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Komatsu D155A-1 D155A-2 Final Drive Gearbox 175-27-3125 | High-Torque Planetary Reduction Assembly | Heavy-Duty Crawler Dozer Traction Unit
| Place of Origin | China |
|---|---|
| Brand Name | IRON CAVALRY |
| Certification | CE， ISO |
| Model Number | Komatsu D155A-1 D155A-2 Final Drive Gearbox 175-27-3125 | High-Torque Planetary Reduction Assembly | Heavy-Duty Crawler Dozer Traction Unit |
| Minimum Order Quantity | 1 PCS |
| Price | Negotiable price |
| Packaging Details | Wooden case or as required |
| Delivery Time | 5-8 Weekdays |
| Payment Terms | Western Union,T/T |
| Supply Ability | 300pcs /Month |
Product Details
| Product Name | Komatsu D155A-1 D155A-2 Final Drive Gearbox 175-27-3125 | Applicable Machine Model： | Komatsu D155A-1 D155A-2 175-27-3125 |
|---|---|---|---|
| Applicable Industries： | MECHANICAL REPAIR SHOPS, RETAIL, CONSTRUCTION, ENERGY, MINING | Category | Final Drive / Travel Motor & Gearbox Assy |
| Condition： | NEW/REBUILT | Brand | IRON CAVALRY |
| Highlight | Komatsu D155A final drive gearbox,high-torque planetary reduction assembly,heavy-duty crawler dozer traction unit |
||
Product Description
Komatsu D155A-1 D155A-2 Final Drive Gearbox 175-27-3125
High-Torque Planetary Reduction Assembly | Heavy-Duty Crawler Dozer Traction Unit
The 175-27-3125 Final Drive Gearbox is a heavy-duty track propulsion unit engineered specifically for Komatsu D155A-1 and D155A-2 bulldozers in the 35-40 ton machine class. This integrated drivetrain combines a high-torque axial piston travel motor with a multi-stage planetary reduction gearbox, delivering the exceptional drawbar pull and structural integrity required for heavy dozing, ripping, and land clearing operations in mining, quarry, and large-scale earthmoving applications.
| Product Name | Komatsu D155A-1 D155A-2 Final Drive Gearbox 175-27-3125 | High-Torque Planetary Reduction Assembly | Heavy-Duty Crawler Dozer Traction Unit |
| Part Number | Komatsu D155A-1 D155A-2 175-27-3125 |
| Brand | IRON CAVALRY |
| Place of Origin | CHINA |
| Condition | Original & OEM |
| Warranty | 12 months |
| MOQ | 1 piece |
| Production Capacity | 1000 pieces per month |
| Standard or Nonstandard | Standard |
| Payment Terms | L/C, T/T, Western Union, Trade Assurance |
| Delivery Time | 3-7 days (depending on order) |
| Means of Transport | By Sea, Air or DHL/FEDEX/TNT/EMS |
| Quality Guarantee | We check and send detailed pictures to buyers for confirmation before shipment |
Regional Application & Market Suitability
These D155A series bulldozers operate in extreme conditions worldwide, and our final drive gearboxes are configured to withstand region-specific operational challenges:
- North America & Europe: Upgraded with reinforced planetary carriers and oversized taper roller bearings to handle continuous high-load cycles in coal mining overburden removal, highway construction, and heavy landfill compaction operations
- Southeast Asia & Oceania: Equipped with heavy-duty Duo-Cone floating seals and corrosion-resistant output shaft coatings to prevent contamination from abrasive volcanic soils, tropical clay, and coastal saline environments in plantation development and marine reclamation projects
- Middle East & South America: Enhanced thermal management through optimized oil circulation galleries and enlarged heat dissipation surfaces on the motor housing, maintaining stable operating temperatures during extended ripping and dozing operations in desert conditions exceeding 50°C ambient temperature
Key Features & Performance Advantages
- High-Torque Planetary Reduction: Multi-stage planetary gearset with optimized reduction ratios delivers maximum tractive effort for deep blade penetration in rocky terrain and ripping in fractured bedrock while maintaining productive travel speeds for cycle time efficiency in large-scale earthmoving operations
- Cross-Generation Compatibility: Engineered to fit both D155A-1 and D155A-2 undercarriage configurations, providing a unified replacement solution for mixed fleet maintenance programs across different machine series generations
- Structural Durability: Induction-hardened sun gears, carburized planetary pinions, and heat-treated alloy steel housing resist pitting, spalling, and structural cracking under repetitive shock loading from heavy dozing in abrasive materials and ripping in consolidated rock formations
- Direct OEM Replacement: All mounting bolt hole patterns, hydraulic port thread configurations (SAE O-ring boss and JIC 37° flare), and pilot line locations match original Komatsu specifications for seamless installation without undercarriage modifications or adapter plates
Expert Maintenance Guidance
- Hydraulic System Care: Routinely monitor case drain flow rate during every service interval; flow exceeding 18 L/min indicates internal motor wear requiring immediate teardown and rebuild inspection. Replace hydraulic return filters every 200 operating hours and pilot filters every 400 hours in severe dust conditions to prevent contaminant circulation through travel motor circuits
- Gear Oil Management: Drain and replenish planetary gearbox oil every 500 operating hours under moderate conditions, or every 250 hours in severe dust, high-temperature, or high-moisture environments. Use SAE 85W-140 API GL-5 gear oil for maximum load-carrying capacity under heavy shock loading; verify floating seal compatibility before substituting synthetic oils
- Mounting Hardware Protocol: Always install new OEM-specification mounting bolts with high-strength thread locker compound rated for extreme vibration applications. Tighten in a three-stage cross-pattern sequence at 40%, 70%, and 100% of specified torque to achieve uniform clamping force and prevent housing distortion under severe load conditions
- Pre-Operation Priming Procedure: Before initial engine start following final drive replacement, completely fill the travel motor housing with clean ISO VG 68 hydraulic oil through the uppermost port. Rotate the output sprocket manually in both directions using a pry bar to expel trapped air from piston chambers, then verify oil level before startup to prevent catastrophic dry-start damage to piston shoes, cylinder block, and valve plate surfaces
About IRON CAVALRY
Guangzhou Tieqi Construction Machinery Co., Ltd. (IRON CAVALRY) is strategically located in Guangzhou's Huangpu District. With nearly 15 years of experience, we specialize in engineering machinery hydraulics and are committed to delivering practical solutions and upholding our responsibilities.
Manufacturing Facility Exterior
Factory Production Line
Trade Show Exhibition
Professional Team
Technical Leadership & Standards
Our efficient execution and rigorous manufacturing approach ensure our products meet over 95% of original performance specifications. This commitment has built widespread trust in the industry.
Product & Inventory Capability
We maintain a ready inventory of over 500 assembly types, providing access to more than 6,000 different parts. Hydraulic pump, control valve, travel, and swing assemblies are our core products, with particular expertise in large mining excavator components and hard-to-find items.
Packaging & Delivery
For large items, we use sturdy plywood crates secured with metal fasteners. Products are cushioned with bubble wrap and secured with wooden braces, with special attention given to protecting vulnerable parts. External reinforcement includes high-strength PET plastic strapping and waterproof wrapping.
Secure Product Packaging Example
Why Choose IRON CAVALRY?
- One-stop solution provider for all hydraulic component needs
- High-quality products at competitive prices
- Exceptional customer service and support
- Large inventory, short delivery times, and long warranty periods
- Professional expertise with accurate part number identification
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