Hyundai R305LC-7 R305 Travel Gearbox 2nd Planetary Carrier Spider With Sun Gear Assy for Excavator Parts XJCK-00131 XJCK-00130 XJCK-00079

This first-stage planetary spider carrier paired with sun gear acts as the core power splitting assembly housed inside the final travel reduction unit of Hyundai R305 crawler excavators. When the machine operates under sustained heavy workloads such as quarry excavation, land development and infrastructure building, this assembly bears continuous torque impact and alternating load, maintaining steady crawler power output.

All production standards strictly match Hyundai OEM dimensional benchmarks. Gear profiles, spline specifications and installation datum dimensions fully comply with the three interchangeable part numbers XJCK-00131, XJCK-00130, XJCK-00079. Direct bolt-on installation is available without secondary machining. It effectively cuts down field repair hours and minimizes construction downtime brought by long waiting cycles for genuine original spare parts.

1. Interchangeable Multi PN Design, Precise Match for Hyundai R305

   XJCK-00131, XJCK-00130 and XJCK-00079 share unified assembly dimensions and can replace each other. This assembly is exclusively developed for the R305 R305-7 travel gearbox structure and cannot be fitted to other Hyundai excavator models. Strict copying of OEM geometry avoids assembly clearance errors, abnormal walking vibration and accelerated gear abrasion after replacement.

2. Forged Integrated Structure Adapted to Long-Term Rough Site Operation

   Generic planetary carrier parts easily suffer spider fracture and gear tooth breakage under continuous operation on stony terrain. Our product adopts one-piece forging technology plus integral heat treatment, greatly improving shock resistance. It maintains stable service life under round-the-clock heavy excavation and frequent travelling conditions.

3. Multi-Stage Offline Inspection Avoids On-Site Malfunctions

   Each finished set undergoes two independent testing procedures before leaving the factory. Full dimension calibration verifies all fitting tolerances; simulated long-distance walking fatigue testing simulates quarry working conditions to check transmission stability. Defective products are eliminated in advance to prevent sudden machine stop losses for repair yards and mining operators.

4. Significant Cost Advantage for Excavator Fleets & Repair Shops

   Genuine Hyundai planetary drive components carry high purchase costs and unstable supply cycles. Our aftermarket assembly achieves equivalent bearing capacity and service cycle at factory direct price, helping machinery leasing companies and repair shops effectively control recurring maintenance expenditure for R305 equipment.

5. Diversified Global Shipping Options for Worldwide Clients

   All in-stock items can be dispatched within 3 working days once payment is confirmed. Air freight solutions handle emergency breakdown orders at remote construction sites. Consolidated sea freight and full-container transport provide economical bulk delivery plans for spare parts distributors covering Africa, Southeast Asia, the Middle East and Latin America.

Our factory owns over a decade of focused R&D and batch production experience on excavator final drive planetary components. Travel gearbox spare parts are our mature core product line. We run a closed-loop production workflow covering alloy steel forging, precision gear machining, integral thermal treatment and finished product load simulation testing. Heavy-load test benches replicate severe quarry and foundation construction environments to continuously upgrade component anti-shock performance and long-term durability. Our planetary gear spare parts are exported to dozens of countries all year round, securing stable long-term cooperation and consistent positive feedback from global heavy machinery spare parts dealers.