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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"}}
Kubota U25 U20 Final Drive RB511-61290 Travel Motor
The Travel Motor / Final Drive Assembly (Part No. RB511-61290) is a compact, high-torque propulsion unit engineered for the Kubota U20 and U25 mini excavators. Operating in the 2-2.5-ton machine class, this assembly combines a high-efficiency axial piston hydraulic motor with a precision multi-stage planetary reduction gearbox, delivering reliable tractive effort and smooth travel performance across a wide range of applications, including residential construction, utilities, landscaping, and agricultural work.
Designed as a direct replacement unit, it meets original Kubota specifications for fit, function, and hydraulic performance. Its shared mounting architecture allows it to serve both the U20 and U25 models, making it a versatile choice for mixed-fleet operators.
Product Specifications
Product Name
Kubota U25 U20 final drive RB511-61290 travel motor
Part Number
Kubota RB511-61290 travel motor
Compatible Machine
Hitachi Construction Machinery EX220-1 EX200-1 EX200-2
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: Sealing and component materials are selected for dependable cold-weather startup and consistent performance in wet, muddy conditions typical of landscaping and municipal utility projects.
Southeast Asia & Oceania: Heavy-duty floating seals and reinforced wipers resist the ingress of abrasive tropical soils, clay, and mud commonly encountered in drainage, foundation, and plantation work.
Middle East & Africa: High-temperature seals and corrosion-resistant housing surfaces provide effective protection against sand abrasion and thermal stress in arid, dusty environments.
Key Features & Performance Advantages
Cross-Model Compatibility: Precision-engineered to match the mounting dimensions, spline connections, and hydraulic porting of both the Kubota U20 and U25 models, offering simplified inventory management for mixed fleets.
Strong, Controllable Power Delivery: The axial piston motor provides high starting torque and smooth speed modulation, allowing confident travel on slopes, soft ground, and uneven terrain.
Durable Planetary Reduction: Case-hardened alloy steel gears with precision-ground tooth profiles ensure even load distribution, reduced wear, and extended intervals between major overhauls.
Robust Contamination Defense: Dual-cone floating seals and heavy-duty dust wipers keep water, mud, and debris out of the drive housing, preserving internal component integrity in demanding conditions.
Exact OEM Fit: All bolt patterns, pilot bores, and hydraulic connections conform to original Kubota specifications for a straightforward, time-saving installation.
Expert Maintenance Guidance
Hydraulic System Care: Routinely check case drain lines for kinks, restrictions, or blockages. A restricted drain can create excessive back pressure, leading to seal failure or damage to the motor's internal rotating group. Keep hydraulic fluid clean and replace return filters according to the machine's service schedule.
Gear Oil Management: Fill the planetary housing with the recommended extreme-pressure gear oil of the correct viscosity grade. Replace it every 250-500 operating hours under normal conditions, or every 250 hours in severe service. Inspect drained oil for metallic particles as an early indicator of gear or bearing wear.
Mounting Bolt Integrity: When reinstalling the assembly, always use new high-strength bolts. Apply a suitable thread locking compound and torque to factory specifications to prevent loosening from vibration and shock loads.
Pre-Start Priming Procedure: After installation or service, fill the motor housing with clean hydraulic oil to purge trapped air. Run the machine at low idle and cycle the tracks forward and reverse to ensure complete lubrication of all planetary components before resuming full-load operation.
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
