Eickhoff SL750/SL900/SL1000 Shearer Idler Gear | Transmission Intermediate Gear

Description

Eickhoff SL750 SL900 SL1000 Shearer Idler Gear Product Overview
This product is specifically designed for the transmission systems of Eickhoff SL750, SL900, and SL1000 series coal mining machines. It is an idler gear, also known as an intermediate gear or bridge gear. In a multi-stage gear transmission chain, it does not change the transmission ratio, but plays a crucial role in transmitting power, connecting the driving and driven gears, adjusting the center distance, or changing the direction of the output shaft. Because it typically meshes with two gears simultaneously and bears combined stress, it requires extremely high material strength, tooth surface hardness, and manufacturing precision.

Technical Specifications and Features

Precision Design and Manufacturing: Designed strictly according to the original manufacturer’s gear parameters (module, number of teeth, pressure angle, helix angle). Utilizing high-grade alloy carburized steel (such as 18CrNiMo7-6), the gears are CNC-machined by shaping/hobbing, followed by deep carburizing, quenching, and precision grinding to ensure a tooth surface hardness of HRC 58-62, while maintaining core toughness. The precision grade meets or exceeds national standard level 6 (GB/T 10095).

Strict Quality Control: Each idler gear undergoes 3D dimensional inspection, tooth profile and direction inspection, surface hardness and hardened layer depth inspection, and magnetic particle testing before leaving the factory to eliminate internal defects and premature failure.

Superior Performance:

Smooth Transmission: High-precision gears effectively reduce meshing impact and vibration.

Wear-Resistant and Durable: The hardened tooth surface significantly enhances resistance to pitting and wear.

Low-Noise Operation: Precise tooth profiles significantly reduce transmission noise, improving the underground working environment.

Applications and Fault Diagnosis

Installation Location: Typically located in the cutting section gearbox or traction section transmission box of a coal mining machine.

Common Failure Modes:

**Pitting and Spalling:** Contact fatigue causes pitting or flaking on the tooth surface.

**Gear Wear:** Poor lubrication or foreign object intrusion leads to tooth thinning.

**Tooth Breakage:** Caused by overload impact, improper installation, or material defects.

**Replacement Signs:** Regular knocking noises or increased vibration in the gearbox; oil analysis reveals metal particles of specific sizes; or the equipment experiences a decrease in transmission efficiency.

**Service and Support:** We not only provide standard idler gears but also support custom orders based on provided drawings (physical or printed). Please provide your equipment model, gear part number, or clear photos of the gear and key dimensions. We will perform accurate measurements and production for you. For commonly used models, we maintain safety stock to ensure fast delivery.