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{"title":"High Quality SANY SY485 Excavator Hydraulic Travel Motor with Gearbox Replacemen","imgUrl":"https:\/\/img.chinax.com\/nimg\/f9\/53\/b7269ae3b8b0688ec10c5d247073-200x200-1\/high_quality_sany_sy485_excavator_hydraulic_travel_motor_with_gearbox_replacement_part.jpg","attrs":{"Certification":"CE\u3001ISO","Brand Name":"IRON CAVALRY","Condition\uff1a":"NEW\/REBUILT","Delivery Time":"5-8 Weekdays"}}
{"title":"Final Drive M4V290\/170D GM85VA For SANY SY485 DOOSAN DX520 KOBELCO SK460","imgUrl":"https:\/\/img.chinax.com\/nimg\/19\/3f\/7f4ced34e75eea1397acebfa37fc-200x200-1\/final_drive_m4v290_2f170d_gm85va_for_sany_sy485_doosan_dx520_kobelco_sk460.jpg","attrs":{"Place of Origin":"China","Delivery Time":"5-8 Weekdays","Condition\uff1a":"NEW\/REBUILT","Payment Terms":"Western Union,T\/T"}}
{"title":"Use For Hitachi EX100-3 EX120-3 Excavators Travel Assembly 9133168 9122946 Final","imgUrl":"https:\/\/img.chinax.com\/nimg\/3c\/78\/4d8f00cb0f2c46c432cfec6b2c09-200x200-1\/use_for_hitachi_ex100_3_ex120_3_excavators_travel_assembly_9133168_9122946_final_drive_motor_gearbox_device_high_quality_construct.jpg","attrs":{"Brand Name":"IRON CAVALRY","Model Number":"Hitachi EX100-3 EX120-3 Excavators Travel Assembly 9133168 9122946 Final Drive Motor Gearbox Device High Quality","Place of Origin":"China","CertifiTQCATion":"CE\uff0c ISO"}}
{"title":"Heavy Duty Final Drive Complete Travel Motor Assembly 144-5196 for TQCAT 301 301","imgUrl":"https:\/\/img.chinax.com\/nimg\/71\/54\/918d4c1741f8d46c30063c9aff43-200x200-1\/heavy_duty_final_drive_complete_travel_motor_assembly_144_5196_for_tqcat_301_301_5_301_6_mini_crawler_excavator_premium.jpg","attrs":{"Packaging Details":"Wooden case or as required","Brand Name":"IRON CAVALRY","Payment Terms":"Western Union,T\/T","Supply Ability":"300pcs \/Month"}}
{"title":"Use For CAT 349D2 352F 349E 349F Excavators Travel Assembly 513-0982 513-0981","imgUrl":"https:\/\/img.chinax.com\/nimg\/e8\/fd\/cd3ef1342be0020671efe4978c2e-200x200-1\/use_for_cat_349d2_352f_349e_349f_excavators_travel_assembly_513_0982_513_0981_513_0979_518_1211_527_7097_final_drive_assembly_devi.jpg","attrs":{"Brand Name":"IRON CAVALRY","Model Number":"CAT 349D2 352F 349E 349F Excavators Travel Assembly 513-0982 513-0981 513-0979 518-1211 527-7097 Final Drive Assembly Device High Quality","Place of Origin":"China","CertifiTQCATion":"CE\uff0c ISO"}}
{"title":"Heavy-Duty Final Drive Motor fits Komatsu PC220-7 PC220LC-7 | 206-27-00422 |","imgUrl":"https:\/\/img.chinax.com\/nimg\/f8\/71\/2da7df3af892c05ce1fb803b9872-200x200-1\/heavy_duty_final_drive_motor_fits_komatsu_pc220_7_pc220lc_7_7c_206_27_00422_7c_rugged_earthmoving_traction_assembly.jpg","attrs":{"Applicable Industries\uff1a":"MECHANICAL REPAIR SHOPS, RETAIL, CONSTRUCTION, ENERGY, MINING","Brand Name":"IRON CAVALRY","Model Number":"Heavy-Duty Final Drive Motor fits Komatsu PC220-7 PC220LC-7 | 206-27-00422","Price":"Negotiable price"}}
Hitachi EX120-2 EX100-2 Excavators Final Drive Assembly
The Final Drive Gearbox Motor (Part No. 9116398) for Hitachi EX120-2 and EX100-2 excavators is a heavy-duty travel propulsion unit engineered for medium-scale construction, utility, and earthmoving operations in the 10-to-12-ton machine class. This assembly integrates a high-displacement axial piston hydraulic motor with a rugged multi-stage planetary reduction gearbox, delivering exceptional tractive effort and reliable travel performance under sustained heavy-load conditions. It is designed as a direct OEM replacement, ensuring precise fitment and factory-specified hydraulic performance for both machine models.
Product Specifications
Product Name
Hitachi Construction Machinery EX120-2 EX100-2 Final Drive Gearbox Motor 9116398
Part Number
9116398
Compatible Machine
EX120-2 EX100-2
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
Regional Application & Market Suitability
North America & Europe: Engineered for heavy civil construction, road building, and infrastructure projects, with reinforced housing and enhanced sealing to withstand extreme temperature variations, abrasive materials, and continuous high-cycle operation.
Southeast Asia & Oceania: Equipped with heavy-duty floating seals that resist ingress of highly abrasive laterite soils, clay, and tropical mud common in mining and large-scale earthworks projects.
Middle East & Africa: High-temperature seals and corrosion-resistant materials protect against sand erosion, thermal stress, and airborne particulate contamination in arid desert and semi-arid environments.
Key Features & Performance Advantages
High-Torque Axial Piston Motor: The swashplate-type motor design delivers strong starting torque and smooth speed control, enabling efficient tracking on steep slopes, soft ground, and uneven terrain typical of medium-scale excavation projects.
Multi-Stage Planetary Reduction: The gearbox employs case-hardened alloy steel planetary gears with precision-ground tooth profiles, ensuring uniform load distribution across multiple stages and maximizing service life between major rebuilds.
Cross-Model Compatibility: Engineered to fit both EX120-2 and EX100-2 excavators with identical mounting dimensions, pilot bores, spline connections, and hydraulic port locations, providing exceptional flexibility for mixed fleet maintenance and inventory management.
Precision OEM Replacement Fit: All mounting bolt patterns, pilot diameters, spline connections, and hydraulic port locations match original Hitachi specifications, enabling seamless installation with minimal machine downtime.
Industrial-Grade Structural Integrity: The ductile iron housing features reinforced ribbing and stress-relieved construction to resist structural fatigue under continuous shock loading from tramming over rough terrain. Dual-cone floating seals with heavy-duty dust wipers provide robust protection against contamination in the harshest environments.
Expert Maintenance Guidance
Hydraulic System Care: Routinely inspect case drain lines for restrictions, kinks, or blockages. A restricted drain line can generate excessive back pressure, leading to catastrophic motor rotary group failure or seal damage. Maintain strict hydraulic fluid cleanliness standards and replace return filters at intervals prescribed for heavy equipment.
Gear Oil Management: Fill the planetary housing with the recommended extreme-pressure gear oil of the correct viscosity grade for heavy-duty applications. Change the oil every 250-500 operating hours under normal conditions, and every 250 hours in severe applications such as continuous quarry work, demolition, or heavy ripping. Perform regular oil sampling and analysis to detect metallic particles as an early indicator of gear or bearing degradation.
Mounting Bolt Protocol: When reinstalling the final drive gearbox motor, always fit new high-strength bolts meeting the specified grade. Apply a suitable thread locking compound to the bolt threads prior to torquing to factory specifications, preventing loosening caused by extreme vibration and shock loads during travel and digging cycles.
Pre-Operation Priming Procedure: Before initial startup or after final drive replacement, fill the motor housing with clean hydraulic oil to purge trapped air pockets. Run the machine at low idle for several minutes, cycling the tracks forward and reverse, to ensure complete lubrication of all planetary components before engaging heavy production loads.
Manufacturing Facility
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.
Manufacturing Facility Exterior
Factory Production Line
Trade Show Exhibition
Professional Team
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
Introduction to Guangzhou Tieqi Construction Machinery Company
Founded in 2010 and headquartered in Guangzhou, China, Guangzhou Tieqi Construction Machinery Co., Ltd. is an integrated manufacturing and trading company specializing in hydraulic system components for construction and mining machiner...
Introduction to Guangzhou Tieqi Construction Machinery Company
Founded in 2010 and headquartered in Guangzhou, China, Guangzhou Tieqi Construction Machinery Co., Ltd. is an integrated manufacturing and trading company specializing in hydraulic system components for construction and mining machiner...
