Hyundai R210 Swing Gearbox 1St Planetary Carrier Spider With Sun Gear Assy For Excavator XKAQ-00010 XKAQ-00025 XKAQ-00015

This 1st‑stage planetary carrier spider combined with 1st sun gear assembly is the primary power input unit within the swing reduction gearbox for Hyundai R210 excavator. Receiving rotational power directly delivered from the swing motor, this assembly executes the initial speed reduction and torque multiplication to drive upper‑structure slewing movement. Working under cyclic shock load, frequent forward‑reverse rotation and contaminated lubrication conditions, spline wear, sun‑gear tooth pitting and carrier deformation are common failures. Once damaged, the machine will exhibit symptoms including swing loss of power under digging load, intermittent rotary hesitation, harsh metallic grinding noise inside the slew gearbox and occasional rotation lock‑up. This aftermarket component is manufactured referencing original sample specifications, enabling direct replacement to restore reliable swing function for your excavator.

1. Balanced toughness and surface hardness: High‑grade alloy steel is adopted as base material. Through professional carburizing quenching treatment, gear tooth and spline surface gain excellent wear resistance, meanwhile the carrier spider core retains sufficient toughness to resist impact cracking caused by sudden load changes on construction sites.
2. Accurate gear‑matching performance: Sun gear teeth and internal splines are finely ground to achieve tight and smooth meshing with mating planetary gears. It effectively lowers heat generation and abrasive particle production inside the gearbox, protecting follow‑up planetary components and ring gear from secondary wear damage.
3. Comprehensive dimensional verification: Every finished assembly undergoes piece‑by‑item inspection for mounting hole spacing, spline dimension, tooth profile and assembly clearance. It ensures seamless fitting with original swing gearbox housing, helping maintenance personnel complete onsite repair rapidly and minimize equipment downtime.
4. Practical cost‑optimized solution: Rather than investing in a complete brand‑new swing reducer, replacing this first‑stage planetary & sun gear assembly solves most input‑end transmission faults. It brings obvious cost savings for repair workshops and end equipment owners without compromising working performance.

We specialize in the production of slew and travel gearbox planetary spare parts for various excavator brands. Each production batch carries out raw material composition check, hardness testing and gear meshing test before shipment. Finished goods are coated with anti‑rust oil and wrapped with shock‑resistant packing materials to prevent scratches and oxidation during long‑haul sea transportation. We support bulk wholesale for overseas distributors, local repair shops and trading companies, small trial orders are acceptable.

Q1: How do I confirm whether this 1st planetary assembly needs to be replaced? A: When your Hyundai R210 excavator suffers insufficient swing torque under load, persistent grinding noise inside swing gearbox, rotation jam, or metallic impurities found in swing gearbox oil during maintenance, you need to disassemble and inspect the first‑stage planetary set.

Q2: Can this assembly fit other Hyundai excavator models? A: This assembly is specially engineered for Hyundai R210. Please cross‑check your old part numbers XKAQ‑00010 / XKAQ‑00025 / XKAQ‑00015 before order placement. Do not install on non‑matching machine models.

Q3: What precautions should be taken during installation? A: Completely clear all metal wear debris inside swing gearbox cavity. It is recommended to update relevant bearings and oil seals simultaneously. After assembly, fill with qualified swing gear oil and carry out no‑load rotation test before putting the excavator into heavy‑load operation.

Q4: About product warranty terms? A: The warranty covers manufacturing defects. Damage resulting from improper installation, insufficient lubrication and overload operation is not included within warranty coverage. Please follow official maintenance standards of Hyundai excavator.