EC300D Travel Gearbox 3rd Planetary Carrier Spider With Sun Gear Assy for

This third‑stage planetary carrier spider paired with sun gear assembly acts as the core intermediate power‑transfer unit housed within the travel reduction gearbox of EC300D crawler excavators. While the machine undertakes heavy‑load digging, site grading and cross‑terrain long‑distance travelling in quarry sites, large‑volume earth‑moving and infrastructure construction scenarios, this assembly continuously bears cyclic torque and frequent impact loads, delivering stable torque distribution for the whole final‑drive travel system.

Every production procedure strictly follows OEM dimensional benchmarks and tolerance specifiions. Gear tooth profiles, internal spline parameters and mounting positioning dimensions are fully compatible with cross‑reference part numbers VOE14599933 and VOE14599938. Direct on‑site installation is supported, no extra cutting, grinding or welding modifiion is needed. It effectively cuts down field repair workload and reduces costly machine downtime caused by long lead‑time for genuine OEM spare‑part supply.

1. Dual‑VOE‑PN Interchangeable Design, Specially Tuned for EC300D

   VOE14599933 and VOE14599938 feature matched fitting dimensions and can replace each other. This planetary carrier assembly is precisely engineered for the internal layout of EC300D travel reducer and cannot be reused for other excavator models. Accurate repliion of OEM geometric tolerances prevents fitting clearance deviation, irregular walking jitter and accelerated gear wear after replacement.

2. Integral Forged Structure for Continuous Heavy‑Duty Working Circumstances

   Ordinary low‑cost planetary carrier parts are prone to spider fracture and gear‑tooth breakage under long‑time operation on stony ground. Our component adopts one‑piece precision forging together with complete integral thermal treatment, greatly improving anti‑impact performance. It maintains stable service life under non‑stop heavy excavation and high‑frequency travelling operations.

3. Dual‑Stage Pre‑Shipment Quality Screening Eliminates On‑Site Malfunction Risks

   Each finished assembly undergoes two independent testing workflows prior to factory delivery. Full‑set dimension calibration verifies all mating tolerances; simulated travel fatigue test replies harsh quarry working conditions to validate transmission reliability. Defective workpieces are eliminated in advance to avoid unplanned equipment stand‑still losses for repair shops and mining operators.

4. Cost‑Effective Replacement Solution for Excavator Fleets & Maintenance Yards

   Genuine planetary drive spare parts come with high purchase cost and unstable supply cycles. This aftermarket assembly delivers comparable load‑bearing performance and service lifespan matching OEM parts at factory‑direct price levels, helping machinery‑leasing firms and maintenance workshops lower recurring repair costs for EC300D equipment fleets.

5. Flexible Global Shipping Options for Overseas Buyers

   All in‑stock goods can be dispatched within 3 working days upon payment confirmation. Air freight serves urgent breakdown orders from remote construction zones. Consolidated sea cargo and full‑container shipments provide cost‑efficient bulk purchasing solutions for spare‑parts distributors covering Africa, Southeast Asia, Middle East and Latin America markets.

Our factory owns more than 10 years of specialized R&D and mass‑production experience focusing on excavator final‑drive planetary components. Travel gearbox spare parts constitute our mature flagship product series. We operate a full closed‑loop production chain covering alloy steel forging, high‑precision gear processing, integral heat treatment and finished‑product load‑simulation evaluation. Dedied heavy‑load test benches simulate rigorous quarry and foundation‑construction working conditions to continuously upgrade component shock‑resistance and long‑term durability. Our planetary gear assemblies are exported to dozens of countries year‑round, building stable long‑term cooperative relationships and earning consistent positive feedback from global heavy‑machinery spare‑parts dealers.