Sumtiomo SH200A3 Travel Gearbox 2nd Planetary Carrier Spider With Sun Gear Assy for Excavator Parts

This paired assembly of secondary planetary spider and matched sun gear acts as the intermediate reduction core within the travel final drive of Sumitomo SH200A3 crawler excavators, widely deployed for urban site development, rock quarrying, highway rehabilitation and waterway dredging works across Africa, Southeast Asia and the Middle East construction markets.

Positioned in the second reduction stage of the travel gearbox, this planetary set bears fluctuating heavy torque under frequent start-stop travel, hill climbing and continuous digging cycles. When the carrier support lugs develop fatigue fractures, sun gear teeth suffer pitting and spalling, or internal splines suffer excessive wear, typical malfunctions will emerge: sluggish travel response, noticeable track speed deviation between left and right sides, persistent metal grinding noise and excessive heat buildup inside the travel motor. These breakdowns halt construction progress and bring extra repair expenditure for fleet owners, contracting teams and equipment rental firms.

Our assembly is machined in strict accordance with Sumitomo OEM drawing standards for gear tooth profile, spline clearance and mounting hole layout. No cutting, reaming or other field modifiion is needed during final drive overhaul, supporting direct plug-and-fit installation and minimizing machine downtime. As a budget-friendly aftermarket substitute for high-cost original Sumitomo components with lengthy import lead times, this unit maintains stable torque transfer at factory wholesale rates, well ering to the procurement needs of repair workshops, spare parts dealers and cross-border construction machinery suppliers.

1. 1:1 OEM dimension repliion, exclusive fit for Sumitomo SH200A3 travel reducer, cannot be interchanged with other models

   This planetary assembly is custom-built to match the inner cavity geometry of SH200A3 travel gearbox and cannot be fitted onto other Sumitomo variants such as SH200 or SH240. Precise recreation of original spline tolerance and gear meshing gap prevents transmission jitter, walking deviation and accelerated abrasion of mating drive parts after installation, no extra auxiliary fittings required during assembly.

2. Integral die forging forming, outstanding shock resistance and fatigue lifespan for long-duration continuous construction

   Many low-cost generic aftermarket planetary carriers easily suffer fractured support lugs and collapsed gear teeth under all-day heavy excavation loads. Our one-piece thick forging process with full-process constant-temperature heat treatment greatly boosts impact resistance and fatigue life. It sustains stable torque delivery during nonstop digging and short-distance site reloion, effectively cutting travel gearbox overhaul frequency for rental fleets and second-hand excavator operators.

3. Dual independent closed-loop inspection workflows to mitigate economic losses from unplanned machine downtime

   Every finished assembly undergoes two separate rigorous inspection sequences before factory dispatch. Full-range dimension calibration verifies all matching tolerances of gear surfaces and inner splines; simulated gravel impact torque aging test replies real-site working loads to validate long-term transmission stability. Substandard semi-finished goods are screened out in advance, helping repair shops and project contractors lower risk from sudden equipment halt.

4. Cost-effective aftermarket alternative to imported genuine Sumitomo spare parts to control routine maintenance cost

   Genuine Sumitomo planetary transmission components carry steep import tariffs and volatile supply cycles for SH200A3, a popular crawler excavator model in overseas construction markets. Our aftermarket assembly delivers equivalent load-bearing capability and service life as OEM products at factory wholesale pricing, substantially reducing annual equipment maintenance budgets for enterprises operating multiple SH200A3 units.

5. Flexible multi-channel global logistics for international construction machinery spare parts wholesalers

   In-stock goods can be arranged for shipment within 3 working days once payment confirmed. Air freight options er to urgent emergency repair orders from remote mountain construction zones; consolidated bulk sea freight and full-container shipments offer economical bulk procurement packages for distributors serving Southeast Asia, Africa, the Middle East and Central Asia.

Our manufacturing facility owns over 15 years of specialized R&D and mass production experience for Japanese brand excavator travel motor planetary spare parts, with Sumitomo SH series planetary carrier assemblies as our flagship product line. We operate a complete closed-loop production chain covering alloy steel die forging, 5-axis precision gear machining, constant-temperature professional heat treatment and finished heavy-load simulation testing. Self-developed impact torque test benches replie harsh quarry and road construction operating conditions to continuously upgrade product shock resistance and extend service cycles. Our planetary gear spare parts are exported to more than 50 countries and regions worldwide, building long-term stable strategic cooperation with global heavy machinery spare parts wholesalers.