Hitachi EX200-5 Travel Gearbox 3rd Planetary Carrier Spider With Sun Gear Assy

This fully‑integrated third‑stage planetary spider and sun gear assembly is a core transmission component housed inside the travel reduction final drive, engineered for Hitachi EX200‑5 medium crawler excavator. Repetitive digging, site migration and driving over rugged ground subject this unit to sustained torque fluctuation and periodic impact loads. Damaged 3rd‑stage planetary parts will trigger symptoms including sluggish travel speed, one‑sided track weakness, persistent gear rattling noise and excessive final drive temperature rise.

All gear tooth profiles, internal spline parameters and mounting hole dimensions strictly match the original Hitachi drawing standards. The three cross‑reference part numbers 1019147, 3063957 and 3063959 are fully interchangeable for overhaul work. Direct drop‑in installation is achievable without extra machining work. It effectively reduces machine idle time for maintenance teams, especially when original OEM stock is hard to source for this widely‑used classic excavator model.

1. Multi‑PN Compatible Assembly Custom‑matched for Hitachi EX200‑5 Final Drive System

   Part numbers 1019147, 3063957 and 3063959 can replace each other during travel reducer rebuilding. This carrier‑sun gear assembly is purpose‑made for the internal structure of EX200‑5 travel gearbox and cannot adapt to other Hitachi excavator variants. Strict dimensional replication maintains ideal gear meshing clearance, preventing track deviation, jerky travelling, harsh internal grinding sound and accelerated part wear after installation.

2. Robust Forged Construction Delivers Reliable Performance Under Variable Working Loads

   Many low‑cost alternative planetary carriers suffer spider cracking or sun gear tooth chipping under long‑term cyclic construction loads. Our one‑piece forging craft together with full‑set thermal treatment greatly enhances anti‑impact capacity. It delivers stable running performance under continuous digging operation and frequent site transfer for medium‑duty projects.

3. Two‑stage Pre‑delivery Quality Audit Minimizes Unexpected Field Breakdown Risks

   Each finished assembly goes through two independent inspection procedures before leaving factory. Comprehensive dimension calibration verifies all mating tolerances. Simulated real‑site heavy‑load test reproduces actual working stress to validate transmission stability. Potential defective units are filtered internally, helping repair workshops and equipment owners avoid unplanned machine downtime losses.

4. Economical Rebuild Option for Equipment Fleets & After‑sales Service Workshops

   Genuine Hitachi planetary spare parts carry high purchase cost and unstable supply lead time for this older popular excavator model. This aftermarket assembly achieves load‑bearing performance and service life close to OEM level at factory‑direct price, cutting recurring maintenance expenditure for operators managing multiple EX200‑5 units.

5. Flexible Multimodal Shipping Solutions for Global Machinery Spare‑part Distributors

   Stock‑available items can be dispatched within 3 working days once payment is confirmed. Air shipping supports urgent breakdown orders for remote job sites. Consolidated sea cargo and full‑container transport provide cost‑efficient bulk purchasing solutions for distributors covering Africa, Southeast Asia, Middle East and Latin America markets.

Our facility possesses more than 10 years of accumulated experience in R&D and mass production of excavator final‑drive planetary components. Travel gearbox planetary assemblies rank among our core product lines. Our closed‑loop production workflow covers alloy steel forging, high‑precision gear machining, professional heat treatment and finished‑product load simulation assessment. Dedicated heavy‑load test benches simulate severe quarry and construction‑site operating conditions to continuously improve component shock resistance and long‑term service lifespan. Our planetary spare parts are exported to dozens of countries, building steady long‑term cooperative ties with heavy‑equipment spare‑part dealers across the globe.