Q: What types of gears do you mainly produce, and which equipment are they suitable for?

A: We offer a full range of products including spur gears, helical gears, bevel gears, racks, gear shafts, and worm gears.

Q:  How to determine which type of gear my equipment needs?

A: It depends on three core factors:

①Transmission direction (spur/helical gears for parallel shafts, bevel gears for vertical shafts);

②Equipment speed (helical gears are preferred for speeds ＞3000r/min, while spur gears are optional for speeds ＜1000r/min);

③Load capacity (helical gears or reinforced spur gears are recommended for heavy loads, with face width ≥8-10 times the module).

You can provide equipment parameters (e.g., power, speed, load), and our technical team will offer free selection advice.

Q: How do the module (m) and number of teeth (z) of a gear affect its performance? How to choose them?

A:The module directly determines the load-bearing capacity of the gear—the larger the module, the thicker the tooth, and the stronger the impact resistance (e.g., a gear with m=5 can bear a larger load than one with m=3);

The number of teeth affects the transmission ratio (determined by the ratio of teeth with the mating gear) and size (for the same module, more teeth mean a larger gear diameter).

Selection advice: Calculate the minimum module based on the equipment power (reference formula: m≥K׳√(P/n), where K is the working condition coefficient), then determine the number of teeth according to the installation space.

Q：What is the appropriate tooth surface hardness? What are the application scenarios for different hardness levels?

A: Common tooth surface hardness is divided into three categories:

Soft tooth surface (HRC≤35): Such as 45# steel after quenching and tempering, suitable for low-speed, light-load scenarios without severe impact (e.g., manual machinery);Medium-hard tooth surface (HRC35-45): Such as 40Cr after quenching and tempering, applicable to medium-load general machinery (e.g., fans, water pumps);Hard tooth surface (HRC55-62): Such as 20CrMnTi after carburizing and quenching, suitable for high-speed, heavy-load equipment with frequent starts (e.g., automotive gearboxes, rolling mills).

Q: What impact does the gear accuracy grade (e.g., grade 6, 7 in GB/T 10095) have? Which grade should I choose?

A: Common tooth surface hardness is divided into three categories:

Soft tooth surface (HRC≤35): Such as 45# steel after quenching and tempering, suitable for low-speed, light-load scenarios without severe impact (e.g., manual machinery);Medium-hard tooth surface (HRC35-45): Such as 40Cr after quenching and tempering, applicable to medium-load general machinery (e.g., fans, water pumps);Hard tooth surface (HRC55-62): Such as 20CrMnTi after carburizing and quenching, suitable for high-speed, heavy-load equipment with frequent starts (e.g., automotive gearboxes, rolling mills).

Q: What are the common gear materials, and what are their advantages and disadvantages?

A: The main materials and their characteristics are as follows:

45# steel: Low cost, suitable for soft tooth surface gears, but with average wear resistance;

40Cr: Better strength than 45# steel after quenching and tempering, suitable for medium-load equipment with high cost performance;

20CrMnTi: High tooth surface hardness (HRC58-62) after carburizing and quenching, good core toughness, suitable for heavy-load, impact working conditions;

304 stainless steel: Corrosion-resistant, suitable for humid/acid-alkali environments (e.g., food machinery, chemical equipment), but with slightly lower strength;

Ductile iron (QT500): Good shock absorption, lower cost than steel, suitable for low-speed, light-load scenarios requiring noise reduction.

For any additional related inquiries, please feel free to contact us. Our technical engineers and sales specialists, who possess extensive professional expertise and a dedicated service attitude, will be pleased to provide you with detailed and prompt responses.