‌Hard-tooth surface reducers are suitable for high-speed, heavy-load, and harsh industrial scenarios‌, especially in equipment requiring high load-bearing capacity, long life, and high transmission efficiency. 1. Typical applicable working conditions ‌ High-speed, heavy-load operating environment ‌ The gears of the hard-tooth surface reducer are carburized, quenched and precision ground. The tooth surface hardness can reach ‌HRC58~62‌ and can withstand large torque and high input speed (generally no more than 1500r/min). Suitable for continuous high-load equipment such as rolling mills and continuous casting machines in the metallurgical industry. ‌Frequent starts and stops and impact load scenarios‌In mining machinery (such as crushers, conveyors) and engineering machinery (such as excavators, loaders), equipment often faces short-term overload, frequent forward and reverse rotation, and impact vibration. Due to its strong fatigue resistance and high load-bearing capacity, the hard-tooth surface reducer can effectively cope with such complex working conditions. ‌24-hour continuous operation requirements‌Chemical, electric power, cement and other industries require long-term stability of the transmission system Read More

When installing the BLY13-35-4 cycloidal reducer needle gear housing, it is necessary to ensure accurate positioning and even tightening to avoid radial movement and end cover deformation. The core is to tighten the bolts diagonally in stages and control the torque. During the installation of the pin gear housing, uniform tightening directly affects the meshing accuracy and operating stability of the reducer. If the bolts are tightened unevenly, it will easily lead to eccentricity of the pin tooth shell or distortion of the end cover, which will lead to poor meshing between the cycloidal wheel and the pin teeth, local overload and even broken teeth. The specific fastening points are as follows: 1‌. The positioning stop is tightly matched. When installing the pin tooth shell into the box, make sure it fully fits the positioning stop of the box, and the gap should not exceed ‌0.01mm‌. If there is slight looseness, a 0.005–0.01mm thick copper sheet can be inserted into the seam for fine adjustment to prevent radial movement of the pin tooth shell after assembly. ‌2. Tighten the end cover bolts in diagonal steps. When installing the end cover, the bolts must be tightened in diagonal steps. Read More

The oil temperature of the ZQA500-31.5-7CA gear reducer exceeded 85°C during trial operation, which was an abnormally high temperature. It was necessary to stop the machine immediately for inspection and take systematic measures to control the temperature to avoid equipment damage. Combining the working conditions characteristics of this model and multi-source technical data, the treatment should be carried out step by step from emergency treatment, cause investigation to long-term optimization. 1. Immediate shutdown and safe cooling (emergency treatment): Immediate shutdown and power outage, and hang warning signs to prevent accidental startup. Use an infrared thermometer to detect the temperature distribution on the surface of the box, focusing on monitoring the bearing seat, output shaft end and other parts. If the local temperature is close to or exceeds 90°C, wait for at least 30 minutes to naturally cool down before operating to avoid burns. ‌It is forbidden to spray water directly to cool down‌ to prevent sudden cooling deformation of metal or seal failure. An axial flow fan can be used to blow air onto the casing to assist in heat dissipation and improve cooling efficiency. 2. Systemic troubleshooting (locating the root cause) 1. Check the lubrication system (‌1) The oil level is Read More

The efficiency of the WHC150-50-L worm reducer is mainly affected by key parameters such as transmission form, lubrication conditions, load conditions and manufacturing accuracy. Among them, the transmission characteristics dominated by sliding friction are the fundamental reason why its efficiency is lower than that of gear transmission. Analysis of the core influencing factors is as follows: 1. ‌Transmission ratio and speed ratio design‌The worm gear reducer can achieve a large transmission ratio in a single stage (for example, the WHC series speed ratio can be selected from 8 to 50)‌, but the larger the transmission ratio, the smaller the worm lead angle, and the higher the sliding speed, resulting in increased friction loss and a decrease in overall efficiency. Generally, the transmission efficiency of WHC type reducer is in the range of ‌70%–90%‌. The efficiency is higher at low speed ratio and may be lower than 75% at high speed ratio. 2. ‌Lubrication status and lubricating oil performance‌Good lubrication can form an elastic hydrodynamic oil film and reduce direct contact between tooth surfaces. If the lubricating oil viscosity does not match or the oil quality deteriorates, friction losses will be significantly increased. push Read More

To determine whether the WPKS155‑60 worm gear reducer is short of oil, first use the cold shutdown state to check the oil window/oil level plug (the most accurate), and then combine the temperature, noise, leakage, and oil quality to make a comprehensive judgment. Four tricks can quickly diagnose the problem. 1. Static visual inspection (must do when the machine is powered off and cooled to room temperature) 1. Oil window observation (most commonly used) position: transparent oil mirror on the side of the box (with MIN/MAX or centerline scale). Standard: The oil level must be between MIN and MAX, preferably above the center line (approximately 2/3); when there is no scale, it is normal for the oil to submerge 1/3 to 1/2 of the worm tooth root and not submerge the worm axis. Oil shortage judgment: If the oil level is lower than MIN, the oil level cannot be seen, or there is only a small amount of oil stain, it can be directly judged as oil shortage. 2. Check the oil level screw plug (when there is no oil window). The position is: the oil level screw plug at the centerline height of the side of the box (not the oil drain/oil filling hole). Operation: Place it horizontally, turn off the power and cool down, then unscrew Read More

SBD65-PB-40-76-2.2KW Schenck said that the items that must be checked when restarting the special reducer after long-term shutdown are listed in the order that can be directly executed on site, which is concise and practical: 1. Confirm the status before shutdown and record the duration of shutdown, reason for shutdown, whether there are abnormal noises, oil leaks, overheating, large vibrations and other abnormalities before shutdown. Make sure the equipment is powered off, tagged out, and locked. Maintenance while powered on is strictly prohibited. 2. Appearance and installation inspection 1. Check the reducer body, motor, base, and torque support for corrosion, deformation, and cracking. 2. Check whether the anchor bolts and torque arm fixing bolts are loose, missing, or corroded. 3. Check whether there is any rust or sticking at the joint between the hollow shaft and the transmission shaft of the scale body. 4. Check whether the coupling/key/expansion sleeve is intact, not loose or damaged. 5. Check whether the connecting flange and the joint of the motor and reducer are displaced. 5. Check whether the installation level and coaxiality of the whole machine remain in their original state. 3. Lubrication system inspection (key points) 1 Read More