Sumtiomo SH200A3 Travel Gearbox 1st Planetary Carrier Spider With Sun Gear Assy

This integrated primary planetary carrier and sun gear assembly is the initial torque input core of Sumitomo SH200A3 three-stage travel reduction final drive, exclusively matched for Sumitomo SH200A3 medium crawler excavators. This classic Japanese digger is widely applied in urban earthmoving, road construction, gravel quarrying and river dredging projects across Southeast Asia, Africa and Middle East construction markets.

Loed right at the hydraulic motor inlet of the reduction system, the 1st planetary assembly bears all instantaneous impact torque generated during startup, sharp steering and uphill travel. Once the carrier’s three supporting lugs crack, sun gear tooth surfaces develop spalling pitting or inner connecting splines suffer severe wear, the excavator will display lagging walking response, obvious speed deviation between left and right tracks, continuous shrill metal friction noise and abnormal overheating of the travel motor, which directly halts construction progress and brings economic losses to contractors.

Our assembly strictly follows Sumitomo OEM drawing standards for gear tooth curve, spline fit clearance and mounting hole layout. No on-site cutting, drilling or reaming modifiion is required during overhaul, supporting fast plug-and-play replacement and cutting equipment downtime effectively. Compared with costly original Sumitomo spare parts with long import lead times, this aftermarket unit delivers matching transmission durability at factory direct wholesale prices, perfectly suited for repair workshops, equipment leasing yards and cross-border construction machinery spare parts distributors.

1. 1:1 OEM precise dimensional repliion, exclusive fit for Sumitomo SH200A3 travel reducer without cross-model compatibility

   This planetary assembly is tailor-made according to the internal cavity structure of SH200A3 travel gearbox, and cannot be assembled on other Sumitomo models such as SH120A3 or SH240A3. Accurate reproduction of original spline fit clearance and gear meshing gap avoids track deflection, unstable jitter during movement, abnormal internal grinding noise and premature abrasion of matched transmission components after installation, no extra auxiliary accessories needed for installation.

2. One-piece thick die forging molding, outstanding shock and fatigue resistance for long-hour continuous construction work

   Low-cost generic aftermarket planetary carriers often suffer broken support lugs and collapsed gear teeth under all-day heavy excavation loads. Our integral thick die forging craft plus full-process constant-temperature heat treatment greatly upgrades anti-impact and anti-fatigue performance. It maintains stable torque transmission during uninterrupted earth digging and short-distance site transfer, effectively lowering the overhaul frequency of travel gearboxes for rental fleets and second-hand excavator operators.

3. Two independent closed-loop inspection workflows to eliminate financial losses caused by unplanned machine downtime

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

4. Economical aftermarket substitute 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 SH200A3, a widely circulated medium excavator in overseas construction markets. Our aftermarket assembly achieves identical load-bearing capacity and service lifespan as OEM products at factory wholesale prices, greatly reducing the annual equipment maintenance budget for enterprises with multiple SH200A3 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 er to urgent emergency repair orders from remote mountain construction sites; consolidated bulk sea freight and full-container shipments provide cost-saving bulk purchasing plans for distributors covering Southeast Asia, Africa, the Middle East and Central Asia.

Our manufacturing plant owns over 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 operate a complete closed-loop production chain covering 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 working conditions to continuously optimize product shock resistance and extend service cycles. Our planetary gear spare parts are exported to more than 50 countries and regions worldwide, establishing long-term stable strategic cooperative partnerships with global heavy machinery spare parts wholesalers.

Q1: Can this first-stage planetary carrier assembly fit other Sumitomo excavator models besides SH200A3?
A1: Cross-model matching is not supported. Different Sumitomo excavator series adopt final drive assemblies with exclusive non-interchangeable structural dimensions and spline parameters. Please double-check your exact machine model before submitting orders.

Q2: What travel gearbox malfunctions can this assembly resolve?
A2: It eliminates equipment failures induced by cracked carrier support lugs, severely worn or fractured sun gear teeth, offset wobbling tracks, continuous harsh internal gear grinding noise and insufficient walking driving power output during heavy-load uphill excavation.

Q3: Are tiered volume discount policies available for large bulk wholesale orders?
A3: Yes, we provide differentiated preferential prices based on order quantity. We can coordinate full-container sea transportation to reduce overall international logistics expenditure for large-batch procurement.

Q4: What anti-rust and shockproof packaging is adopted 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 inside reinforced export plywood crates to prevent surface scratches, collision deformation and damp corrosion during prolonged overseas sea transit.