42CrMo Gear Shaft Customer Industrial Gear Shaft For Rotating Part

42CrMo Gear Shaft Customer Industrial Gear Shaft For Rotating Part

Gear shaft refers to a mechanical part that supports a rotating part and rotates with it to transmit motion, torque, or bending moment.
The gear shaft is mainly subjected to alternating loads, impact loads, large shear stress, and contact stress. The shaft is prone to cracks and the teeth are prone to wear. Therefore, the core of the gear shaft is required to have a certain strength and toughness, a high fatigue limit, and the ability to resist multiple impacts. The surface should also have a certain hardness and wear resistance.

Classification of gear shafts:

According to the different shapes of the axis, the shaft can be divided into two categories: crankshaft and straight shaft.

According to the load-bearing conditions of the shaft, it can be divided into:
① Rotating shaft: It bears both bending moment and torque during operation. It is the most common shaft in machinery, such as the shafts in various reducers.
② Spindle: It is used to support rotating parts and only bears bending moment without transmitting torque. Some spindles rotate, such as the shafts of railway vehicles, and some spindles do not rotate, such as the shafts supporting pulleys.
③ Transmission shaft: It is mainly used to transmit torque without bearing bending moment, such as the long optical shaft in the crane moving mechanism and the drive shaft of the car.

42CrMo:
1. 42CrMo steel is an ultra-high-strength steel with high strength and toughness, good hardenability, no obvious temper brittleness, high fatigue limit and multiple impact resistance after quenching and tempering, and good low-temperature impact toughness.
2. 42CrMo is an alloy steel used for shafts and structural parts under harsh conditions.
3. 42CrMo is a medium carbon alloy steel. The preliminary heat treatment is normalizing. The main purpose is to obtain a certain hardness and optimize the internal structure to facilitate the cutting of the steel billet and prepare the organization for quenching and tempering.

Gear shaft processing technology:
1. Blank cutting
2. Rough turning
3. Tempering treatment (improve the toughness of the gear shaft and the rigidity of the shaft)
4. Finish turning the gear blank to size
5. If there is a keyway on the shaft, the keyway can be processed first
6. Gear hobbing
7. Medium frequency quenching of the tooth surface (high frequency quenching for small gears), quenching hardness HRC48-58 (the specific hardness value needs to be determined according to working conditions, load and other factors)
8. Gear grinding
9. Final inspection of the finished product.

Gear shaft

DINGSCO- A leading provider of premium quality gear products and services based in China.
1. We are committed to delivering innovative, high-performance solutions that meet the evolving needs of our customers across a wide range of industries.
2. We boast a strong R&D capability and an impressive collection of state-of-the-art equipment, including multiple seven-axis five-link CNC spiral bevel gear grinding machines, CNC gear hobbing machines, and gear milling machines. We closely collaborate with the gear research center at Zhongnan University of Economics and Law, and rely on the latest technological achievements in machining, heat treatment, and testing to deliver top-notch gear products and services to our clients.
3. At DINGSCO, we take pride in our capacity to develop and manufacture gears that are tailored to meet specific customer requirements. Our gear solutions include high gear ratios, quasi-hyperboloid gears, high-speed gears, heavy-duty gears, low-noise gears, and gear systems with a small number of teeth. We cater to a broad range of industries, including robotic automation, CNC machining, industrial sewing, gear reduction, bicycles, power tools, and model airplanes, among others.

Our company was formerly known as Changsha Double Star Gear Industrial Co., Ltd, which was established in 1994. It is a directly affiliated university-run enterprise founded by Central South University Professor Zeng Tao, the leading expert on spiral bevel gears in China. It was later renamed as Changsha Senjie Gear Co., Ltd (abbreviated as "CSG") in 2016. CSG is a production R&D base specializing in professional design, reserch, manufacture and sales of high-quality small module spiral bevel gears and high reduction hypoid gears and cylindrical gears. In 2023, Hunan Dinghan New Material Technology Co., Ltd. was established as a specialized international export business department. CSG has strong scientific research and development capabilities and is also equipped a full set of advanced equipment including seven-axis five-linkage CNC spiral bevel gear grinding machines and gear milling machines. By making the best use of the scientific and technological achievements and equipment of the Gear Research Institute of Central South University, machanical processing, heat treatment and testing. We have developed high-quality products featuring high reduction, high speed, heavy load, low noise and less teeth for users.

With the quality policy of "scientific and technological innovation, quality first, being first-class firm and customer‘s satisfaction", we have won the trust of well-known domestic and abroad enterprises with stable and excellent quality. It is committed to be a pioneer of the industry of China's small-module spiral bevel gears, and is dedicated to providing service for any related industry requiring industrial robots, CNC turning and milling compound power tool turrets, industrial sewing machines, reducers, bicycles, power tools and aeromodelling. We sincerely look forward to your cooperation!