Tag: Speed Reducer

A ball screw jack consists of a screw, nut, steel balls, preload plates, a reversing device, and a dust cover. Its function is to convert rotary motion into linear motion, transforming the sliding action of a bearing into rolling action. Due to its very low frictional resistance, ball screws are widely used in various industrial equipment and precision instruments. Ball screws are the most commonly used transmission components in machine tools and precision machinery. Their main function is to convert rotary motion into linear motion, or to convert torque into axial reciprocating force, while also possessing high precision, reversibility, and high efficiency. 1. First, adjust to within the installation accuracy reference value. 2. When using the fixed-side support unit as a reference, adjust the outer diameter of the nut and the inner diameter of the worktable nut support to maintain a certain gap. 3. When using the worktable as a reference, for square support units, use thin shims to adjust the center height; for flange-type support units, adjust the outer diameter of the nut and the inner diameter of the worktable nut to maintain…

1. High reduction ratio and high efficiency: The reduction ratio of a single-stage transmission is 9~87, the reduction ratio of a double-stage transmission is 121~5133, and the reduction ratio of a multi-stage transmission can reach tens of thousands. Furthermore, the pin tooth meshing system uses rolling friction, with no relative sliding on the meshing surface, resulting in a single-stage reduction efficiency of 94%. 2. Smooth operation and low noise: The large number of teeth in simultaneous contact during operation and the high overlap result in smooth operation, strong overload capacity, and low vibration and noise. Various specifications of models exhibit low noise. 3. Reliable operation and long service life: Key components are made of high-carbon alloy steel, quenched (HRC58-62), and then precision ground. The cycloidal teeth mesh with the pin tooth sleeve, transmitting power to the pin teeth as a rolling friction pair, resulting in a low coefficient of friction and no relative sliding in the meshing area, minimizing wear and ensuring durability. 4. Compact structure and small size: Compared with other reducers of the same power, it is more than 1/3 smaller in weight and volume. Due to the planetary transmission, the input and output shafts are on the same…

The working principle of a ball screw jack is the same as that of a regular trapezoidal screw jack; both belong to the same type of linear motion machinery. The working principle of a ball screw jack is that the rotation of the worm gear causes the moving screw to move linearly, or the screw and worm gear are fixed, and the nut will convert the rotation angle of the screw into linear motion according to the corresponding lead. The driven workpiece can be connected to the nut seat to achieve the corresponding linear motion. Ball screw jacks are gradually being widely used in the industry. They are now suitable for high-speed, high-frequency, and high-performance devices. The main components of a ball screw jack are a precision ball screw pair and a high-precision worm gear pair. They are highly efficient, using ball friction to improve overall machine efficiency, requiring only a small drive source to generate a large driving force. Internal structure of a ball screw jack: 1. When selecting a ball screw jack, it is important to note that it should not be used under either static or dynamic loads…

Ball screws are the most commonly used transmission components in machine tools and precision machinery. A ball screw consists of a screw, nut, and balls. Its function is to convert rotary motion into linear motion, or to convert torque into axial reciprocating force, while also possessing high precision, reversibility, and high efficiency. This is a further extension and development of the ball screw, and the significant meaning of this development is that it changed the bearing's motion from rolling to sliding. Due to its very low frictional resistance, ball screws are widely used in various industrial equipment and precision instruments. 1. Compared with other products, ball screw jacks, in their design, utilize a ball screw with a driving torque of 1/3, where many balls roll between the screw shaft and the nut, resulting in higher motion efficiency. Compared to the past sliding screw pairs, the driving torque is reduced to less than 1/3, meaning that the power required to achieve the same motion result is only 1/3 of that required using a rolling screw pair. This also saves energy…

The method for installing balls in the ball screw nut of a ball screw jack: First, it is not recommended for users to disassemble and install the nut themselves, especially for high-lead ball screws. If the nut has accidentally come off or you have already disassembled it, reinstall the nut as follows: Machine a hollow sleeve with an outer diameter slightly smaller than the bottom diameter of the screw raceway (about 0.1mm smaller), an inner diameter slightly larger than the outer diameter of the screw end (0.5~2mm larger), and a length longer than the nut (10~50mm longer). Plug one end of the hollow sleeve with a soft material such as foam packaging, insert it into the clean, ball-free nut, and then install the cleaned balls one by one into each circulation groove, filling one revolution (the gap should be 0.5~1.5 ball diameters). Gently rotate the hollow sleeve to ensure smooth operation before pushing it to the next revolution until it is completely filled. Then remove the plugging material, and connect the hollow sleeve to the nut…

The characteristics of a worm gear screw jack transmission: The transmission consists of a worm and a worm wheel, used to transmit motion and power between intersecting shafts. Typically, the intersection angle between the two shafts is 90°. In general worm gear drives, the worm is the driving element. The section of the worm gear screw jack's meshing transmission passing through the worm axis and perpendicular to the worm wheel axis shows: 1. The meshing of the worm and worm wheel in the main section is the meshing of an involute rack and gear. 2. The involute rack and gear meshing in the worm gear screw jack, regardless of the shape of the meshing tooth profile, results in a smooth worm gear drive with low vibration and noise and high load-bearing capacity. 3. The worm gear screw jack has basic parameters: module and pressure angle. 4. Worm gear drives can achieve a large transmission ratio because the worm has fewer teeth, while the worm wheel can have many teeth.

Screw jacks, as functional components, are widely used in various industries, such as: actuators for CNC equipment, locomotive maintenance lifting platforms, roll adjustment devices in the metallurgical industry, ladle lifting and tilting devices in steel plants, and motion transmission devices in places inaccessible to humans; vehicle lifting frames in the railway vehicle industry; large flexible clamping and indexing fixtures; welding robots; mobile equipment and combined formwork in the construction industry; automatic or remote-controlled opening devices for large doors and windows; gate opening devices in water conservancy and other industries; adjusting the ground height of swimming pools; radar and solar remote sensing devices; adjusting the height of operating tables in medical devices; lifting stages; lifting devices in the automotive manufacturing industry; and transmission devices in aerospace, national defense, and military applications, etc. Reasons why a screw jack may fail to lift or have weak lifting force include: 1. The overflow valve pressure adjustment is not up to standard; adjust the pressure to the required value. 2. Internal leakage in the hydraulic cylinder; check or replace the hydraulic cylinder components. 3. Reversing…

The screw and nut drive in a screw jack is one of the most common mechanisms for achieving linear motion. It's difficult to achieve a zero-backlash fit between the screw and nut. Especially after a period of use, wear will increase the backlash, affecting the normal operation of the equipment. Therefore, it is essential to eliminate the backlash between the screw and nut during equipment maintenance. Displacement compensation is often used for error compensation in single-item precision. 1. Compensation for axial runout of 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 its highest point. Finally, shift the highest point of the bearing positioning end face to align with the lowest point of the thrust bearing end face circular runout, thus reducing the axial runout error. 2. Compensation for radial runout of a screw jack: For parts assembled on the shaft, such as gears and worm gears, the radial runout should be measured first…

What are the inspection methods for screw jacks? During prolonged use of screw jacks, some malfunctions are inevitable. Don't panic! Troubleshooting and improvement 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: Method 1: The overflow valve pressure adjustment is not meeting requirements; adjust the pressure to the required value. Method 2: The oil supply pump is faulty. Method 3: The oil level is too low, or the inlet oil filter is blocked. Method 4: Internal leakage in the screw jack cylinder; see the troubleshooting methods in items 2, 3, 4, and 5 above. Method 5: The directional valve is stuck or leaking internally. Method 6: The check valve is leaking; check the check valve core and valve…

The worm gear has an internal thread structure, acting as the nut for the screw jack and matching it. The lifting speed equals the worm's input speed divided by the reduction ratio of the worm gear and worm, then multiplied by the screw pitch. Due to its structure, this type of screw jack generally uses grease lubrication, with some series using oil lubrication, offering advantages such as longer lifespan and more stable operation. The worm gear screw jack utilizes the worm gear and worm to achieve speed reduction. Worm gear screw jacks are generally used in low-speed, high-torque transmission equipment. They reduce the speed of a motor, internal combustion engine, or other high-speed power source by meshing a smaller gear on the input shaft with a larger gear on the output shaft. Ordinary screw jacks may also have several pairs of gears operating on the same principle to achieve the desired speed reduction. The ratio of the number of teeth on the large and small gears is the transmission ratio. A screw jack consists of various gear pairs…

Cycloidal gear reducers are commonly used in many applications. Compared with other reducers, the advantages of cycloidal pinwheel reducers are mainly reflected in the following aspects: Small size and light weight: Cycloidal pinwheel reducers are small in size, compact in structure, and lightweight, making them popular with users. High transmission ratio: Cycloidal pinwheel reducers have a higher speed ratio; the transmission ratio is high for the first reduction stage and high for two-stage reduction. High transmission efficiency: Due to the use of rolling meshing gear teeth, there is no relative sliding on the meshing surfaces, and the overall efficiency can reach over 90%. Easy assembly and disassembly, easy repair: Due to the reasonable structural design, cycloidal reducers are easy to assemble and disassemble, easy to maintain, have few parts, and are easy to lubricate. Long service life and low noise: Based on the principle of planetary gears, the number of teeth biting, the large overlap coefficient, and the overall balance of the body is achieved by grinding the bearing steel after quenching…

Lubrication of cycloidal reducers (1) Lubricating oil must be injected into this cycloidal pinwheel reducer before use. Reducers sold are generally not lubricated for ease of loading, unloading and transportation. (2) For convenience of customers, our Tingxing reducers using grease lubrication are all lubricated with grease before sale. (3) For general-purpose cycloidal pinwheel reducers, 40# to 50# ordinary mechanical oil is generally sufficient at room temperature. In order to improve product performance and extend the service life of the reducer, high viscosity (concentration) gear oil should not be used for reducers of B4 and above (including B4). Gear oil is prone to generating stirring heat inside the reducer, accelerating the high temperature of the reducer, which is detrimental to the reducer. (4) When the reducer is working under harsh working conditions, frequent start-stop and high temperature or low temperature, the lubricating oil should be reconsidered. (5) When the reducer is lubricated with grease, it is recommended to use special lubricating oil...

I. Installation 1. Cylindrical gear reducers generally need to be installed on a horizontal surface with an inclination not exceeding 10°. If a greater than 10° inclination is required due to special needs, please contact our company before use to discuss the relevant matters. 2. When connecting the input and output shafts to the power source and supporting machinery, if a coupling is used, the shafts must be strictly aligned and there should be no misalignment. V-belts and chains should not be too tight or too loose. 3. The installation foundation should be firm and reliable, free from vibration and looseness. Fixing screws should be selected strictly according to relevant standards and regulations. 4. The installation screws should be checked periodically to ensure they are tightened securely. Spring washers should be used whenever possible. II. Lubrication 1. Gear reducers generally use oil bath lubrication. Before use, ensure that medium-pressure gear oil N220 or N320 is added to the specified level (20-30mm above the lowest tooth), and replenish it periodically. 2. For initial use, 50 hours…

The cycloidal pinwheel reducer's transmission mechanism can be divided into three parts: input, reduction, and output. A double eccentric sleeve with a 180° offset is mounted on the input shaft. Two roller bearings, called swing arms, are mounted on the eccentric sleeve, forming an H-mechanism. The central holes of the two cycloidal wheels serve as the raceways for the swing arm bearings on the eccentric sleeve. The cycloidal wheels mesh with a set of annularly arranged pin teeth on the pin gear, forming an internal meshing reduction mechanism with a one-tooth tooth difference. (To reduce friction, in reducers with small speed ratios, the pin teeth are fitted with pin tooth sleeves). When the input shaft rotates one revolution with the eccentric sleeve, due to the characteristics of the cycloidal wheel's tooth profile and its restriction by the pin teeth on the pin gear, the cycloidal wheel's motion becomes a planar motion involving both revolution and rotation. During a forward revolution of the input shaft, the eccentric sleeve also rotates one revolution, and the cycloidal wheel rotates one tooth in the opposite direction, thus achieving reduction. Then, with the aid of the W-output mechanism, the low-speed rotational motion of the cycloidal wheel is transmitted through a pin shaft…

Screw jacks hold a significant position in the lifting platform industry and are among the most popular lifting platform products on the market. Our professionals will now explain more about screw jacks to you, hoping this information will be helpful. 1. Self-locking performance: Due to its internal structure using worm gears and trapezoidal screws for active transmission, the screw jack possesses self-locking properties, ensuring the equipment's reliability and safety. 2. Mechanical synchronization: A single motor can drive 2, 4, 6, 8, 12, or 20 screw jacks to achieve rigid synchronization with a synchronization accuracy of 0.1mm. 3. Position control: Synchronous servo motors or encoders can control the position with an accuracy of 0.1mm. 4. Simple maintenance, low noise, and environmentally friendly operation: Screw jacks are easy to maintain and operate with low noise.

When selecting a screw jack, it's crucial to match the screw shaft speed with the load it will bear. Furthermore, the 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. Whether under static, dynamic, or impact loads, the screw jack's allowable load capacity must be maintained. A jack with sufficient capacity should be selected based on a safety factor, operating stroke, and screw stability calibration. During operation, the surface temperature of the 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. When purchasing an SWL screw jack, the load capacity must be considered. The selected jack must not exceed its allowable load capacity under static, dynamic, or impact loads. A jack with sufficient capacity should be selected based on a safety factor, operating stroke, and screw stability calibration…

SWL series worm gear screw jacks are widely used in industries such as machinery, metallurgy, construction, and water conservancy equipment. They offer numerous functions including lifting, lowering, and, with the aid of auxiliary components, propulsion, tilting, and various height adjustments. As a basic lifting component, the SWL worm gear screw jack boasts advantages such as compact structure, small size, light weight, wide range of power sources, noiseless operation, easy installation, flexible use, multiple functions, numerous compatible combinations, high reliability, and long service life. It can be used individually or in combination, accurately controlling and adjusting the lifting or propulsion height according to a specific program. It can be directly driven by an electric motor or other power source, or manually operated. As a functional component, the worm gear screw jack has been widely applied in various industries. Examples include: transmission devices and CNC actuators in the machinery industry; rolling mill motion devices, ladle lifting and tilting devices in steel mills, and motion transmission devices in inaccessible locations; and rolling stock in the railway vehicle industry…

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.