Article List
- What are the dangers of problems with the installation foundation of NGW113-400 planetary reducerNGW113-400 If there is a problem with the installation foundation of the planetary reducer, it may cause the following hazards: the vibration and noise increase: the installation foundation is unstable or unstable, and the reducer will vibrate significantly during operation, accompanied by noise. This is because the instability of the foundation causes the reducer to generate additional shaking and impact during operation, causing vibration and noise. Accelerating wear of parts: Vibration and instability caused by basic problems will cause parts such as bearings and gears to bear additional load and impact forces, causing the wear of bearings and gears to accelerate, shorten their service life. Impact transmission accuracy: Inaccurate installation foundation may affect the meshing accuracy of the gears inside the reducer and poor gear meshing, which will cause errors during the transmission process, affecting the transmission accuracy and operating stability of the equipment. A possible shaft breakage accident: If the installation foundation problem causes the concentricity of the reducer output shaft and the driven part of the shaft
- List some heat treatment processes that can reduce the noise of the DFY630 gear reducerThe following are some heat treatment processes that can reduce the noise of the DFY630 gear reducer: Normalization: The tooth blank is roughly processed into a fine forging and normalization. The purpose is to soften the steel parts for cutting, eliminate residual stress, refine grains, improve the tissue to improve the mechanical properties of the steel, and prepare tissue for the final heat treatment. During normalization treatment, the furnace temperature must be kept uniform, and station equipment should be used to heat and cool the workpieces evenly. It is strictly forbidden to stack them together. Tempering and tempering: This is also a commonly used preparatory heat treatment process, which can obtain good comprehensive mechanical properties, make the gear core part have sufficient toughness, and at the same time eliminate residual stress, reduce the deformation of the gear during subsequent processing and use, which helps reduce noise. High-frequency quenching of the tooth surface: The final heat treatment of the gear can be made using high-frequency quenching of the tooth surface. This process can make the tooth surface have high strength, hardness, wear resistance and fatigue limits, while the core remains sufficient.
- How to choose gear material suitable for hard toothed DFY710 gear reducerWhen choosing gear materials suitable for hard tooth surface DFY710 gear reducer, multiple factors need to be considered comprehensively. The following are the specific selection points: considering load conditions, light load, low speed or medium speed, low impact force, and low accuracy: medium carbon steel can be selected, such as Q235, Q275, 40, 45, 50, 50Mn, etc., and soft tooth surface gears are often made by heat treatment such as normalizing or tempering. Normalizing hardness HBS160-200, and general tempering hardness HBS200-280. In the case of medium load, medium speed, withstand certain impact loads and relatively stable movement: medium carbon steel or alloy tempered steel, such as 45, 50Mn, 40Cr, 42SiMn, etc., low-hardenable steel such as 55Tid and 60Tid can also be used. Hard toothed gears are made through high-frequency or medium-frequency quenching and low-temperature tempering, and the toothed surface hardness can reach HRC50-55. Heavy load, high speed or medium speed, and relatively
- How to avoid damage to parts when cleaning DCY250-31.5-4 gear reducerWhen cleaning the DCY250-31.5-4 gear reducer, damage to the parts can be avoided by: Selecting and using a cleaner correctly: Use cleaners compatible with gears and other components materials, such as gasoline, diesel or special gear cleaners, to avoid using abrasive cleaners or solvents that can corrode or wear the surface of the part. Reasonably disassemble parts: disassemble from the output end to the input end according to the transmission level to avoid damage to parts due to incorrect sequence. For parts that fit with the shaft interference, such as worm gear, it needs to be removed with a pulling horse or hydraulic tools. If the gear is stuck, inject penetration lubricant (such as WD-40) before soaking before operation. For corroded bolts, a combination of 'loosening agent + hot air gun' can be used to avoid forcibly breaking. Avoid knocking damage: It is prohibited to use an iron hammer to directly hit precision parts such as gears and shaft heads, and instead use a copper rod or nylon hammer. If you need to tap on the contact surface, you can use copper plate to buffer. Prevent parts
- How to determine whether the parts of DCY280-48.87-IIS hard-toothed gear reducer need to be replacedTo determine whether the parts of the DCY280-48.87-IIS Hard-tooth surface gear reducer need to be replaced, you can use the following methods: Gear judgment method Appearance inspection: Disassemble the reducer housing and check whether there are scratches, pitting, peeling, broken teeth on the surface of the gear. The normal tooth surface should be smooth. If metallic luster wear marks or black sludge adheres, it may be abnormal wear. Dimension measurement: Use a tooth thickness caliper and a dial gauge to measure the wear amount of tooth thickness. The standard tooth thickness tolerance is usually ±0.05mm. It can also be judged by the engagement gap. The normal engagement gap is generally 0.1-0.3mm, depending on the model. If the tooth thickness wear exceeds 10% of the original thickness, or the meshing gap exceeds 50% of the standard value, replacement should be considered. Operating status monitoring: When starting the computer, monitor for abnormal noise, such as sharp friction sounds and periodic impact sounds. At the same time, the bearing temperature is detected. Under normal circumstances, the bearing temperature is ≤70℃, if it exceeds 8
- How to determine whether the dual-stage NGW121 planetary gear reducer needs repair or replacementTo determine whether the double-stage NGW121 planetary gear reducer needs to be repaired or replaced, you can start from the following aspects: Appearance inspection: Check whether the reducer shell has cracks, deformation or damage. If these situations exist, it may affect the stability of its internal structure and needs to be repaired or replaced. Check whether the connection parts, such as bolts, nuts, etc. are loose. Loose connections may cause vibration and abnormal noise during operation. They need to be tightened in time. If the connecting parts are damaged, they need to be replaced. In addition, it is necessary to observe whether there is any oil leakage. If lubricating oil leaks in the oil seal, end cap, etc., it may be that the seal is aging or damaged, and the seal needs to be replaced. Sound judgment: The sound of the reducer in normal operation is stable. If there is a harsh, sharp, impactful or irregular sound during operation, it may be caused by gear wear, poor meshing, bearing damage, etc. It is necessary to further check the internal components and determine whether to repair or replace according to the degree of damage. Temperature inspection
- What are the common installation errors that affect the normal operation of the NGW42-35.5-7.5KW planetary reducerThe following are some common installation errors that affect the normal operation of the NGW42-35.5-7.5KW planet reducer: Coaxiality difference: The centering deviation between the motor and reducer coupling is too large, and the radial deviation is > 0.1mm Or the angle deviation is >0.05mm When the input bearing is subjected to additional bending moment. In addition, if special tooling is not used during installation, knocking the bearing will cause loose fit between the inner ring and the shaft journal, and the interference amount is less than <0.003mm, which will cause minor wear. These situations may affect the normal operation of the reducer, resulting in the appearance of the outer ring raceway of the bearing 'False Brunch indentation', uneven wear of gears along the tooth width direction. Improper adjustment of meshing clearance: The gear meshing gap is too small, and the teeth surface will be adhered and worn due to compression under load; the side gap is too large, and impact load will be generated during startup or reversing, causing the teeth surface to peel off. Data show that for every 0.02mm reduction in side gap, the contact stress of the tooth surface increases.
- How to choose a material suitable for DFY320 hard toothed gear reducerDFY320 Hard-toothed gear reducer is mainly composed of gears, gear shafts, box and other components. When choosing suitable materials, you must comprehensively consider the working requirements and performance characteristics of each component. The following are specific material selection methods: gear and gear shaft material considerations: strength and hardness need to be considered to meet the load-bearing capacity requirements; wear resistance to ensure service life; corrosion resistance, adapt to specific working environments; processing performance, easy manufacturing and processing; and cost, comprehensively considering cost-effectiveness. Material recommendation: Commonly used materials include 20CrNiMo, 20CrNi2Mo, 42CrMo and other fine rolled alloy steels. These materials have high strength and toughness and are suitable for high-speed and high-load transmission requirements. 20CrMnTi can also be used, which can meet the requirements of hard-tooth surface gear after carburizing, high-frequency surface quenching heat treatment specifications and teeth grinding. Cabinet material considerations: The box must bear the support shaft system, sealing and lubricating medium, and bearing
- How to optimize the heat treatment process of DFY280 reducer while ensuring stable qualityThe optimization of the heat treatment process of the DFY280 reducer requires comprehensive consideration of factors such as material characteristics, part structure and performance requirements. The following are some optimization methods under the premise of ensuring stable quality: Reasonable selection of heat treatment methods Surface quenching: For the gears of the DFY280 reducer, high-frequency quenching can be used if the size is small; if the size is larger, flame quenching is more suitable. Surface quenching can improve the hardness of the tooth surface. It is best when the hardened layer includes the bottom of the tooth root, making the hardness reaching 45-55HRC while maintaining the toughness of the heart. Carburizing quenching: If the gear requires a large load-bearing capacity, the carburizing quenching process can be selected. However, the gear will deform after carburizing and quenching, and the finishing process needs to be used to eliminate it to ensure the accuracy of the gear. Nitriding: Nitriding can achieve high tooth surface hardness and wear resistance under conditions of small deformation, and can improve the load-bearing capacity without finishing the finish after nitriding, which is suitable for precision.
- How to ensure the quality stability of heat treatment process in the fourth-level hard tooth surface DFY225 gear reducerTo ensure the mass stability of the heat treatment process in the DFY225 gear reducer, you can start from the following aspects: Control the material quality: Choose steel with narrow hardenable belts, because the narrower the hardenable belts, the more stable the deformation. At the same time, controlling the A1/N content ratio in the range of 1-2.5 can narrow the hardenable belt and reduce deformation. Pay attention to the frame segregation and strip-like structure of the material to avoid affecting the uneven deformation and uneven carburization of the gear spline holes. Optimized preparatory heat treatment: For gear forgings of DFY225 gear reducer, if the normalized hardness is too high, the crystal is mixed, and a large amount of Sorthine or Wei's tissue is present, the inner hole will be deformed and enlarged. Therefore, temperature-controlled normalized fire or isothermal annealing can be used to treat the forgings to obtain appropriate tissue and hardness, laying a good foundation for subsequent heat treatment. Precisely set process parameters: Heating temperature and time: Accurately according to the characteristics of gear material and heat treatment process requirements