Article List
- How to use a dial indicator and feeler gauge to detect the parallelism between the output shaft and the load axis of the NRV040-1:20 reducerThe core of testing the parallelism between the output shaft and the load axis of the NRV040-1:20 reducer is to measure the radial deviation with a dial indicator and assisted verification with a feeler gauge to ensure that the two axes are not tilted or offset. The specific operations are as follows: 1. Clearly detect the standard allowable deviation of parallelism: ≤0.1mm/m (radial deviation), angular deviation ≤0.05mm/m. Detection core: The two axes must meet the requirements in the 'radial direction' (left and right/up and down offset) and 'angular direction' (tilt) before the parallelism reaches the standard. 2. Necessary tools for tool preparation and preliminary preparation: dial indicator with an accuracy of 0.01mm, magnetic meter base, 0.01-1mm feeler gauge, level, and wrench. Preliminary cleaning: Wipe the outer circles of the two shafts and the flange end surfaces to remove oil stains and burrs to avoid affecting the detection accuracy. Preliminary fixation: Do not tighten the reducer foot bolts temporarily, leaving room for adjustment to ensure that there is no axial movement of the shaft during testing. 3. Dial indicator detects radial level
- How to judge whether the NRV110-50 reducer is poorly alignedTo determine whether there is misalignment of the NRV110-50 reducer (the axis of the output shaft and the load shaft is misaligned), it can be comprehensively judged through three aspects: operating status observation, physical detection and data measurement. The specific method is as follows: 1. Quickly identify abnormalities through operating status (preliminary judgment) 1. Abnormal vibration Periodic and regular vibrations occur during operation, especially near the coupling, and the vibration frequency increases with the increase in speed (poor alignment will cause uneven stress on rotating parts, resulting in centrifugal force vibration). If you touch the reducer housing or load equipment with your hands, you will feel an obvious 'beating feeling' instead of uniform and smooth vibration. 2. The abnormal sound is different from the 'buzzing sound', 'clicking sound' or 'friction sound' in normal operation, especially when the load increases (axis deviation will cause abnormal coupling or gear meshing, resulting in impact or friction noise). The location of the abnormal noise is concentrated at the connection between the output shaft and the coupling.
- What are the causes of abnormal meshing of the worm gear of the WPWA60-40-A reducer?This problem is very accurate. The core reasons for the abnormal meshing of the worm gear of the WPWA60-40-A reducer are concentrated in four categories: assembly deviation, wear and aging, lubrication failure, and improper working conditions. The details are as follows: 1. Assembly and installation deviation center distance deviation. The actual installation center distance deviates from the design value (60mm), resulting in tooth tip or tooth root contact during meshing instead of contact in the middle of the tooth surface. Axis position deviation, the axis of the worm and the worm gear is not perpendicular (tolerance ≤ 0.02mm/m) or not parallel, causing unbalanced meshing. Bearing installation problems, the bearing clearance is too large/too small or the assembly is tilted, causing the worm/worm gear shaft to move and skew, destroying the meshing accuracy. The deformation of the box, uneven pretightening force of the base bolts or insufficient foundation rigidity lead to slight deformation of the box, which indirectly affects the meshing position. 2. Component wear and quality issues: Tooth surface wear. After long-term operation, the worm gear (copper) tooth surface wears unevenly, the tooth thickness becomes thinner, or the worm tooth surface is rusted or scratched.
- How to judge whether the worm gear of WPWA155-50-B reducer is aligned with the teethTo determine whether the worm gear of the WPWA155-50-B reducer is aligned with the teeth (that is, whether the meshing state is normal), the following comprehensive inspection methods are required: 1. Appearance and contact mark inspection Red red powder coloring method Normal status: The contact area should be located in the middle of the tooth surface (near the pitch circle), with an area ≥ 70% and even distribution. Abnormal performance: If the contact area is biased toward the tooth top or root, or distributed in a band/point pattern, it indicates axis coaxiality deviation or uneven tooth surface wear. Apply red powder on the tooth surface of the worm gear, and observe the contact spots after turning the worm manually: Tooth surface damage observationCheck whether there are scratches, glue (melted plaques) or pitting (pits) on the tooth surface of the worm gear (copper alloy), and whether the tooth surface of the worm (steel) is polished or sunken. 2. Operation status monitoringNoise and vibrationDuring normal operation, there is a uniform 'rustling' sound. If there is a periodic 'clicking' sound or the vibration amplitude is >1.5mm/s (normal ≤0.8mm/s), it will prompt
- How to judge whether the seal of PWU200 worm gear reducer is goodTo determine whether the seal of the PWU200 worm gear reducer is in good condition, the core is through the combination of 'visual observation + operation monitoring + targeted detection', focusing on checking for oil leakage, air/water intake and impurity intrusion. The specific methods are as follows: 1. Static visual inspection (stop state) Check key sealing parts: focus on the output shaft oil seal, box joint surface, and oil filler port/ Wipe the oil drain plug and the periphery of the breather valve with a clean paper towel and observe. If there are no oil stains or oil residue, it is initially qualified. Check the appearance of the seal: When disassembling the end cap or screw plug, check that the oil seal lip is not cracked or deformed, that the sealing gasket is not aged, hardened, or damaged, and that the sealant on the joint surface is not peeled off or cracked. Test the ventilation function: Press the ventilation valve to exhaust smoothly and rebound the seal after letting go. No oil spills from the ventilation valve to avoid excessive internal pressure from damaging the seal due to poor ventilation. 2. Operating status monitoring (no-load + load) no-load operation detection
- Provide some methods to prevent resonance and structural problems of DCY160-25-IV reducerThe DCY160-25-IV reducer is a commonly used industrial transmission equipment. To prevent its resonance and structural problems, we can start from multiple stages such as design, manufacturing, installation, operation and maintenance. The specific methods are as follows: 1. Optimize the design to improve the rigidity of the box: use topology optimization technology, rationally design the box structure, add reinforcing ribs, etc., to increase the natural frequency of the box and keep it away from the excitation frequency. For example, the design of stiffeners follows the T-section principle, and the thickness of the ribs is 0.6-0.8 times the wall thickness. Select appropriate gears: Use modified gears, such as parabolic drum teeth, to reduce gear meshing impact and reduce vibration excitation. It is also possible to increase the tooth surface contact area and reduce vibration by adjusting the micro-geometric parameters such as the pressure angle and helix angle of the gear. Consider damping characteristics: Consider increasing the damping of the system when designing, such as selecting appropriate lubricating oil, using its viscous damping to absorb vibration energy, or installing a damper in the reducer structure, such as hydraulic
- How to check the side clearance of SCWS200-20-IF worm gear reducer during installationThe main methods to check the side clearance of the SCWS200-20-IF worm gear reducer include the feeler gauge method, dial indicator method and lead pressure method. The details are as follows: Feeler gauge method: First clean the meshing tooth surface of the reducer to ensure that there is no oil dirt, impurities, etc. affecting the measurement. Then use a feeler gauge directly inserted between the meshing teeth of the worm gear and worm to measure the tooth side clearance. When measuring, multiple measurements need to be made at different positions on the worm gear circumference (such as 120° equal positions), and the average value is taken as the backlash value. This method is suitable for situations with large side clearances and is easy to operate, but the accuracy is relatively low. Dial indicator method: Fix the dial indicator on the box so that the probe of the dial indicator is against the tooth surface of the worm gear. Fix the worm gear, and then rotate the worm forward and backward. The maximum difference between the dial indicator pointer is the backlash. If it is difficult for the dial indicator to directly contact the worm gear tooth surface, a measuring rod can be installed on the worm gear shaft and the backlash can be measured indirectly by measuring the displacement of the measuring rod. Lead pressing method: select lead with appropriate diameter
- How to optimize the coaxiality between the motor shaft and the SCWS225-40-F worm gear reducer shaftOptimizing the coaxiality between the motor shaft and the input shaft of the SCWS225-40-F worm gear reducer needs to be achieved through precise alignment and adjustment. The specific steps are as follows: 1. Preparation before installation Foundation inspection Make sure the installation base is flat and firm, and the pre-tightening force of the anchor bolts is uniform to avoid axis deviation caused by foundation deformation. Use a level to check the levelness of the reducer installation surface, and the error must be ≤0.05mm/m. Shaft End CleaningRemove oil dirt and burrs from the end faces of the motor shaft and reducer input shaft and coupling connection parts to avoid impurities affecting the alignment accuracy. 2. Coupling alignment method Dial indicator measurement method (recommended) a. Fix the dial indicator on the motor shaft or reducer input shaft, and measure the radial/axial runout of the outer circle and end face of the coupling: Radial runout : The difference between the maximum and minimum readings in the circumferential direction of the coupling outer circle is ≤ 0.05mm. Axial runout: The axial offset of the coupling end face is ≤0.02mm. b
- What impact will the parallelism error have when installing the ZSY710-80-IV reducer?The parallelism error during the installation of the ZSY710-80-IV reducer will directly affect the transmission stability, component life and operating efficiency. The core impact is concentrated in the following aspects: 1. Increased wear and damage of transmission components and abnormal gear meshing: Parallelism deviation will lead to uneven gear tooth surface contact, localized stress concentration, tooth surface wear, accelerated pitting corrosion, and broken teeth in severe cases. Coupling damage: If a coupling is used for connection, the deviation will cause the coupling to bear additional radial force and bending moment, leading to aging and cracking of the elastomer, deformation of the metal coupling, or loosening of the bolts. Bearing failure: The reducer and motor bearings will cause eccentric wear due to unbalanced loads, increase the temperature, intensify abnormal noise, and shorten the service life of the bearings. 2. Vibration and noise caused by running vibration amplification: Parallelism error causes the force imbalance of the transmission system, causing periodic vibration during operation. The greater the deviation, the more severe the vibration. Significant increase in noise: poor gear meshing and abnormal bearing stress will be accompanied by
- What is the service life of the core components of ZLY630-8-I gear reducer?The core components of ZLY630-8-I gear reducer mainly include gears and bearings, whose life is affected by many factors, as follows: Gear life: ZLY630-8-I The gears of the gear reducer are usually made of high-quality alloy steel through carburizing and quenching, and the tooth surface hardness reaches HRC54-62. Under normal working conditions, that is, the load does not exceed the rated torque, the lubrication is good, the ambient temperature is suitable, etc., the gear life can generally reach 10 years and above. If the actual load exceeds the rated torque, the gear life will be shortened sharply. For example, when the load factor reaches 1.2 (safety factor ≈ 0.83), the gear life may be reduced to 1/5 of the theoretical value. Bearing life: The life of the bearing is usually L10 life is expressed as the operating time that 90% of the bearings do not suffer fatigue failure under rated load. ZLY630-8-I gear reducer bearing L10 has average service life