Please provide a detailed introduction to the structure of ZFY hard tooth cylindrical gear reducer

ZFY hard tooth surface cylindrical gear reducer is usually composed of gears, shafts, bearings, housing, oil seals, lubrication and cooling systems, and accessories.

gear

Material: High strength low-carbon alloy steel, such as 20CrMnTi, 20CrMo, etc., is generally used, which is carburized and quenched. The gear hardness reaches HRC58-62, with high strength, wear resistance, and fatigue resistance.

Processing technology: All adopt grinding technology, with high precision and good contact, which can ensure stability and accuracy during the transmission process, reduce noise and vibration.

Structural form: Usually cylindrical helical gears. Compared with spur gears, helical gears have a higher degree of coincidence, higher load-bearing capacity, smooth transmission, and lower noise during the transmission process.

axle

Material: High quality medium carbon steel or medium carbon alloy steel, such as 45 steel, 40Cr, etc., are generally used. After quenching and tempering treatment, they have good comprehensive mechanical properties.

Structure: Depending on the model and specifications of the reducer, the structural form of the shaft also varies, generally including solid shaft and hollow shaft. The solid shaft has a simple structure, high strength, and is suitable for small power reducers; The hollow shaft structure can reduce the weight and rotational inertia of the gearbox, making it suitable for high-power gearboxes.

bearing

Type: Commonly used bearings include rolling bearings and sliding bearings. Rolling bearings have the advantages of low friction coefficient, low starting resistance, high rotational accuracy, and easy installation and maintenance, making them suitable for high-speed and light load applications; Sliding bearings have the advantages of high load-bearing capacity, good seismic performance, and low noise, making them suitable for low-speed and heavy-duty applications.

Installation method: There are three installation methods for bearings: inner ring fixing, outer ring fixing, and fixing both inner and outer rings. The inner ring fixing method is suitable for situations where the shaft speed is high and the load is small; The outer ring fixing method is suitable for situations where the shaft speed is low and the load is large; The fixed method of both inner and outer rings is suitable for situations where the shaft speed and load are both high.

box

Material: Generally, high-strength cast iron or cast steel, such as HT250, ZG270-500, etc., are used, which have good casting and mechanical properties.

Structural form: There are two types of structural forms for the box: integral and sectional. The integral box structure is simple, compact, and has good sealing performance, but it is difficult to process and assemble; The structure of the split box is complex, but it is easy to process and assemble, making it suitable for large reducers.

oil seal

Function: To prevent lubricating oil leakage and ensure the normal operation of the gearbox.

Type: Commonly used oil seals include skeleton oil seals and mechanical oil seals. The skeleton oil seal structure is simple and easy to install, suitable for low-speed and low-pressure applications; Mechanical oil seals have good sealing performance and long service life, suitable for high-speed and high-pressure applications.