Category: Gearboxes and reducers

The entire transmission mechanism of a planetary cycloidal pinwheel reducer can be divided into three parts: the input section, the reduction section, and the output section. When the input shaft rotates one revolution with the eccentric sleeve, due to the characteristics of the tooth profile curve of the cycloidal wheel and its restriction by the pin teeth of the pin gear, the motion of the cycloidal wheel becomes a planar motion that includes both revolution and rotation. When the input shaft rotates one revolution in the forward direction, the eccentric sleeve also rotates one revolution, and the cycloidal wheel rotates one tooth in the opposite direction, thus achieving speed reduction. Then, with the help of the W output mechanism, the low-speed rotational motion of the cycloidal wheel is transmitted to the output shaft through the pin, thereby obtaining a lower output speed. Next, let's discuss the installation steps of the cycloidal wheel in the cycloidal pinwheel reducer: First, check whether the two cycloidal wheels are a pair. Cycloidal wheels are manufactured in pairs, meaning that the two cycloidal wheels are not separated during the production process. During installation, a pair means that the two cycloidal wheels can completely overlap. This includes the bearing hole, the ten-hole (pin hole)...

Cycloidal pinwheel reducers are a common type of reducer used in many applications. Compared to other reducers, cycloidal pinwheel reducers have the following advantages: Small size and light weight: Cycloidal pinwheel reducers are favored by users due to their small size, compact structure, and light weight. High transmission ratio: Cycloidal pinwheel reducers have a high speed ratio, with a transmission ratio of 1:7 to 1:87 for single-stage reduction and 1:121 to 7569 for two-stage reduction. High transmission efficiency: Due to the rolling meshing of the gear teeth and the absence of relative sliding, the efficiency of cycloidal pinwheel reducers is generally above 90%. Easy disassembly and maintenance: The reasonable structural design of cycloidal pinwheel reducers facilitates simple disassembly and maintenance, uses fewer parts, and is very easy to lubricate. Long lifespan and low noise: Due to the planetary transmission principle, the cycloidal pinwheel reducer operates with a low noise level…

Smoke emitted by a speed reducer during operation is truly a headache. What causes this? Here's an analysis: 1. The ambient temperature is too high, exceeding 40℃, causing excessive heat in the speed reducer's intake air and making heat dissipation difficult. Cooling measures should be taken. 2. Damaged or excessively worn bearings cause the stator and rotor to rub against each other. Check for loose bearings and improper assembly of the stator and rotor. 3. Broken bars in the squirrel-cage rotor or loose coil connections in the wound rotor cause excessive current and overheating. Repair or replace copper bar rotors; replace cast aluminum rotors. 4. Incorrect winding connections, such as connecting a star configuration as a delta configuration or vice versa, will cause overheating under rated load. Check and correct these errors. 5. The internal fan of the speed reducer is damaged, installed backwards, or missing. Install it correctly, and repair or replace any damaged fans.

Just as cars need gasoline to run, cycloidal pinwheel reducers also need engine oil to operate. Engine oil plays a crucial role every time the reducer is used. Different cycloidal pinwheel reducers use different types of engine oil, and the type of engine oil used also varies depending on the temperature. So how do we use engine oil to ensure the smooth operation of the reducer? 1. For vertically installed planetary cycloidal pinwheel reducers, it is essential to prevent the oil pump from cutting off to avoid damage to the reducer's components. 2. To add oil, simply unscrew the vent cap on the top of the base. To drain oil, unscrew the drain plug at the bottom of the base to drain the contaminated oil. This cycloidal pinwheel reducer is shipped without internal lubricating oil. 3. Newly shipped cycloidal pinwheel reducers come with lubricating grease, which should be changed every six months. 4. Horizontal cycloidal pinwheel reducers normally use oil bath lubrication. The oil level should be maintained in the middle of the sight glass. During operation…

Screw jacks, also known as lead screw jacks, are widely used in machinery, construction, chemical, medical, and other healthcare industries. They can accurately control and adjust the lifting or pushing height according to a specific program. They can be directly driven by an electric motor or other power source, or manually. The internal structure consists of a worm gear and lead screw nut, using electric drive to achieve the lifting function. Below, we introduce some problems encountered during the use of screw jacks and their solutions to help users quickly troubleshoot. Worm gears wear quickly; worm gears are generally made of tin bronze. During normal operation, screw jacks wear very slowly; some screw jacks can last for more than 10 years. If the wear rate is too fast, consider whether the initial selection was correct, whether it was operating under overload, the material of the worm gear, assembly quality, and the operating environment. Worm bearing damage: When a worm gear bearing malfunctions, even if the gearbox is well-sealed, it is often found that the gear oil inside the screw jack is emulsified, and the bearing rusts and corrodes…

The following are key selection points for screw jack couplings based on various conditions. We hope this introduction will help you better understand this topic. Let's take a closer look: Point 1: High Precision: Rubber damping type, diaphragm type, slit type, bellows type, rigid coupling. Point 2: High Torque: Rubber damping type, diaphragm type, plum blossom type, cross slider type, rigid coupling. Point 3: High Torsional Rigidity: Rubber damping type, diaphragm type, cross joint type, rigid coupling. Point 4: Tolerance Adjustment: Cross slider type. Point 5: Vibration Damping: Rubber damping type, plum blossom type, cross joint type. Point 6: Electrical Insulation: Rubber damping type, plum blossom type, cross slider type. Point 7: High Motor Gain: Rubber damping type. Point 8: High Temperature Sensitivity: With rubber or engineering plastic materials, the maximum temperature should not exceed 120℃. Point 9: Low Axial Reaction Force: Cross slider type…

Screw jacks primarily function by driving a worm gear to rotate, thereby moving the screw up and down to achieve pushing, pulling, or lifting effects. There are two main types of screw jack rotation: Type 1: The screw rotates, and the nut moves. This type of transmission requires a guide device to restrict the rotation of the nut. Its advantages include a compact structure and good screw rigidity. It is suitable for applications with large strokes. Type 2: The nut is fixed, and the screw rotates and moves. In this type, the nut itself provides support, eliminating the additional axial movement that might occur with the screw bearings. It has a simpler structure and can achieve higher transmission accuracy. However, its axial dimension should not be too long, otherwise the rigidity will be poor. Therefore, it is only suitable for applications with small strokes.

Worm gear screw jacks are a commonly used type of mechanical lifting machine. Over time, noise in worm gear screw jacks is often caused by component malfunctions. Which components of a worm gear screw jack are prone to failure? Let's take a brief look: 1. Wear on the shaft surface, keyway wear, and shaft bending. 2. Wear at the bearing holes and thread failure in the screw holes. 3. Gear wear, mainly caused by tooth surface wear, tooth breakage, or wear on the gear shaft hole or keyway.

Today we'll analyze three key points to consider during the break-in period of a newly purchased worm gear screw jack. This is crucial for its long-term use. Here's a detailed explanation: Point 1: Choose the appropriate lubricating oil. For example, use light-load gear oil for 11KW jacks and medium-load gear oil for larger jacks. Regularly check the oil level and quality, and ensure proper sealing. Add grease periodically, paying attention to the rotation direction of different oil pump models; clockwise rotation is correct. Point 2: Keep the motor clean and secure components to prevent vibration from causing parts to fall off. Point 3: After the break-in period, change the oil promptly and regularly inspect and maintain the worm gear screw jack.

The installation and precautions for the fixed connecting parts of the screw jack are as follows: I. Assembly of Threaded Connections 1. Threaded connections must have appropriate tightening force. Important threaded connections bearing dynamic loads generally have preload requirements. During assembly, they must be tightened according to these requirements. Ordinary threaded connections without preload requirements should also have appropriate tightening force. 2. For grouped threaded connections, the bolts must be tightened in a specific order, gradually and in stages. This helps ensure uniform contact and good fit between the threads, and consistent load-bearing capacity between the bolts. 3. To prevent bolts from loosening due to vibration, threaded connections must have appropriate locking measures. 1) Add spring washers. 2) Lock with double nuts. 3) Lock with anti-reverse washers. 4) Secure with wire. 5) Lock with safety washers. 6) Lock with cotter pins. II. Assembly of Key-Pin Connections 1. In a key-pin connection, the working surface of the key is two…

With the mechanization transformation of various industries, transmission machinery has gradually been widely used, and screw jacks are one such type of transmission machinery that has benefited from this. Below, we will look at the functions and parameters of screw jacks: 1. Linear motion unit speed up to 16 inches/second (4.88 meters/second) 2. Stroke range: 2 – 22 feet (0.61 – 67.66 meters) 3. The above screw jack motion units are driven by ball screws or belts, with linear bearings using prismatic or ball bearing guideways. 4. Linear motion units can be equipped with stepper motors, servo motors, AC motors, or DC motors and complete control systems. 5. Load range: 80 – 12,500 pounds (356 – 55,625 N) 6. Designed for packaging, assembly, and material handling applications because screw jack motion units are modular, modular, and self-supporting…

Worm gear screw jacks are increasingly used in various industries due to their affordability, ease of installation, and flexible operation. Screw jacks utilize worm gear drives, which have excellent self-locking properties, maintaining load even without a braking device. The worm gear drive rotates the screw, and the worm gear, with its internal trapezoidal thread, works in conjunction with the screw. The rotation of the worm gear drives the screw to move axially, achieving both deceleration and lifting functions. Screw jacks can be combined into one or more units to form a working platform, with a single motor or handwheel driving other components to achieve synchronized and stable lifting operations. It is important to note that when selecting a drive system for screw jacks, whether it's two, four, or multiple units working in tandem, we recommend using a single motor whenever possible. This is because different motors have speed differences per minute, making it difficult to achieve synchronized and stable operation if multiple motors are used.

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 a safety factor, 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 a safety factor, operating stroke, and screw stability calibration…

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,…

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.

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…

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.

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…