Excavator Slew Reduction Gear | Heavy Duty Large Ring Gear for Swing Machinery
Product Description
Restore the precise movement of your heavy equipment with Yile Machinery’s Excavator Slew Reduction Gears. Also known as the Swing Reduction Gear or Large Ring Gear, this component is the heart of the excavator's swing circle system, converting hydraulic power into the rotating force needed to turn the upper structure.
We specialize in manufacturing affordable, high-quality replacement gears that match OEM specifications for major excavator brands (such as Komatsu, CAT, Hitachi, Volvo, and Hyundai). Whether you need a Sun Gear, Planetary Gear, or the main Large Ring Gear, our forged steel components are built to withstand the extreme torque and shock loads of mining and construction environments.
Key Features & Durability
High-Strength Forging: Manufactured from premium alloy steel (e.g., 20CrMnTi, 42CrMo) using advanced forging techniques. This ensures superior density and resistance to tooth breakage compared to standard cast gears.
Precision Tooth Profile: Our gears undergo CNC hobbing and grinding to achieve precise tooth geometry. This ensures smooth meshing with the swing motor pinion, reducing noise and preventing premature wear.
Hardened for Longevity:
Carburizing & Quenching: Deep case hardening (HRC 58-62) provides a wear-resistant surface.
Core Toughness: The core remains ductile to absorb heavy impact loads during operation.
Perfect Fit Compatibility: Engineered to precise dimensions to serve as a direct replacement for worn-out Slew Drive internals.
Technical Specifications
Specification | Details |
Product Name | Excavator Slew Reduction Gear / Large Gear Wheel / Swing Circle Gear |
Material | Forged Alloy Steel: 20CrMnTi, 20CrMo, 42CrMo |
Hardness | Surface: HRC 58-62 |
Machining Process | Forging -> Normalizing -> Hobbing -> Carburizing/Quenching -> Grinding |
Part Type | Planetary Reduction Gear Parts (Sun Gear, Planet Gear, Ring Gear) |
Application | Excavator Swing Device / Slew Motor Reduction Box |
Compatible Brands | Fits Bucyrus,Liebherr,ЭКГ,ЭШ |
Applications
This gear is a critical replacement part for the Swing Reduction Gearbox found in:
Hydraulic Excavators: From mini-excavators to large mining shovels.
Crawler Cranes: Slew drive mechanisms.
Concrete Pumps & Drilling Rigs: Rotary drive systems.
Why Choose Yile Machinery for Aftermarket Parts?
Cost-Effective: Get OEM-level quality at a fraction of the dealer price.
Custom Manufacturing: We can manufacture gears based on your sample or technical drawing if the part number is obsolete.
Fast Production: Efficient manufacturing cycles to minimize your machine downtime.
Get a Quote for Excavator Gears – Send us your part number or dimensions for a quick price check.