When selecting a screw jack, it is crucial to ensure the screw shaft speed is matched to the load. Furthermore, the maximum allowable load, allowable external load, and allowable screw shaft rotation speed of the screw jack must be verified. Exceeding these specifications will severely damage the entire lifting equipment. For worm gear screw jacks, whether under static, dynamic, or impact loads, the maximum allowable load must not be exceeded. A jack with sufficient capacity must be selected based on the coefficient, operating stroke, and screw stability calibration. During operation, the surface temperature of the screw jack's reduction gear should be controlled within the range of -15°C to 80°C, ensuring the surface temperature of the moving nut also falls within this range. The load capacity of the screw jack must be considered. When selecting a screw jack, whether under static, dynamic, or impact loads, the maximum allowable load must not be exceeded. A jack with sufficient capacity must be selected based on the coefficient, operating stroke, and screw stability calibration. Determine the lifting capacity…

Yongtengxiang Transmission Co., Ltd., as a well-known manufacturer specializing in screw jacks, boasts advanced production equipment and strong technical capabilities. To help you understand our products, our professionals will now explain them to you. We hope this information will be helpful. When a screw jack heats up, the thermal stress effect causes the screw to elongate, making its length unstable. This elongation can be calculated using the M40 formula, and it can be compensated for by pre-tensioning; the target value for pre-tension compensation is the negative T value. Excessive pre-tensioning can burn out the support bearings, so a pre-tension value of less than 5°C is recommended. However, pre-tensioning is not suitable if the screw diameter exceeds 50mm; a larger screw diameter requires a larger pre-tension force, which can lead to overheating and burnout of the support bearings. It is recommended to use a temperature rise of approximately 3°C as the benchmark for the compensation value T. Screw jacks include trapezoidal worm gear screw jacks and ball worm gear screw jacks…

A worm gear reducer is a power transmission mechanism that uses a gear speed converter to reduce the rotational speed of a motor to a desired speed and obtain a larger torque. Next, we'll discuss how to handle worm gear reducers, hoping this will be helpful. The worm wheel is generally made of tin bronze. During normal operation, the worm acts like a hardened "file," constantly grinding against the worm wheel, causing wear. Generally, this wear is slow; some reducers from certain manufacturers can last for over 10 years. If the wear rate is faster, consider whether the reducer selection is correct, whether it's being overloaded, the material of the worm wheel, assembly quality, or the operating environment. This often occurs in vertically mounted reducers, mainly related to the amount and type of lubricating oil. In vertical installations, insufficient lubricating oil is easily caused. When the reducer stops running, the transmission between the motor and the reducer…

As a traditional transmission device, the worm gear reducer contains a worm gear with involute teeth. Many worm gear reducer users have very little understanding of them, let alone the analysis of common problems. Below, we'll discuss some solutions for worm gear reducer malfunctions. When disassembling and installing reducer components, avoid using hammers or other tools to strike them. When replacing gears or worm gears, use original parts and replace them in pairs whenever possible. Pay attention to tolerances when assembling the output shaft. Use anti-sticking compound or red lead oil to protect the hollow shaft and prevent wear, rust, or scale buildup on the mating surfaces, which can make disassembly difficult during maintenance. If space permits, avoid vertical installation. Vertical installation requires significantly more lubricating oil than horizontal installation, which can easily cause overheating and oil leaks.

The QWL worm gear screw jack is widely used in industries such as machinery, metallurgy, construction, and water conservancy equipment. It features lifting, lowering, and, with the aid of auxiliary components, propulsion, tilting, and various height adjustments. The QWL worm gear screw jack is a basic lifting component with many advantages, including compact structure, small size, light weight, wide range of power sources, no noise, easy installation, flexible use, multiple functions, various matching options, high reliability, and long service life. Features: 1. The lifting height of the worm gear screw jack can increase as the pressure load decreases. 2. The allowable torque, power, and speed of the worm gear screw jack vary depending on the load being lifted, and the maximum power also varies depending on the duty cycle. 3. The operating temperature range of the worm gear screw jack is -20℃ to +80℃.

Before installation, confirm that the motor and worm gear reducer are intact and undamaged. Strictly check the dimensions of all connecting parts between the motor and worm gear reducer to ensure they match. This includes the dimensions and tolerances of the motor's positioning boss, input shaft, and worm gear reducer's groove. The first step is to unscrew the screws on the dustproof hole on the outside of the worm gear reducer flange, adjust the PCS system clamping ring so that its side hole aligns with the dustproof hole, and insert and tighten the Allen wrench. Afterward, remove the motor shaft key. Then, naturally connect the motor and worm gear reducer. During connection, ensure that the reducer's output shaft and the motor's input shaft are concentric and that their outer flanges are parallel. Inconsistent concentricity can lead to motor shaft breakage or worm gear reducer gear wear.

Screw jacks are a common type of lifting component. Compared to other worm gear jacks, screw jacks have many advantages, including a more compact structure, convenient installation, small size, diverse input methods, high reliability, and long service life. However, sometimes screw jacks experience weak lifting force. What are the reasons for this? Reason 1: The pressure adjustment of the screw jack's overflow valve does not meet the relevant requirements. Adjusting it to the required pressure value will prevent the problem. Reason 2: Internal leakage in the hydraulic cylinder is a direct cause. To avoid this, the hydraulic cylinder assembly of the screw jack needs to be inspected or replaced. Reason 3: The reversing valve of the equipment is stuck or has internal leakage. The valve assembly needs to be inspected or replaced.

This phenomenon generally occurs in the vertical device reducer, mainly with the increase in the amount of smooth oil and oil type. Vertical device, it is easy to form a lack of smooth oil, reducer stop working, the motor and reducer transmission gear oil between the loss of gears do not get due to the smooth maintenance. When the reducer starts, the gears are not useful for lubrication, resulting in mechanical wear and even damage. How should we deal with it: the selection of the reducer device orientation. Under the circumstances of the bearing promise, try not to use vertical device. Vertical device, the increase in the amount of smooth oil is much more than the horizontal device, easy to form the reducer heat and oil leakage.

1. The high-speed shaft of the worm gear screw jack can operate in both forward and reverse directions, but its speed must not exceed 1500 rpm. 2. The operating ambient temperature of the worm gear screw jack is 0℃-40℃. When the ambient temperature is below 0℃, the lubricating oil must be preheated to 0℃ before starting. 3. The axes of the high-speed and low-speed shafts of the worm gear screw jack must be concentric with the axes of the connecting parts, and the misalignment must not exceed the allowable value of the coupling used. 4. Before the jack is officially used after installation, a load test must be performed. The load test should begin with no-load operation, and loading should begin only after no faults are found. The load test is divided into the following four stages: Stage 1 load is 25% of the rated load. Stage 2 load is 50% of the rated load. Stage 3 load is 75% of the rated load. Stage 4 load is 100% of the rated load. The oil temperature during each stage of operation must not exceed 80℃. If it does, the machine should be stopped immediately for inspection and…

1. Compared with other products, ball screw jacks, in their design, utilize a ball screw with a driving torque of 1/3. The numerous rolling balls between the screw shaft and nut result in higher motion efficiency. Compared to traditional sliding screw pairs, the driving torque is reduced to less than 1/3, meaning the power required to achieve the same motion effect is only 1/3 of that required by using a rolling screw pair. This significantly contributes to energy savings. 2. Zero backlash and high rigidity: Ball screws can be preloaded, and this preload can reduce axial backlash to a negative value, thus achieving higher rigidity. By applying pressure to the balls within the ball screw, the repulsive force of the balls enhances the rigidity of the nut when used in mechanical equipment. 3. High-speed feed capability: Due to their high motion efficiency and low heat generation, ball screws can achieve high-speed feed (motion).