The structural auxiliary measures of the CWS200-12.5-SZ worm gear reducer mainly include improving transmission accuracy, improving lubrication conditions, enhancing heat dissipation performance and ensuring sealing reliability, etc., aiming to improve the operating stability and service life of the equipment under complex working conditions. 1. Optimize tooth profile design and improve meshing performance. The CWS series adopts Niemann-type cylindrical worm transmission, and its core structural advantage is reflected in the precise matching of tooth profile shapes. ‌Arc tooth surface grinding processing‌: The worm is ground to significantly improve the tooth surface finish and geometric accuracy, and reduce the sliding friction coefficient during the meshing process. ‌Concave-concave tooth profile meshing mechanism‌: The worm has a convex surface and the worm gear has a concave surface, resulting in a larger contact area and more even stress distribution, effectively improving the load-bearing capacity and reducing local wear. ‌Increase the circumferential speed angle‌: This design is conducive to the formation of a stable hydrodynamic oil film, improves the lubrication state, and slows down fatigue failure of the tooth surface. 2. Strengthen the lubrication system to ensure Read More

The installation quality of the CWU280-20 worm gear reducer directly affects its transmission accuracy, operating stability and service life. ‌The core of correct installation is to ensure that the transmission is centered, firmly fixed, lubricated in place, and to avoid interference from external loads‌. The following are specific precautions, classified according to the installation process: 1. Pre-installation preparation: inspection and environmental confirmation Before formal assembly, basic inspection and environmental assessment need to be completed to eliminate potential risks. ‌Check the status of the reducer‌: Confirm that there is no damage during transportation, the output shaft rotates flexibly, and there is no jamming or abnormal noise. ‌Check matching dimensions‌: Measure the input shaft diameter, output shaft diameter, keyway size and tolerance to ensure matching with the prime mover (such as motor) and load-side coupling to avoid being too tight or too loose. ‌Confirm the installation position‌: Prioritize installation on a horizontal and stable foundation surface and avoid vertical installation; if vertical installation is necessary, lubrication management must be strengthened and oil leakage must be prevented. ‌Check ventilation and operating space‌: Confirm Read More

During the welding process of the NGW102-40 planetary reducer base made of cast iron, the key to determining whether the welding voltage and current is appropriate lies in the comprehensive evaluation of welding seam forming quality, arc stability, heat input control and post-weld inspection results. Since this type of machine base mostly uses gray cast iron materials such as HT250, which has poor weldability and is easy to crack, defects must be avoided through precise parameter matching. 1. Assisted judgment through arc status and operating experience = 1. Listen to the sound: When the current is moderate, the arc is stable and makes a continuous soft 'sizzling' sound; when the current is too large, the sound changes to a 'crackling' sound with loud splashing; when the current is too small, there is a 'crackling' arc breaking sound, and the arc is unstable. ‌2. Look at the spatter‌: Normal welding should have only a small amount of small spatter; if a large number of large particles of metal spatter appear, it means that the current is too large or the voltage does not match. ‌3. Feel feedback‌: The welding handle shakes violently, indicating that the arc is unstable, and the voltage may be too high or the current may be too high. Read More

When welding the NGW113-560 planetary reducer frame made of cast iron, the preheating temperature has a significant regulatory effect on heat input. Increasing the preheating temperature can effectively reduce the cooling rate and reduce heat input requirements, thereby inhibiting the formation of cracks. This is because cast iron has poor thermal conductivity and low plasticity. It is easy to produce thermal stress cracks due to large local temperature differences during the welding process. Therefore, reasonable preheating can improve the thermal field distribution and reduce reliance on high heat input. 1. How does the preheating temperature affect the heat input and cooling behavior? 1. Reduce the temperature gradient and slow down the cooling rate. When the iron casting is not preheated, the initial temperature of the base metal is close to room temperature (about 20°C), and the welding arc is instantly heated to more than 1200°C, forming a huge temperature gradient, resulting in rapid cooling of the weld area and easy formation of martensite and white structure. When preheating to ‌300~350℃‌, the entire base metal is in a high temperature state, and the cooling curve after welding is gentle, ‌1200℃→800℃ Read More

To avoid the negative impact of temperature changes on the sealing performance of the ZQD400-80-1 gear reducer, measures need to be formulated around the four core dimensions of seal Selection adaptation, structural optimization, temperature control, and maintenance specifications to form a full-cycle protection system, as follows: 1. Seals that accurately Selection adapt to temperature characteristics are preferably made of sealing materials that are resistant to high and low temperatures: the oil seal lip is made of fluorine rubber (FKM) Or hydrogenated nitrile butadiene rubber (HNBR), which can withstand a wide temperature range of -20°C to 150°C and avoid low-temperature hardening and high-temperature aging; the sealing pad uses a flexible graphite composite pad or a metal-coated pad to replace ordinary rubber pads to improve temperature resistance and sealing stability. Match the sealing structure corresponding to the temperature: under high-temperature working conditions, a double-lip oil seal with a dust lip + spring preload is used to enhance lip fit; under low-temperature working conditions, a lip-coated oil seal with a low friction coefficient is used to reduce friction damage during startup. 2. Optimize structural design to resist Read More

The relevant standards for the impact of temperature changes on the sealing performance of the ZQD650-65.54-3CA gear reducer are mainly divided into three categories: general standards for reducers, seal material and performance standards, and environmental test standards. The details are as follows: 1. General technical standards for reducers JB/T 9002-2010 'Cylinder Gear Reducer': stipulates the basic parameters, technical requirements, test methods, etc. of the cylindrical gear reducer, which clarifies the sealing performance requirements of the reducer under different temperature conditions. For example, there must be no oil leakage at the seal during operation, and the impact of thermal expansion and contraction caused by temperature changes on the sealing fit must be considered to ensure that the sealing structure design can adapt to temperature fluctuations. GB/T 10095.1-2008 'Cylinder Gear Precision Part 1: Definition and Allowable Value of Tooth Surface Deviation on the Same Side of Gear Teeth': Although it mainly focuses on gear accuracy, gear accuracy is directly related to shafting assembly accuracy, and the shafting is coaxial Read More