Sumtiomo SH200 Travel Gearbox 3rd Planetary Carrier Spider With Sun Gear Assy for Excavator Parts

This integrated tertiary planetary carrier spider and matched sun gear set serves as the low-speed heavy-load reduction core within the Sumitomo SH200 travel final drive assembly, purpose-built for SH200 crawler excavators widely deployed for land development, road maintenance, quarry operation and river sediment clearance across emerging construction markets in Southeast Asia, Africa and the Middle East.

Installed on the last reduction stage of the travel gearbox, this 3rd planetary group bears the peak torque load when the machine crawls on uneven ground, negotiates steep slopes and maintains sustained digging cycles. Once the carrier lugs develop fatigue cracks, sun gear tooth surfaces suffer pitting/spalling or internal splines experience excessive wear, typical malfunctions will emerge: slow and unresponsive travel, inconsistent track speed on left and right sides, persistent metal grinding noise and abnormal heat buildup of the travel motor. These defects disrupt on-site construction schedules and create unexpected revenue losses for equipment owners, rental firms and project contractors.

Our assembly is manufactured in strict accordance with Sumitomo OEM dimensional standards for gear tooth profile, spline clearance and mounting hole positioning. No cutting, drilling or reaming modifiion is required during gearbox overhaul, enabling direct installation and drastically shortening machine downtime. As a cost-effective aftermarket alternative to costly genuine Sumitomo spare parts with lengthy import lead times, this assembly delivers reliable torque transmission performance at factory wholesale rates, ideal for independent repair shops, equipment rental yards and cross-border construction machinery spare parts distributors.

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

   This planetary assembly is customized based on the internal cavity structure of SH200 travel gearbox and cannot be fitted for other Sumitomo models such as SH200A3 or SH240. Precise recreation of original spline fit tolerance and gear meshing clearance prevents track deviation, walking jitter, abnormal internal gear noise and accelerated wear of matched transmission components after installation, no extra auxiliary fittings needed during assembly.

2. Integral thick forging structure, superior impact and fatigue resistance for round-the-clock heavy construction

   Generic low-cost aftermarket planetary carriers often suffer fractured support lugs and collapsed gear teeth under long-duration heavy digging loads. Our one-piece thick forging combined with full-process constant-temperature heat treatment greatly improves impact resistance and fatigue life. It maintains stable torque transmission during continuous earth excavation and short-distance site transfer, effectively reducing the overhaul frequency of travel gearboxes for rental fleets and second-hand excavator operators.

3. Dual independent closed-loop inspection procedures to avoid economic losses caused by sudden equipment shutdown

   Each finished assembly undergoes two separate strict inspection workflows before leaving the factory. Full-scale dimension calibration verifies all matching tolerances of gear surfaces and inner splines; simulated gravel impact torque aging test reproduces harsh field working conditions to validate long-term transmission stability. Defective semi-finished products are eliminated in advance, helping repair workshops and project contractors reduce loss risks from unexpected machine halt.

4. Affordable aftermarket substitute for imported Sumitomo OEM spare parts to control annual maintenance budgets

   Genuine Sumitomo planetary transmission spare parts carry high import tariffs and unstable supply cycles for the widely circulated SH200 excavator in overseas construction markets. Our aftermarket assembly achieves equivalent load capacity and service life as OEM components at factory wholesale prices, significantly cutting annual equipment maintenance costs for businesses operating multiple SH200 units.

5. Diversified global logistics solutions tailored for international construction machinery spare parts wholesalers

   All stocked products can be arranged for shipment within 3 working days once payment is confirmed. Air freight serves urgent emergency repair orders for remote mountain construction sites; consolidated sea freight and full-container shipments offer economical bulk purchasing plans for distributors covering Southeast Asia, Africa, the Middle East and Central Asia.

Our manufacturing factory possesses over 15 years of professional R&D and mass production experience for Japanese excavator travel motor planetary spare parts, with Sumitomo SH series planetary carrier assemblies as our flagship product line. We maintain a complete closed-loop production chain covering alloy steel die forging, 5-axis high-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 environments 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, forming long-term stable strategic cooperative relationships with global heavy machinery spare parts wholesalers.

Q1: Can this 3rd stage planetary carrier assembly fit other Sumitomo excavator models besides SH200?

A1: Cross-model compatibility is not supported. Different Sumitomo excavator series adopt final drive assemblies with exclusive structural dimensions and spline parameters that cannot be interchanged. Please verify your exact machine model before placing orders.

Q2: What travel gearbox faults can this assembly resolve?

A2: It fixes machine failures triggered by cracked carrier support lugs, heavily worn or broken sun gear teeth, offset wobbling tracks, persistent harsh internal gear grinding noise and insufficient travel power under heavy-load uphill excavation.

Q3: Are tiered bulk discount policies available for large wholesale orders?

A3: Yes, we provide differentiated preferential pricing based on purchase quantity. We can arrange full-container sea transport to lower overall international logistics cost for large-batch procurement.

Q4: What anti-rust and shockproof packaging is used for long-distance ocean transportation?

A4: All metal surfaces are evenly coated with high-viscosity heavy-duty anti-rust grease. The whole assembly is wrapped with multi-layer thick waterproof and shockproof PE film, then sealed in reinforced export plywood crates to avoid surface scratches, collision deformation and moisture corrosion during long overseas sea transit.