Sumtiomo SH200 Travel Gearbox 2nd Planetary Carrier Spider With Sun Gear Assy

This integrated secondary planetary carrier spider paired with matching sun gear functions as the intermediate torque reduction core inside Sumitomo SH200 multi-stage travel final drive, purpose-built for Sumitomo SH200 crawler excavators widely used in municipal earthmoving, road upgrading, quarry exploitation and river dredging projects across Southeast Asia, Africa and Middle Eastern construction markets.

Sitting between the 1st and 3rd reduction stages of the travel gearbox, this 2nd planetary assembly endures alternating heavy torque loads during frequent start-stop operation, slope climbing and continuous excavation work. When the carrier support lugs develop fatigue cracks, sun gear tooth faces suffer pitting, spalling or internal connecting splines experience excessive wear, a series of typical faults will emerge: delayed travel reaction, obvious speed difference between left and right tracks, persistent metallic friction sound and excessive temperature rise of the travel motor. Such malfunctions interrupt construction schedules and bring unexpected economic losses to project contractors, equipment rental owners and maintenance teams.

Our assembly is fabried strictly following Sumitomo OEM drawing specifiions for gear tooth profile, spline fitting clearance and mounting hole layout. No on-site cutting, drilling or reaming modifiion is needed during gearbox overhaul, supporting direct plug-and-play installation and greatly shortening machine downtime. As a budget-friendly aftermarket alternative to high-priced genuine Sumitomo spare parts with long import lead times, this unit delivers reliable torque transmission performance at factory direct wholesale prices, perfectly matching the procurement demands of repair workshops, equipment leasing yards and cross-border construction machinery spare parts distributors.

1. 1:1 OEM precise dimensional repliion, exclusive fit for Sumitomo SH200 travel reducer, non-interchangeable with other models

   This planetary assembly is customized according to the internal cavity structure of SH200 travel gearbox and cannot be assembled on other Sumitomo models such as SH200A3 or SH240. Accurate reproduction of original spline fit tolerance and gear meshing gap avoids track deflection, walking jitter, abnormal internal grinding noise and premature wear of matched transmission components after installation, no extra auxiliary accessories required during fitting.

2. One-piece thick die forging forming, excellent shock and fatigue resistance for long-duration continuous construction

   Low-cost universal aftermarket planetary carriers often face fractured support lugs and collapsed gear teeth under all-day heavy excavation loads. Our integral thick forging process plus full-process constant-temperature heat treatment greatly improves impact resistance and fatigue life. It maintains stable torque transmission during uninterrupted earth digging and short-distance site transfer, effectively reducing the overhaul frequency of travel gearboxes for rental fleets and second-hand excavator operators.

3. Two independent closed-loop inspection processes to avoid economic losses caused by unplanned machine shutdown

   Each finished assembly undergoes two separate strict inspection workflows before factory delivery. Full-range dimension calibration verifies all matching tolerances of gear surfaces and inner splines; simulated gravel impact torque aging test replies harsh on-site working loads to verify long-term transmission stability. Unqualified semi-finished products are screened out in advance, helping repair shops and project contractors lower loss risks caused by sudden equipment halt.

4. Cost-effective aftermarket replacement for imported Sumitomo genuine spare parts to control annual maintenance expenditure

   Genuine Sumitomo planetary transmission spare parts carry high import tariffs and unstable supply cycles for SH200, a widely circulated crawler excavator in overseas construction markets. Our aftermarket assembly achieves equivalent load-bearing capacity and service life as OEM products at factory wholesale prices, greatly cutting annual equipment maintenance budgets for enterprises owning multiple SH200 machines.

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

   All in-stock goods can be arranged for shipment within 3 working days after payment confirmation. Air freight channels meet urgent emergency repair orders from remote mountain construction sites; consolidated bulk sea freight and full-container shipments provide economical bulk purchasing plans for distributors covering Southeast Asia, Africa, the Middle East and Central Asia.

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