WeiGao Transmission
Email: sales@wgt.net.cn
Home / News / News / What is the difference between soft tooth surface reducer and hard tooth surface reducer

What is the difference between soft tooth surface reducer and hard tooth surface reducer

Views: 0     Author: WGT     Publish Time: 2022-05-09      Origin: Site

What is the difference between soft tooth surface reducer and hard tooth surface reducer

In the process of gear transmission design, especially the closed transmission, if the hardness of gear is not fully considered in the design, it will have a great influence on the performance of the transmission system. Such as common gear failure: tooth surface depression, tooth root fatigue crack. Related to gear hardness and gear quality. According to the tooth surface meshing, gear reducer gear is divided into soft tooth surface and hard tooth surface, reflected in the following applications:

1: soft tooth surface gear transmission (tooth surface hardness ≤350HBs), at least one of a pair of gears is soft tooth surface, usually used for general low and medium speed gear transmission, accuracy requirements are not high.

2: hard tooth surface gear transmission (tooth surface hardness > 350 HBS), the two gears are hard tooth surface. It is usually used for gear transmission with strong bearing capacity and small volume.

In some equipment, such as winches, soft tooth surfaces are usually used, while hoists now mainly use hard tooth surfaces.

The following three points are usually considered in design:

1. Close soft tooth surface gear transmission under general working conditions. Soft tooth surface steel gear transmission (≤350HBs): mainly based on the tooth surface contact strength, according to the tooth surface contact fatigue strength design; Then the bending fatigue strength of the root was checked.

2: suitable for hard tooth surface closed gear transmission device. Hard tooth surface (> 350 HBS) steel gear and cast iron gear transmission: the tooth root is mainly based on the bending strength of the tooth root, according to the bending fatigue strength design; Then the contact fatigue strength of tooth surface is checked.

3: used for open gear transmission. The main failure modes are tooth surface wear and tooth fracture. The design standard is: only according to the bending fatigue strength of the tooth root design calculation, determine the modulus, on the basis of the design modulus increase 10%-20% to consider the impact of wear.


  • Where is your product mainly exported?

    Our products are mainly exported to Japan, the United States, Germany, Southeast Asia and other countries and regions. Our customers include many OEM customers specializing in construction machinery. We have partnered with several of the Fortune 500 companies to become one of their major foundry suppliers in China.
  • How to provide goods?

    Usually we will ship the goods to the sea. The factory is only 460 kilometers away from the port. It is very convenient and convenient to transport the goods to any other country. Of course, if your cargo is very urgent, Ningbo Airport and Shanghai Airport are also nearby.
  • What is the payment term?

    When we offer you a quote, we will confirm the transaction method with you, FOB, CIF, CNF, etc. For large-scale production, you need to pay a 30% deposit before production and a 70% balance on the copy of the document. The most common way is T/T. Letter of Credit is also acceptable.
  • How to ensure the quality of your products?

    First, we will check after each process. For finished products, according to customer requirements and international standards.
  • How many employees does your company have? What is the relationship between technicians?

    We now have more than 180 employees, including 36 engineers and 28 QCs.
  • What is the ability of your company?

    We have a number of production lines with a monthly production capacity of 1,600 units and an annual production capacity of 20,000 units.

China WeiGao Transmission

WeiGao REDUCER is a high-tech enterprise integrating scientific research, development, manufacturing, sales and service. 

+86 400 801 9158

Email:sales@wgt.net.cn   wgt.net.cn@gmail.com
Fax: +8657185023658