A gear reducer is composed of a geared motor and a large-scale gearbox.

　　Performance Features:

　　A gear reducer is composed of a geared motor and a large-scale reduction gearbox. It features a compact design, eliminating the need for couplings or adapters. Load is distributed across the planetary gears, resulting in higher load-carrying capacity compared to conventional helical gear reducers. It meets the requirements for high torque output in confined spaces.

　　It is widely used in large-scale mining, steel, chemical, port, and environmental protection industries. When combined with the K and R series, it can achieve a higher gear ratio.

　　1. Reliable industrial gear transmission components;

　　2. A robust structure combined with multiple input options to meet specialized application requirements;

　　3. It features high power transmission capacity and a compact structure; the gear design is determined according to the module-based design principle.

　　4. Easy to use and maintain, with materials that can be configured and selected according to technical and engineering requirements;

　　5. Torque range from 36,000.00 Nm to 1,200,000 Nm.

　　Category:

　　When selecting a reducer, consider the operating machine’s application requirements, technical specifications, the prime mover’s performance, and economic factors. Compare the external dimensions, transmission efficiency, load capacity, weight, and cost of different types and models, and choose the most suitable reducer.

　　The load conditions of the driven machine connected to the reducer are complex and significantly influence the reducer, making them a critical factor in reducer selection and design. The load condition of the reducer—i.e., that of the driven machine—is typically classified into three levels: 1) uniform load, 2) moderate impact load, and 3) severe impact load.

　　Transmission:

　　A gear reducer is a type of transmission device, and as operating time increases, wear within its internal gearing also intensifies. So, from what aspects should the wear of the internal gears in a gear reducer be analyzed? The losses in the gear set (including the gear housing and the reducer) can be attributed to the following three factors:

　　1. Sliding friction losses between teeth.

　　2. Losses in bearings, including sliding bearings and rolling bearings.

　　3. Oil splash and churning losses.

　　Losses in gear reducers are associated with friction losses in gear drives, friction losses in rolling and sliding bearings, as well as lubricant consumption and viscosity.

　　Operation, Maintenance, and Precautions for Gear Reducers

　　1. The reducer uses 460# medium-load industrial gear oil, with an operating ambient temperature range of 0–40°C.

　　2. After the first 100 hours of operation, clean the internal cavity and replace the gear oil; thereafter, change the oil every 2,000 hours.

　　3. When dismantling or installing the reducer, avoid hammering as much as possible to prevent damage to intact components.

　　4. During operation, if oil leakage is observed at the shaft extension or joint, promptly replace the oil seals and other sealing components.

　　Cause of oil leakage

　　1. The pressure inside the fuel tank rises,

　　In a closed‑type gearbox, each pair of meshing gears generates heat. According to the Boeing law, as operating time increases, the internal temperature of the gearbox gradually rises. Since the internal volume of the housing remains constant, the pressure inside the housing builds up, causing the lubricating oil to splash outward and coat the inner walls of the gearbox casing. Because oil has relatively high permeability, under the influence of internal pressure, any poorly sealed joint will allow oil to leak out.

　　2. The reducer’s structural design is inadequate, leading to oil leakage. If the reducer is not equipped with a housing, it cannot achieve pressure equilibrium, causing the internal pressure of the oil tank to rise continuously and resulting in oil seepage.

　　3. Overfilling with fuel causes deceleration.

　　During operation, the oil sump is vigorously agitated, causing lubricant to splash throughout the machine. If the oil level is too high, substantial amounts of lubricant can accumulate at the shaft seals, mating surfaces, and other locations, leading to leaks.

　　4. Improper maintenance procedures

　　During equipment maintenance, oil leaks may occur due to inadequate removal of contaminants from mating surfaces, improper selection of sealant, incorrect installation orientation of seals, or failure to replace seals in a timely manner.