Spiral Bevel Gears | Ground & Lapped Bevel Gears

Kean’s Experience in Spiral Bevel Gears

Products for aerospace applications demand rigorous adherence to drawing specifications, with every parameter undergoing full inspection. Designed for extreme environments, these gears must adapt to significant temperature differences, achieve very high transmission speeds, possess exceptional load-bearing capacity, offer extended service life, and ensure superior transmission stability. Typically, dynamic balancing or surface coating is required before the final product stage, reflecting the very high overall machining difficulty.

Materials & heat treatment: Commonly utilize special materials such as 9310 and 18Cr2Ni4WA. Diverse heat treatment methods are employed, including carburizing and quenching, carbonitriding, or nitriding.

Used in ore crushing and similar heavy-duty applications, these gears are characterized by their large load-bearing capacity and substantial size. They typically operate at low speeds, with less stringent requirements for rotational noise.

Materials & heat treatment: Large gears commonly use medium carbon steel (40Cr, 42CrMo, etc.), with heat treatment involving quenching and tempering followed by hardening, achieving a tooth surface hardness of HRC55-60. Small gears typically use low carbon steel (20CrMnTi, 20CrMnMo, etc.), with heat treatment involving carburizing and quenching. The carburized layer is generally deep, around 4mm, and the tooth surface hardness is HRC58-62.

These gears are integral to the front and rear axles of mining vehicles. They are designed for strong load-bearing capacity and high torque transfer, resulting in a robust, solid construction. Smooth operation is crucial, which often necessitates the use of gear grinding processes.

Materials & heat treatment: Both large and small gears commonly use Ni-containing materials like 20Cr2Ni4A or 18CrNiMo7-6, offering enhanced toughness and machinability. Heat treatment involves carburizing and quenching, with a typical carburized layer depth of 2.5mm and a tooth surface hardness of HRC58-62.

These gears are used in the transmission systems of high-speed wire rod rolling mills. They demand high transmission efficiency, smooth operation, and strong load-bearing capacity, typically produced using gear grinding processes.

Materials & heat treatment: Both large and small gears commonly use Ni-containing materials like 20Cr2Ni4A or 18CrNiMo7-6, providing superior toughness and machinability. Heat treatment involves carburizing and quenching, with a typical carburized layer depth of around 2mm and a tooth surface hardness of HRC58-62.

Used in gearbox systems for marine thrusters, these gears operate in aquatic environments, requiring excellent corrosion resistance, smooth transmission, and low noise. Therefore, gear grinding processes are always employed for these products.

Materials & heat treatment: Both large and small gears use marine-certified materials such as 18CrNiMo7-6 and 17CrNiMo6. Heat treatment involves carburizing and quenching, with a carburized layer depth typically around 1.5mm depending on the module size, and a tooth surface hardness of HRC58-62.

Applied in high-speed machine tool milling heads, these gears operate at very high speeds, necessitating minimal noise. This makes their manufacturing highly challenging. Products must undergo gear grinding and tooth crowning/profiling to ensure exceptional precision and tooth surface finish.

Materials & heat treatment: Both large and small gears use marine-certified materials like 20CrMnTi and 20CrMnMo. Heat treatment involves carburizing and quenching, with a carburized layer depth typically around 1.5mm depending on the module size, and a tooth surface hardness of HRC58-62.

Differential Components (for Armored Vehicles)

The differential for armored vehicles is a core component of the entire vehicle transmission system. It adjusts the speed difference between the left and right wheels via a planetary gear set, ensuring smooth turning. Its structure includes a planetary carrier, planetary gears, and axle shafts. During straight driving, power is distributed equally, while during turns, the gears rotate on their own axes to adjust the speed difference between inner and outer wheels. The operating environment is harsh, demanding high product performance. Thus, the gear grinding process is essential.

Materials & heat treatment: Both large and small gears typically use 20Cr2Ni4A, a material known for its high performance requirements, superior toughness, and excellent machinability. Heat treatment involves carburizing and quenching, with a typical carburized layer depth of around 2mm and a tooth surface hardness of HRC58-62.