1. Optimization of lubrication system Low temperature will cause ordinary lubricating oil to solidify or have excessive viscosity, increase starting resistance or even burn the motor. Replace special lubricating oil/grease: synthetic lubricating oil or low-temperature grease with low viscosity and good frost resistance must be used. Its pour point (the lowest temperature at which oil can flow) should be lower than the lowest local temperature. For example, in extreme environments of -40°C, low-temperature grease resistant to -55°C needs to be used. Preheating before starting: Before starting the equipment, electric heaters and other devices can be used to preheat the reducer oil tank or shell to increase the lubricating oil temperature to about 0-10°C to reduce viscosity and start-up resistance. 2. Standard startup and operating procedures Improper startup methods are common causes of equipment damage at low temperatures. Manual cranking inspection: Before starting, be sure to manually crank the motor coupling or input shaft to check whether there is any jamming caused by frozen components or poor lubrication. No-load warm-up operation: Before formal loading, let the Read More

1. Core low-temperature hazards ‌lubrication failure‌: Grease viscosity increases sharply at low temperatures, fluidity becomes poor, and oil film rupture and dry friction and wear are prone to occur. ‌Material embrittlement‌: The low-temperature toughness of ordinary bearing steel decreases, and micro-cracks are prone to occur under start-stop impacts, and even the rolling elements are broken. ‌Stuck and locked‌: Different metal materials have different low-temperature shrinkage rates, which can easily lead to smaller bearing clearances and sticking. ‌Rust and Freeze‌: Water vapor condenses and freezes inside the cavity, which will directly corrode the bearing raceway and increase component loss. 2. Key protection measures ‌ 1. Lubrication adaptation ‌ Use low-temperature lithium-based grease with PAO base oil, which can still maintain fluidity at -40°C and low-temperature torque ≤ 3000mN·m. The oxidation rate of grease slows down at low temperatures, but the inspection cycle needs to be shortened by 30% compared with normal temperature to prevent the grease from hardening and clumping. 2‌. Material and clearance optimization‌ Prioritize the use of high-nickel-chromium bearing steel (such as AISI 440C), -40℃ impact toughness than P Read More

1. Preparation and implementation before idle storage 1. Comprehensive inspection and cleaning: Before shutting down, conduct a comprehensive inspection of the reducer and sizing machine, clean the oil stains, flying particles and other debris on the surface and inside of the machine, and ensure that the surroundings of the heat sink, cooling fan and respirator are clean and free of blockage. 2. Lubricating system treatment: Drain the old lubricating oil inside the reducer, and use special cleaning agent to carefully flush the inside of the gear box. After cleaning, apply a thick layer of anti-rust grease (such as Vaseline or special anti-rust grease) on the exposed metal surface (such as the shaft extension end) to prevent rust. 3. Sealing and protection: Check and confirm the condition of the oil seal. If stored for 4-6 months, the oil seal lip may stick to the shaft or lose elasticity. It is recommended to replace the oil seal directly. Make sure the vents are not covered by paint, and use anti-rust primer and topcoat to repair any damage to the paint film on the housing. 4. Storage environment control: Store the reducer in a dry, well-ventilated place away from direct sunlight. Control environmental temperature and humidity Read More

Mainly reflected in the following aspects: 1. Tension control imbalance, causing physical damage to the yarn. The speed ratio of the reducer directly determines the output torque and speed of the motor. If the speed ratio matching is unreasonable, it will lead to deviations in the tension control during the weaving beam winding or pulling process. Excessive tension: It will cause the warp yarn to be over-stretched during unwinding, dipping or winding, resulting in excessive yarn elongation, damaged yarn strength, and increased end-breakage rate in subsequent weaving processes. Tension is too small or unstable: it will cause the yarn to relax and not be wound tightly, and even the yarns will shift, twist, and cluster due to insufficient tension during splitting, resulting in serious defects such as bundling and inversion. 2. The tension between the wet zone and the dry zone is out of balance, aggravating hairiness and breakage. The sizing process is divided into a wet zone and a dry zone, and each zone has different tension requirements. If the speed ratio of the reducer cannot accurately match the transmission of each process section, this balance will be destroyed. Excessive tension in the wet area: Yarns are prone to plastic elongation under high temperature and wet conditions. Read More

1. Traditional listening and appearance preliminary judgment methods: When the equipment is running or has just stopped, preliminary fault location can be carried out through the senses: 1. Screwdriver listening method: After stopping, put the screwdriver tip against different parts of the reducer casing and put your ear close to the screwdriver handle to listen. If the upper part of the gear box is loud, the gear needs to be inspected; if the bearing seat is loud, the bearings need to be checked; if the whole vibrates evenly, the installation or resonance needs to be checked. 2. Abnormal sound identification: Continuous 'buzzing' sound: mostly caused by gear wear, tooth surface gluing or excessive clearance. Sharp 'squeaking' sound or 'rustling' sound: It is most likely that the bearing is short of oil and the raceway or rolling element is worn. Intermittent 'clang' banging sound: It may be that the gear teeth are broken or the connecting parts (bolts, key pins) are loose, and the machine needs to be stopped immediately. 'Gurgling' sound: Insufficient lubricating oil or deterioration of oil quality leads to dry friction. 2. The vibration and spectrum analysis positioning method uses professional instruments such as vibration pens and spectrum analyzers for digital diagnosis: 1. Read More

1. Preparation and external inspection before disassembly. Before formal disassembly, it is necessary to cut off the power supply and wait for the reducer to cool to room temperature. Observe the appearance of the reducer, check whether there are cracks and deformations in the casing, whether the connection parts are loose, and whether there are traces of oil leakage in the casing seams, shaft extension end or oil drain port. 2. The key operations during the disassembly process are oil draining and cleaning: place an oil catch basin at the bottom, unscrew the oil drain plug and drain the gear oil. If you plan to reuse it, you need to filter impurities first and clean the oil near the oil drain port. Open the cover smoothly: Loosen and remove the fixing bolts of the upper cover (or side cover) in diagonal order. Use a jack screw or a copper rod to gently separate the upper cover and the base. Violent prying is strictly prohibited to avoid deformation of the joint surface and subsequent oil leakage. Position marking: Before taking out the transmission components, be sure to carefully observe and mark the meshing positions of the driving wheel, driven wheel and worm gear to provide a basis for subsequent accurate reassembly. Standard Disassembly: Use a puller or special tool to disassemble the bearing and Read More