Common faults of P3SA17/18 sealing protection components are concentrated in the shaft oil seal, box joint surface, oil drain/oil level plug and breather cap. The main problems are leakage, dustproof failure, aging and installation damage. The following is a pure text description. Shaft oil seal (input/output end) leakage: oil droplets or flange oil accumulation under the shaft end. This is mostly due to the hardening, cracking, flanging or scratching of the lip by the shaft shoulder; scratches/rust/grooves on the journal that damage the fit; bearing wear causing radial runout and uneven stress on the lip; too high cavity pressure (blocked ventilation holes) to 'press out' the oil. Dust-proof failure: dust intrusion causes accelerated wear of oil seals and bearings; lifespan is shortened by 60%–80% under high dust conditions. Installation damage: Failure to use special tools causes the lip to flip and the spring to fall off; the oil seal is reversed or the coaxiality is poor, and one side is worn. Selection / Material: inconsistent with specifications (inner diameter is too small) or not resistant to temperature/corrosion, short-term aging. Box joint surface (end cover/box) Read More

As a P series planetary reducer, the sealing principle of P3SA19's sealing protection components is consistent with the sealing logic of the same series of models and general planetary reducers. The core is designed around the shaft end, box joint surface, screw plug and breathable parts, and prevents leakage and impurity intrusion through contact seals, gap seals, etc. The specific sealing principles of each component are as follows: Input/output shaft skeleton oil seal: This component is the core seal of the shaft end, and usually uses a double-lip structure with dust-proof lips. The sealing principle is to rely on the spring ring that comes with the oil seal to tighten the journal, so that the lip of the oil seal closely fits the surface of the shaft, forming a contact sealing surface to prevent the lubricating oil in the box from leaking out. At the same time, the outer dust-proof lip can form secondary protection with the shaft surface, reducing external dust from entering the lip and avoiding lip wear; the grease applied on the lip not only reduces friction during rotation, but also further enhances the sealing effect. After wear, the lip can also achieve certain automatic compensation through the pre-tightening force of the spring. Read More

NGW - S73 - 2 - 71 As an NGW series planetary reducer, its base is mostly made of cast iron, Q345B low alloy steel and other materials. The welding quality directly affects the operation stability of the equipment. The specific precautions cover the whole process of pre-welding preparation, welding process and post-welding treatment, as follows: 1. Match the pre-welding preparation materials and welding materials: If the machine base is For HT250 cast iron, use Z308 pure nickel core welding rod; if it is Q345B low alloy steel, give priority to E5015 low hydrogen welding rod or ER50-6 Welding wire. Before using welding materials, low-hydrogen welding rods need to be baked at 350°C 2 Remove moisture every hour to prevent pores in the weld. At the same time, check the base material. Cast iron parts need to be cleaned of molding sand and oil stains, and low alloy steel needs to be confirmed to be free of defects such as rust and cracks. Beveling and assembly processing: plate thickness exceeds 20mm, use V-shaped or U-shaped slope Read More

The NGW-L82-56 planetary reducer base is mostly made of welded structures such as low carbon steel and low alloy high-strength steel. The quality of the welding material will affect the performance of the equipment from many aspects such as operating stability and load-bearing capacity. It will also determine the service life of the entire machine by causing failures and shortening the life of components. The specific effects are as follows: 1. Affecting the operating stability and inducing vibration and noise: If the welding material has many impurities and uneven composition, defects such as pores and slag inclusions are likely to occur during welding, causing the weld to be loosely bonded to the base material. The reducer will transmit during operation 11KW According to the torque corresponding to the power, defective parts will cause uneven support stiffness of the machine base, which will cause equipment vibration. At the same time, the vibration will be accompanied by abnormal noise, and as the operation time increases, the vibration amplitude will increase due to the expansion of defects, seriously damaging the operation stability. Destruction of transmission accuracy: High-quality welding materials can ensure that the dimensional accuracy and geometric tolerances of the machine base after welding are up to standard. If the welding material quality is poor, Read More

ZQ850 - 23.34 - IVZ belongs to the large ZQ series reducer. The trial operation must be carried out according to the process of pre-test inspection, staged test, exception handling and post-test closing to ensure the stability of the equipment operation. The specific precautions are as follows: 1. Comprehensive pre-inspection foundation and connection inspection before test run: Use an electronic level to check the levelness of the reducer. The axial deviation must be ≤0.02mm/m, and the radial deviation must be ≤0.05mm/m; use Use a 0.05mm feeler gauge to check the joint surface between the base and the foundation to ensure there is no continuous gap. Press Torque simultaneously - The angle method confirms that the anchor bolts have been tightened in place three times. The coupling needs to be tested with a laser alignment instrument to ensure that the radial deviation is ≤0.05mm and the angular deviation is ≤0.05mm/m. A thermal expansion gap needs to be reserved at the input and output shaft ends. Lubrication and sealing inspection: add the model specified by the manufacturer ISO VG220 or VG32 Read More

The noise levels of hard-tooth surface reducers and soft-tooth surface reducers cannot be generalized. There are differences between traditional ordinary models and technically optimized models. However, based on conventional working conditions and mainstream product characteristics, the overall noise of standard hard-tooth surface reducers is lower and more stable, while the noise of soft-tooth surface reducers is relatively low. High, and noise is prone to occur. The specific comparison is as follows: 1. Core noise difference under normal working conditions: the noise of hard-tooth surface reducer is generally lower and stable, with a normal range of 60-75dB; the noise of soft-tooth surface reducer is relatively high, with a normal range of 70-85dB, and is prone to clutter and noise. 2. The reason for the low noise of the hard-tooth surface reducer: the gear is hardened by carburizing and quenching, and is equipped with high-precision finishing such as gear grinding. The tooth shape is high in precision, the surface is smooth (roughness Ra ≤ 0.8 μm), the contact is uniform during meshing, and the impact is small. The noise frequency is concentrated at the gear meshing frequency and its harmonics. There is no obvious noise. The noise of some precision models can be as low as 60-67 Read More