Article List

• What faults will be caused by adding too much or too little lubricating oil to the reducer?

  The amount of reducer lubricating oil added needs to be strictly controlled within a reasonable range (usually 1/2 to 2/3 of the oil window or oil dipstick). Too much or too little oil will destroy the normal operation of the reducer and cause the following series of failures: 1. Consequences of adding too much lubricating oil Many people have the misunderstanding that 'the more lubricating oil, the better', but excessive lubrication will bring serious negative effects: abnormal temperature rise: too much lubricating oil will cause the gear to violently agitate the oil during operation, increasing operating resistance and power loss. This severe friction and agitation will generate a large amount of heat, causing the reducer oil temperature to be too high. Exacerbating the risk of oil leakage: Serious splashing of lubricating oil will increase the pressure inside the machine, and a large amount of oil will accumulate in the shaft seal and joint surface. At the same time, the hydraulic pressure will directly impact the oil seal, which can easily cause the seal to deform or even rupture, causing oil leakage. Accelerated component wear: The continued rise in oil temperature will reduce the viscosity of the lubricating oil, causing it to lose its proper lubricity.

  June 08, 2026
• The reducer leaked oil quickly after installation after maintenance. Summary of common mistakes in assembly and sealing

  Oil leakage occurs soon after the reducer is repaired and installed, which is usually closely related to the process details and improper handling of seals during the assembly process. The following summarizes several core error-prone points in the assembly and sealing process: 1. Irregular cleaning of the joint surface and application of sealant. Incomplete cleaning of the joint surface: When assembling the upper and lower shells, if impurities such as old sealant, iron filings or oil are not completely removed, the joint surface will not fit tightly, forming tiny gaps and causing leakage. In addition, if there are scratches on the joint surface with a depth exceeding 0.25 mm, the sealing effect will be seriously affected. Improper use of sealant: Poor thickness control when applying sealant (reasonable thickness should be controlled between 0.2 to 0.5 mm). If too little glue is applied, it will not be able to seal; if too much glue is applied, it will be squeezed into the inside of the box when the bolts are tightened. After breaking, it will float in the oil, which can easily block the internal oil passage and cause the bearing to lack lubrication. At the same time, it is also common to fail to avoid oil holes, oil grooves and threaded holes when applying glue.

  June 08, 2026
• How to judge the fault location of reducer in filling machinery

  In filling machinery, the reducer is the 'power center' that ensures the synchronous operation of all components. The location of the fault can usually be determined through three main dimensions: 'listening and location identification', 'touch perception' and 'operation test': 1. Analysis from a sound perspective (listening and location identification). Different abnormal sounds often correspond to different internal damages: Harsh friction sound: usually indicates a problem with the gear. It may be that the gears are dry grinding due to insufficient lubricating oil, or the tooth surfaces are severely worn and become rough. Periodic knocking sounds: Regular 'dong-dong' sounds often point to bearing failure. This may be caused by worn bearing balls, broken cage, or improper installation resulting in uneven eccentric force. High-frequency whistling sound: This is mostly caused by an ineffective lubrication system, such as using the wrong type of lubricating oil, too dirty oil, or the oil line is clogged. Sudden breaking sound: This indicates that the gear may have broken teeth or serious cracks, resulting in a high-frequency impact sound. 2. From the perspective of vibration and temperature

  June 05, 2026
• How to extend the service life of reducer in filling machinery

  Filling machinery usually has the characteristics of high-frequency start and stop, continuous operation, and extremely high hygiene requirements. This makes the reducer, as the core transmission component, relatively harsh in working conditions. To effectively extend its service life in the filling machinery, it is recommended to start from five key dimensions: correct installation, standardized installation, scientific lubrication, daily maintenance and environmental control: 1. Ensure that the equipment matches the working conditions and leaves a sufficient safety margin: the filling line will generate a large impact load at the moment of startup or bottle jamming. When Selection, not only the rated torque must be calculated, but the peak torque and radial/axial load must also be checked. It is recommended to retain a safety factor of 1.5 to 2 times to avoid gear fatigue breakage caused by long-term overload. Consider special working conditions: If you are filling corrosive liquids (such as acid-base cleaning agents), you need to choose a reducer with anti-corrosion coating or stainless steel shell; if you are in an explosion-proof workshop (such as alcohol and solvent filling), you must choose explosion-proof motors and reducers that meet the corresponding level. 2

  June 05, 2026
• Brick and tile building materials production line reducer, wear-resistant and dust-resistant purchasing guide

  Brick and tile building materials production lines are usually accompanied by high dust, heavy loads and harsh working conditions of continuous operation. The quality of the reducer is directly related to the stability and efficiency of the entire production line. In view of the core requirements of wear resistance and dust resistance, the following is a systematic purchasing guide for you: 1. Core protection design: Build a solid dust-proof and wear-resistant barrier 1. Box sealing and protection level: Brick and tile factory dust (such as gangue powder, clay powder) can easily invade the gearbox and cause increased wear. A fully enclosed box structure must be selected, and the protection level should reach IP65 and above to effectively block the intrusion of fine dust and prevent lubricating oil leakage. 2. Wear-resistant technology of key components: Important components such as the main shaft of the brick machine and the shaft and gears in the reducer should be made of carbon steel or alloy steel and undergo quenching and tempering or quenching heat treatment processes. Hard tooth surface gears not only have extremely high wear resistance, but can also withstand large extrusion forces and impact loads, ensuring long-term stable operation of the equipment. 3. Coating the scraper and transmission parts

  June 04, 2026
• Robot joint precision reducer, how to choose accuracy and backlash

  In the robot joint precision reducer Selection, accuracy and backlash are the core indicators that determine the robot's motion quality, positioning accuracy and dynamic response. To scientifically select these two parameters, it is recommended to consider the following dimensions: 1. Clarify the core concepts and application requirements. Backlash (return gap) refers to the tiny angular displacement produced by the output end when a small rated torque in forward and reverse directions is applied to the output end when the input end is fixed. The unit is arcmin (1 degree = 60 arc minutes). The lower the backlash value, the more accurate the transmission, but the corresponding cost is also higher. The first step in selection is to back-calculate the required accuracy level based on the robot's application scenarios: Extremely high-precision scenarios (such as medical surgical robots, semiconductor equipment, precision assembly): Micron-level positioning is required, and a reducer with close to zero backlash must be selected. Harmonic reducers and RV reducers are the first choice, and their backlash is usually ≤1 arc minute.

  June 04, 2026
• What is the working principle of milling machine reducer?

  The core of the milling machine reducer is gear meshing, speed reduction, speed reduction and torque increase, and is used in conjunction with the milling machine spindle/feed transmission. 1. Basic principle: The motor has high-speed and low-torque input → multiple sets of gear pairs and large and small gears mesh alternately: the small gear drives the large gear, reducing the speed and amplifying the output torque, matching the low-speed and large torque required for milling machine cutting. Driving pinion gear: few teeth, high speed; driven large gear: large number of teeth, low speed, relying on tooth surface meshing to transmit power. 2. Division of work between two types of reducers for milling machines (1) The spindle speed reducer has a multi-stage sliding gear structure. It switches different gear pairs through the shift fork, changes the transmission ratio, realizes high and low spindle speed switching, and is suitable for different cutting conditions of milling, drilling, and boring. (2) The feed reducer is mostly used for tool feeding on the workbench. After deceleration, it drives the screw and converts the rotational power of the motor into linear feed of the workbench. The deceleration ensures stable feed and sufficient thrust to prevent milling from being stressed and boring. 3. Auxiliary structural principle: the box is sealed and lubricated

  June 03, 2026
• Flanders reducer backstop failure, don’t miss this key point during maintenance

  For equipment such as bucket elevators and inclined belt conveyors that require loading to stop and reverse, the supporting Flanders reducer will be equipped with a backstop. Once the backstop fails, it will cause the conveyor belt to reverse and slip material, or even cause a major safety accident in which the equipment overturns. When repairing a backstop failure, there are several key points that are easily overlooked. 1. The most common backstop failure is failure and slippage, which cannot prevent the equipment from reversing. In many cases, problems will still occur after replacing a new backstop. In fact, the root cause is that the input shaft or mounting seat is not processed to the correct size. The inner ring of the backstop and the shaft are an interference fit. If the fit gap is too large, the inner ring will rotate with the shaft when the backstop is working, and the outer ring will slip if it does not rotate, and it will not function as a backstop at all. When replacing the backstop, you must measure the size of the shaft. If the shaft is worn and the size is too small, you must first repair the size of the shaft and then install a new backstop, otherwise it will be useless no matter how many times you replace it. 2. Another problem is that the rotation direction is reversed during installation, and the backstop can only be installed in one direction.

  June 03, 2026
• The short service life of SEW reducer is mostly caused by the failure of these three daily maintenance details.

  The design life of SEW reducers can usually reach more than 10 years, but in actual factory applications, many equipments break down frequently after only three to five years. The reason is often not that the quality of the equipment is poor, but that the daily 'maintenance, maintenance, and inspection' are not done properly. Do the following three things to make the reducer 'extend its life'. 1. Lubricating oil management is the top priority. Lubricating oil is the 'blood' of the reducer. First oil change: After the new machine has been running for 200-500 hours, the first oil change must be performed to remove metal particles produced during the running-in period. Regular replacement: For reducers that work continuously for a long time, it is recommended to replace the oil with new oil every 5,000 hours or once a year. Mixing is strictly prohibited: the same oil as the original brand must be added. Mixing oils of different brands may cause chemical reactions and render the oil ineffective. Oil level control: The oil amount should be controlled at 1/2 to 2/3 of the oil level window. Too much oil will cause increased stirring heat, and too little oil will cause insufficient lubrication. 2. Installation and fastening cannot be careless.

  June 02, 2026
• Maintenance manual of SEW reducer in special environment

  Industrial production scenarios are complex, and harsh environments such as dust, high temperature, humidity, and heavy loads will accelerate equipment wear and tear. Maintenance cycles and projects must be optimized based on general maintenance. 1. Core pain points in dust working conditions (cement plants, coal mines, building materials factories, grinding workshops): Dust can easily enter sealing gaps and mix with lubricating oil, exacerbating the wear of gears and bearings, and blocking heat dissipation channels. Optimization plan: ① Double the cleaning cycle: add surface dust removal once a day, and deep clean the heat sink and breathable cap every week; ② Encrypt oil quality inspection: check the oil quality every 10 days, and change the oil immediately if the oil is found to be dusty; ③ Replace seals in advance: shorten the seal replacement cycle to 3-4 months; ④ Install a dust cover: install a dust-proof device at the shaft end and breathable cap to block dust intrusion. 2. Core pain points in high-temperature working conditions (metallurgy, forging, and drying equipment): high ambient temperature + heating of equipment during operation, resulting in a decrease in lubricating oil viscosity and seals

  June 02, 2026