Hunan Dinghan New Material Technology Co., LTD
| Heat treatment | annealing, normalizing, quenching, tempering and tempering |
| Shaft Diameter | Varies depending on application |
| Processing | Grinding, hobbing, milling |
| Operating Temperature | 0-100 degrees Celsius |
| Shape | Cylindrical gear, Helical gear |
| Service | Customized |
| Torque Capacity | 1000 Nm |
| Gear Position | External Gear |
| Tooth profile | Gleason type |
| Application | Mechanical component |
| Teeth Accuracy Grade | ISO 6-7 Grade |
| Payment Terms | T/T |
| Supply Ability | Negotiable |
| Delivery Time | Sample order: 7 days |
| Packaging Details | According to customer's requirement |
| Material | 40Cr/40CrMo steel |
| Brand Name | DINGSCO |
| Certification | ISO9001 |
| Place of Origin | Changsha, China |
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Product Specification
| Heat treatment | annealing, normalizing, quenching, tempering and tempering | Shaft Diameter | Varies depending on application |
| Processing | Grinding, hobbing, milling | Operating Temperature | 0-100 degrees Celsius |
| Shape | Cylindrical gear, Helical gear | Service | Customized |
| Torque Capacity | 1000 Nm | Gear Position | External Gear |
| Tooth profile | Gleason type | Application | Mechanical component |
| Teeth Accuracy Grade | ISO 6-7 Grade | Payment Terms | T/T |
| Supply Ability | Negotiable | Delivery Time | Sample order: 7 days |
| Packaging Details | According to customer's requirement | Material | 40Cr/40CrMo steel |
| Brand Name | DINGSCO | Certification | ISO9001 |
| Place of Origin | Changsha, China | ||
| High Light | Gearbox Cylindrical Gear ，Machine Tools 40Cr Cylindrical Gear ，40Cr Cylindrical Gear | ||
40Cr Cylindrical Gear Helical Gear For Gearbox And Machine Tools
It has good mechanical properties, suitable for medium load and speed applications.
Characters of Cylindrical Gear Helical Gear:
1. Helical gear transmission is basically the same as spur gear transmission. The main difference is that helical gears have a helix angle β. This angle has a direct impact on the axial force Fa, and Fa is proportional to tgβ.
2. In order to prevent the bearing from being subjected to excessive axial force, the helix angle β of the helical cylindrical gear should not be too large. However, if β is too small, the characteristics of the helical gear will not be so obvious. Usually, the value range of β is 8°~20°, and 8°~15° is commonly used. In some designs, β tends to increase, and some even reach 25°.
Heat treatment characteristics of 40Cr steel:
1. 40Cr steel is a medium carbon alloy steel, suitable for manufacturing mechanical parts that bear medium loads and work at medium speeds, such as gears, shafts, worms, etc. on machine tools.
2. The heat treatment process of 40Cr steel includes annealing, normalizing, quenching, tempering and tempering, which are essential to ensure the performance of the gear. The design of the heat treatment process needs to be different according to the specific application and working conditions of the gear.
3. Normalizing is part of the preliminary heat treatment, and the heating temperature is usually 30 to 50 degrees above Ac3 (the critical temperature of steel). For medium carbon alloy steel, the normalizing temperature is usually 50 to 100 degrees above Ac3, and the specific temperature range is about 850 to 900 degrees. The quenching and tempering process is used to increase the hardness and strength of the steel while maintaining a certain ductility.
Gear design elements:
When designing a gear, multiple factors need to be considered, including tooth shape, module, pressure angle, tooth top height, tooth root height, number of teeth, etc. Among them, the pressure angle is an important parameter, which determines the inclination angle of the gear tooth relative to the normal of the reference line. Generally, a 20-degree pressure angle is used, but other values can also be selected according to specific applications. The larger the pressure angle value, the wider the tooth root will be, which is beneficial to the improvement of gear strength.
Selection of module:
Module is the basic element that indicates the size of gear teeth. The choice of module depends on the load and rotation speed of the gear. Generally speaking, the greater the load and the faster the rotation speed of the gear, the larger the module needs to be designed to enhance the strength of the gear. There are standard values for the module, and the appropriate module can be selected according to the specific application and requirements.
40Cr Spiral Bevel Gear Parameters:
| Products | 40Cr Cylindrical Gear Helical Gear For Gearbox And Machine Tools |
| Material | 40Cr/40CrMo |
| Shape | Cylindrical gear/ Helical gear/ Spur gear |
| Gear Teeth manufacturing | Grinding, hobbling, milling |
| Module (M) | ≤4 |
| Teeth Accuracy Grade | ISO 6-7 Grade |
| Heat Treatment | Annealing, normalizing, quenching, tempering and tempering T |
| Hardness | Quenching and tempering(32-36HRC) |
About us:
1. Our company was formerly known as Changsha Double Star Gear Industrial Co., Ltd., which was established in 1994. It is a directly affiliated school-run enterprise founded by Professor Zeng Tao of Central South University, an authoritative expert on spiral bevel gears in China.
Factory's pictures:
Company Details
Business Type:
Manufacturer,Exporter,Seller
Year Established:
1994
Total Annual:
70 million-100 million
Employee Number:
50~60
Ecer Certification：
Verified Supplier
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 Cha... 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 Cha...
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