514-9421 transmisión final para Caterpillar 324D L 324E 326F L 326D2 excavadora
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Contactos del vendedor
+86 199 246...
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+86 199 2461 6345
Países Bajos, Wouw
Países Bajos, Wouw
Integrated Travel Motor + Planetary Reduction Gearbox | Left Hand Final Drive | BELPARTS Mid-size Excavator Undercarriage Spare Parts
CAT Final Drive Assembly
1. Basic Information
Part Name: Full Final Drive (Hydraulic Travel Motor + Planetary Reducer Integrated Track Drive Unit, with drive sprocket)
OEM Part Definition:
514-9421 = Left Side Final Drive (LH, complete with motor + sprocket)
Matching right side counterpart: 514-9424 (RH Right Hand Final Drive)
Cross Interchange Part Numbers:
514-9420, 514-9422, 514-9423, 514-9425, 527-7079, 527-7080
Built-in sprocket part number: 145-3042 (Non-segmented sprocket group)
Compatible Excavator Models:
Caterpillar 324D L
Caterpillar 324E
Caterpillar 326F L
Caterpillar 326D2 (Serial prefix HM41 & up)
Available Quality Options:
✅ Genuine Original Factory New
✅ Professionally Fully Rebuilt (All internal wear components replaced + bench calibrated)
✅ High Precision Premium Aftermarket New
Warranty Policy: 12 months warranty for Genuine & Rebuilt units; 6–12 months for aftermarket assemblies
Approximate Net Weight: ~215 kg
Stock Status: In stock, shipped out within 3–7 working days after order confirmation
2. Key Features
Strictly manufactured to Caterpillar OEM drawings, perfectly matched hydraulic travel system for 324/326 series mid-size excavators, stable power output for digging, climbing and muddy-site operation
Built-in two-speed shift structure: high-speed mode for site relocation, low-speed high-torque mode for heavy-load traction and steep slope climbing
Integrated spring-applied hydraulic-release multi-disc parking brake + built-in counterbalance valve, effectively prevents track sliding on inclines and eliminates hydraulic shock during forward/reverse direction switching
Multi-stage planetary reduction gear design, large output torque, strong overload resistance, durable for long-cycle construction and aggregate yard working conditions
Direct bolt-on replacement: identical mounting hole layout, hydraulic port positions, sprocket spline interface; no cutting, welding or machining modification required during field repair installation
Forged alloy steel planetary gears with quenching & tempering heat treatment for excellent wear resistance; thick cast iron housing equipped with heavy-duty floating seal assembly to block mud, water and dust ingress, reduce oil leakage failure
Every finished assembly passes full hydraulic pressure testing, internal leakage inspection, brake function verification, two-speed shift test and running-in endurance check before delivery; ISO9001 & CE certified
3. Technical Specifications
Assembly Type: Complete Final Drive (Travel Motor + Planetary Reducer + Sprocket Integrated Unit)
Motor Type: Variable Displacement Axial Piston Travel Motor
Max System Relief Pressure: 35.5 MPa (355 bar)
Travel Mode: Switchable high/low two-speed travel
Brake Structure: Spring-applied static parking brake, hydraulic release
Reduction Form: Multi-stage planetary gear reduction
Side Note: 514-9421 = Left Side Only, cannot be reversely installed for right track
Matching Sprocket: OEM 145-3042 non-segmented drive sprocket pre-installed
4. Compatibility & Cross Reference List
Direct Fit Excavator Models
CAT 324D L, 324E, 326F L, 326D2 (S/N HM41-up)
Interchangeable Final Drive Part Numbers
514-9421, 514-9420, 514-9422, 514-9423, 514-9424, 514-9425, 527-7079, 527-7080
Matching Internal Sprocket PN
145-3042
5. BELPARTS Competitive Advantages
Over 13 years specializing in final drives and travel motors for 24–27 ton Caterpillar excavators
Three quality grades available to meet different maintenance budget and harsh working environment demands
Strict incoming & outgoing QC inspection system to guarantee long-term stable service life
Sufficient inventory stored in Guangzhou warehouse, flexible sea freight & air freight global shipping solutions
Professional engineering team provides on-site installation guidance, hydraulic fault troubleshooting and long-term technical after-sales support
Integrated one-piece assembly with sprocket pre-assembled, direct installation to shorten machine downtime greatly
6. FAQ
Q1: Can 514-9421 be used for the right track?
A: No. 514-9421 is dedicated left-hand final drive, 514-9424 is matching right-hand final drive; internal oil circuit layout differs, reversed installation causes walking weakness, speed abnormality or travel failure.
Q2: Can I replace only the travel motor head instead of the whole final drive?
A: Yes. If the planetary reduction gearbox and sprocket remain intact without damage or leakage, you can purchase separate motor head for overhaul to cut maintenance costs.
Q3: What is the difference between Rebuilt and Genuine New final drive?
A: Rebuilt final drive replaces all worn internal consumable parts (piston, valve plate, planetary gears, friction plates, oil seals), fully bench tested to OEM performance standard with cost advantages. Genuine New is original factory brand-new assembly fully compliant with Caterpillar factory specifications.
Q4: What is your delivery lead time?
A: Goods are in ready stock, dispatched within 3–7 working days after order confirmation, worldwide sea and air shipping options available.