axial Piston Travel Motor & Planetary Reducer
Machine Class: 2.5 Ton – 4.5 Ton Mini Excavators
Motor Speed: Dual Speed (High/Low Displacement)
Maximum Output Torque: 2,500 – 4,800 Nm
System Operating Pressure: 210 – 250 Bar (21.0 – 25.0 MPa)
Standard Sprocket Mounting: 9-Hole / 10-Hole / 12-Hole (Brand Specific)
Frame Mounting: Standard Pilot Diameter (OEM Fit)
Compatibility: Kobelco SK40, Bobcat 331/425, Kubota KX101/U30, Volvo EC30, Case CX36
Seal Type: Duo-Cone Floating Mechanical Seals
Warranty: 1-Year Quality Guarantee
Lead Time: 3–7 Working Days
3. Application Compatibility List
Kobelco: SK40, SK40SR, SK45, SK30SR-2
Bobcat: 331, 331D, 331E, 334, 425, 428, X331
Kubota: KX101, KX101-3, U30, U30-3, KX91-2, KX91-3
IHI / Imer: 25J, 28N, 30J, 35J, 35N
Volvo: EC30, ECR28, ECR38
CASE: CX31, CX36, CX36B
Yuchai: YC35, YC35-6, YC35-7, YC35-8
4. Key Engineering Advantages
Dual-Speed Switching: Integrated automatic or manual "rabbit/turtle" speed shifting, allowing for high torque during excavation and high speed during site transit.
Precision Planetary Gearing: Heat-treated gears and high-quality sun shafts ensure quiet operation and a long service life under heavy radial loads.
Floating "Duo-Cone" Seals: High-performance mechanical seals prevent oil leaks and protect the internal gears from mud, water, and sand ingress.
Direct Interchangeability: Specifically designed to match OEM dimensions for hydraulic port locations (A, B, Pi, and Drain) and frame mounting pilots.
5. Supply Range & Brand Expertise
We specialize in professional-grade drivetrain and hydraulic components for:
Drivetrain: Final Drives, Travel Motors, Swing Reducers, and Swing Motors.
Hydraulics: Main Piston Pumps, Control Valves, and Gear Pumps.
Undercarriage: Sprockets, Idlers, and Track Rollers.
Extensive Brand Coverage: Kubota, Bobcat, Kobelco, Volvo, Case, Yanmar, Takeuchi, Hitachi, Komatsu, and more.
6. Global Logistics & Service
Express Shipping: Fast delivery via UPS, DHL, FedEx, and TNT.
Global Support: Assistance with Air Freight and DDP (Delivered Duty Paid) options to simplify customs.
Service Commitment: Every unit is pressure-tested and torque-verified before shipping to ensure immediate "plug-and-play" reliability.