Gear box gear related instructions

Gearbox gearIs an important transmission component in gearbox equipment,gearIt is used to transmit force and torque to realize the output of a self-determined action or required speed. The gear transmission needs to be installed on the shaft, and the bearing is a component that provides support for the shaft. The support of the bearing is more It is easy to make the shaft and the components on the shaft have a relatively accurate running precision, and the bearing can be replaced after damage, and the maintenance is convenient.

Reducer spiral bevel gear,helical gearAll are made of high-quality alloy steel for carburizing and quenching. The tooth surface hardness is as high as 60±2HRC, and the tooth surface grinding accuracy is as high as 5-6.

What material is the gear box gear, and what material is the best?

The materials used in the gearbox gears of different applications may be different, depending on the actual use strength and other requirements.Because this is related to the working environment, working load, use conditions, gear structure size, etc. of the product.

Example (for reference):

1. Like milling head gearbox gears, the general transmission power is more than ten KW. If the gear modulus is not less than 2, if helical gear transmission is adopted, 45# quenching and tempering treatment or 40Cr quenching and tempering treatment can be considered (higher strength than the former , The cost is also high).

2、釆煤机、连采机、掘进机、重型刮板输送机等减速箱齿轮常用渗碳淬火钢号为：20CrMnMo，17CrNiMo6，12Cr2Ni4，20C2Ni4，20CrMnti。其中以20Cr2Ni4和20CrMnMo两种钢号居多。

3. Commonly used steel grades for gearbox gears of mine hoisting winches, open-pit mining machinery, metallurgical mining machinery, etc. are: 40Cr, 35CrMo, 42CrMo, 40CrMnMo, 40CrNi and other quenched and tempered steels and surface hardened steels.

4. Nitrided steel is generally used for closed gearbox gears that transmit medium power and have certain impact load conditions.The specific hardness requirements of nitrided steel vary with steel grades. Commonly used traditional nitrided steels are 38CrMnA1, 42CrMo, 35CrMo, 30CrMnsi, 35CrMnsi, 35CrMnV, and 40CrMnMo.

What is the reason for the damage of gearbox gear?

By visually inspecting the gears, you can find the potential factors that cause gear wear and failure.The wear pattern or deformation of gear teeth provides clues for judging the effect of external forces.

normal abrasion:

The gear is in normal mode, and the entire surface of each tooth above or below the pitch line is very smooth.

Abnormal wear:

1. Abrasion Abrasion is a unique mode of damage to gear teeth.The change of the mode depends on the type of abrasion and its special external force.The abrasive wear caused by the particles in the lubricating oil will have scratches from the root to the top of the tooth.

2. Chemical erosion and corrosion of water and other impurities in the lubricating oil can also cause gear degradation and early failures. (There are small irregular pits on the surface).

3. Overload This mode is caused by excessive gear load changes.Local corrosion caused by excessive torque load, rust spots on the surface caused by the implosion of lubricating oil, and local overload fatigue fracture on the edge of the gear teeth.

Common failure modes, damage characteristics and causes of gears:

The above gear box gear description is for reference only. For more questions or related processing requirements, you can consult EP Gear Technology for free.