During prolonged use of screw jacks, some malfunctions are inevitable. In such cases, do not panic. Troubleshooting and repair should be carried out in the presence of professional technicians to ensure normal work efficiency. Today, we will introduce some countermeasures for screw jacks that encounter problems such as inability to lift or weak lifting force during application, as follows: Solution 1: The overflow valve pressure adjustment is not meeting requirements; adjust the pressure to the required value. Solution 2: The oil supply pump is malfunctioning. Solution 3: The oil level is too low, or the inlet oil filter is blocked. Solution 4: Internal leakage in the screw jack cylinder; see the troubleshooting methods in items 2, 3, 4, and 5 above. Solution 5: The directional valve is stuck or has internal leakage. Solution 6: The check valve is leaking; check the wear and tear of the check valve core and seat, and whether the check valve spring is fatigued or deformed.

Screw jacks (spiral jacks) have a wide range of applications. They are simple in structure, highly reliable, have a long service life, and an extremely low repair rate, gaining increasing recognition from customers. Screw jacks are self-locking, capable of self-locking even under load without requiring additional braking measures. They can be manually or electrically driven, characteristics that make them suitable for various working conditions. Internally, screw jacks utilize a worm gear structure, a common mechanism for achieving linear motion. During operation, the worm drives the worm wheel, and the internal threads of the worm wheel drive the screw in linear motion. Our company uses only the highest quality materials and components in our screw jacks to ensure a long service life and high efficiency even under harsh conditions. Furthermore, the sealed housing allows the worm gear structure to operate for extended periods in a clean environment. Due to wear between the worm gear and worm,…

A screw jack consists of a worm gear, worm, housing, flat bearing, tapered bearing, and oil seal. For worm gear screw jacks, the worm shaft speed should not exceed 1000 min/s. For high-speed screw jacks, use reputable brand-name lubricating oil. Screw jacks are suitable for low-speed, low-frequency applications. Under normal operating conditions, the maximum temperature should not exceed 45°C. Overheating may be caused by an undersized jack leading to overload, excessively tight fitting of the worm gear and worm end caps, or excessively high input speed causing overheating and seizing. The solutions are simple: reduce the speed, check the end caps, and check the lubricating oil; if low, replenish it promptly.

When choosing a screw jack, thorough market research is essential. This market is highly competitive with numerous brands, and not all brands are suitable for every customer. While this is a promising industry, many brands vie for a share, leading to some degree of uncertainty in the market. Therefore, consumers must exercise caution when making their selections. Choosing the most suitable screw jack will ensure better efficiency and improve your work performance. Firstly, avoid impulsive purchases. Conduct thorough market research and on-site inspections to determine the company's size and reputation. This is crucial. Many small businesses cut corners to maximize profits, resulting in significantly lower-quality screw jacks that they sell at very low prices…

1. The maximum allowable power is a parameter under conditions of an ambient temperature of 20℃ and a duty cycle of 20% per hour. 2. The overall efficiency is a parameter under grease lubrication conditions. 3. The allowable torque, power, and speed vary when lifting different loads, and the maximum power varies with different duty cycles. 4. For jacks with double guide sleeves, the screw is allowed to withstand a certain amount of lateral force in addition to axial force. 5. The worm gear shaft extension is allowed to withstand a certain amount of radial force and is permitted to be fitted with gears, sprockets, or pulleys. 6. Worm gear screw jacks are generally self-locking when stationary.

Model SWL5 Maximum Lifting Force kN 50 Maximum Pulling Force kN 50 Worm Gear Ratio (P) 6:1 Worm Stroke per Revolution mm 1.167 Worm Gear Ratio (M) 24:1 Worm Stroke per Revolution mm 0.292 Worm Torque N·m Maximum Screw Elongation under Tensile Load mm 2000 Maximum Screw Elongation under Pressure Load mm Maximum Screw Elongation under Lateral Load mm Maximum Allowable Power kW 1.1 General Ratio (P) Total Efficiency % 21 Slow Ratio (M) Total Efficiency % 12 Lubricating Oil Quantity kg 0.25 Weight without Stroke kg 16.2 Weight per 100mm of Screw kg 0.82 Note: 1. Maximum allowable power is a parameter under the conditions of ambient temperature of 20℃ and duty cycle of 20%/h. 2. Overall efficiency is a parameter under grease lubrication conditions. 3. Working…

Error Correction Method 1. Correction of Axial Movement in a Screw Jack: First, measure the perpendicularity error and direction of the bearing positioning end face on the main shaft to the main shaft centerline. Then, measure the circular runout error of the thrust bearing end face and the position of its highest point. Finally, shift the highest point of the bearing positioning end face so that it aligns with the lowest point of the thrust bearing end face circular runout. This will reduce the amount of axial movement error. Error correction is an adjustment method that uses proper assembly of parts to create a certain degree of mutual cancellation of errors, thereby ensuring the accuracy of the equipment's movement trajectory. In mechanical equipment maintenance, commonly used error correction methods include displacement correction and comprehensive correction.

Screw jack spindle maintenance: To reduce bearing operating temperature, lubrication is commonly used. Lubrication methods include oil-air lubrication and oil circulation lubrication. When using these methods, the following points should be noted: 1. When using oil circulation lubrication, ensure the oil level in the spindle's thermostatic oil tank is sufficient. 2. Oil-air lubrication is the opposite of oil circulation lubrication; the screw jack only needs to fill the bearing space to about 100% capacity. The advantage of circulation lubrication is that, while ensuring adequate lubrication, it reduces frictional heat and absorbs some of the heat from the screw jack components.

Worm Gear Screw Jack - What are the effects of temperature rise on ball screws? When a ball screw is running, the temperature rise will affect the accuracy of the mechanical transmission system, especially high-speed and high-precision machinery. The following are the factors that affect the temperature rise of the ball screw. The factors that affect the temperature rise are basically these three: (1) The effect of preload of the screw jack: In order to avoid any loss of synchronization in the mechanical transmission system, it is important to improve the rigidity of the nut. However, to improve the rigidity of the nut, the preload of the nut must reach a certain level. Applying preload to the nut will increase the friction torque of the screw threads and increase the temperature rise during operation. HIWIN recommends that the preload of medium-heavy is 8% dynamic load; medium preload is 6%～8%; medium-light preload is 4%～6%; light preload is below 4%. The preload should not exceed 10% dynamic load to obtain the best service life and lower temperature rise effect. (2) The effect of lubrication of the screw jack: The choice of lubricating oil directly affects the accuracy of the mechanical transmission system, especially high-speed and high-precision machinery.

Ball screw jack backlash control: The ball screw, a crucial component of the ball screw jack, requires a working environment of ±20℃ during machining. Screw jack machining process specifications: 1. Unstable machining dimensions: Machining dimensions may be either too large or too small under normal parameters, and may vary depending on the location of the screw jack. 2. Surface roughness requirements: Left-right and up-down swaying of the screw jack is prohibited. 3. Machining right-angle arcs on the screw jack. 4. Tapering is prohibited when drilling and milling pin holes on a worm gear screw jack.