EC360 Swing Gearbox 1St Planetary Carrier Spider With Sun Gear Assy For

EC360 Swing Gearbox 1St Planetary Carrier Spider With Sun Gear Assy For Excavator Parts VOE14596629 VOE14613361

Product Overview

This first‑stage planetary carrier spider together with matched sun gear is a critical power transfer component fitted inside EC360 excavator swing reduction gearbox. Located at the input end of the slewing reducer, it directly receives power torque transmitted from swing motor, and cooperates with subsequent planetary groups to achieve speed reduction, delivering powerful rotary torque for upper‑structure rotation. Under continuous tough site conditions such as quarry excavation, heavy material loading‑unloading, site demolition and frequent positive‑reverse swing operations, the first‑stage planetary set bears the largest instantaneous impact torque. Common failures contain gear tooth spalling, sun‑gear spline wear, carrier deformation, fatigue crack and persistent abnormal grinding noise. This complete pre‑assembled aftermarket assembly can directly replace failed original parts, restore responsive swing action and resolve faults like swing weakness, rotation lag and slewing jitter. Cross‑reference OEM numbers are VOE14596629, VOE14613361. All mounting hole sizes, spline specifications and gear modulus are strictly produced in accordance with original gearbox internal standards for perfect fitting.

Technical Specification

Product Highlights

1. High‑strength integral forging structure: The first‑stage planetary carrier spider adopts one‑piece forging blank. As it undertakes peak impact torque from swing motor, integral forging greatly improves anti‑fatigue performance, effectively preventing carrier cracking and hole position deformation caused by frequent sudden start‑stop swing.
2. Precision machined sun gear: The mating sun gear goes through carburizing quenching and fine grinding process. Tooth surface smoothness is well controlled to maintain stable meshing clearance with planetary gears and inner ring gear. It lowers meshing impact noise, reduces metal abrasive wear and extends overall service cycle of swing gear assembly.
3. Pre‑integrated assembly for fast overhaul: The whole planetary carrier and sun gear set is finished assembled before delivery. Maintenance technicians do not need to match and assemble discrete gears on‑site, which largely shortens gearbox repair time, reduces machine downtime loss for repair shops and construction fleets.
4. Reliable interchangeability for aftermarket business: Every key dimension strictly follows OEM drawing requirement. No cutting, grinding or other secondary modification needed during installation. It is an ideal cost‑saving spare part stocking selection for global spare‑parts distributors, independent service workshops and large engineering project teams.

Manufacturing & Quality Control

Our production plant owns complete manufacturing links including forging, CNC precise machining, heat treatment and gear grinding. Each batch of alloy steel raw material will implement incoming inspection for material composition and mechanical property. Critical parameters covering carrier hole spacing, sun‑gear tooth profile and spline dimension are inspected one by one for every finished product. Sampling torque impact simulation test is carried out to examine component load‑bearing capacity and meshing stability. Qualified assemblies are wrapped with anti‑rust protective film and packed with shock‑absorbing filler inside solid wooden case, avoiding collision bruise and rust damage during long‑distance sea and land transportation. Non‑qualified products will be fully eliminated before shipment.

FAQ

Q1: What fault signals remind us to replace this 1st‑stage planetary assembly? A: Harsh clattering noise occurs when excavator starts to swing, obvious swing power drop, jitter during rotation, iron powder or metallic fragments found in swing gear grease. In these cases you need to open gearbox housing and check the first‑stage planetary components.

Q2: Can this assembly fit other excavator models? A: This unit is mainly developed for EC360 swing gearbox. If you plan to use it for other equipment, please contrast your old part numbers and actual internal gearbox structure carefully to avoid wrong ordering.

Q3: What important points should be noticed during installation? A: Fully clean gearbox inner cavity and clear away all residual metal debris. Use qualified high‑temperature swing gear grease for filling after installation. Operate low‑speed no‑load swing run‑in firstly, do not run heavy‑load slewing work right after assembly completion.

Q4: About product warranty scope? A: We provide standard aftermarket warranty covering manufacturing defects. Damage caused by hard foreign objects entering gearbox, improper installation and long‑time overload operation is not within warranty coverage. Please operate and maintain according to swing reducer official requirements.

Q5: How about delivery arrangement? A: In‑stock goods can be shipped within 3‑7 working days. We support sea freight, air freight and express delivery, to meet different logistics demands of bulk orders and urgent orders from worldwide buyers.