Category: Gearboxes and reducers

Summary: Six Key Features of Cycloidal Pinwheel Reducers Cycloidal pinwheel reducers are widely used in industries such as petroleum, environmental protection, chemical, cement, conveying, textile, pharmaceutical, food, printing, hoisting, mining, metallurgy, construction, and power generation. Below are six key features of cycloidal pinwheel reducers: 1. High Transmission Ratio: Cycloidal pinwheel reducers have higher speed ratios. For single-stage reduction, the transmission ratio is 1:7 to 1:87; for two-stage reduction, the ratio is 1:121 to 7569. Even higher three-stage reduction is available, allowing customers to choose according to their needs. 2. 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%. 3. Easy Maintenance: Models below #/6125 use high-grade grease that does not require maintenance. 4. Small Size and Light Weight…

The four main series of gear reducers—R-series, K-series, F-series, and S-series—are the most commonly used. They have a long history of application and a wide range of uses, holding a crucial position in the gear reducer industry. Below, we'll explain the connection methods between these four series of gear reducers and motors: Generally, customers purchasing these four series of gear reducers will also purchase the motors together. In this case, production typically involves a direct connection between the motor and the reducer. The reducer interface is a standard interface, while the motor interface is made to a non-standard size according to the reducer standard (standard motor sizes cannot be directly connected to the reducer), and then they are directly connected and assembled. Another option is to keep the motor unchanged and add a motor flange to connect it to the reducer. This is generally used when customers have special requirements and order non-standard products. It is recommended to use a direct connection whenever possible, as it is generally more stable than a flange connection.

1. Improved Vent Cap and Inspection Hole Cover: One of the main causes of oil leakage is that the internal pressure of the reducer is greater than the external atmospheric pressure. If the internal and external pressures are balanced, oil leakage can be prevented. Although reducers have vent caps, the vent holes are too small and easily clogged by coal dust and oil. Furthermore, each time oil is added, the inspection hole cover must be opened, increasing the possibility of leakage and causing leaks in previously leak-free areas. Therefore, an oil cup-type vent cap was manufactured, and the original thin inspection hole cover was changed to 6 mm thick. The oil cup-type vent cap was welded to the cover plate, with a 6 mm diameter vent hole for easy ventilation and pressure equalization. Moreover, oil is added from the oil cup without opening the inspection hole cover, reducing the chance of leakage. 2. Smooth Flow: To prevent excess lubricating oil thrown onto the bearings by the gears from accumulating at the shaft seal, the excess lubricating oil must flow back to the oil sump in a certain direction, i.e., smooth flow. The specific method is to…

1. Pressure difference between the inside and outside of the reducer: During operation, the friction and heat generated by the moving parts, along with the influence of ambient temperature, cause the reducer temperature to rise. If there is no vent or the vent is blocked, the internal pressure gradually increases. The higher the internal temperature, the greater the pressure difference with the outside. Under the action of the pressure difference, lubricating oil leaks out from the gaps. 2. Unreasonable reducer structural design: 1) The inspection hole cover plate is too thin, easily deforming after tightening the bolts, causing uneven mating surfaces and oil leakage from the contact gaps; 2) During the reducer manufacturing process, the castings were not annealed or aged, failing to eliminate internal stress, inevitably leading to deformation, gaps, and leakage; 3) There is no oil return groove on the housing, causing lubricating oil to accumulate at the shaft seal, end cover, and mating surfaces, leaking outwards from the gaps under the action of pressure difference; 4) Unreasonable shaft seal structure design. Early reducers often used oil groove and felt ring type shaft seal structures. During assembly, the felt was compressed and deformed, while…

Noise from a speed reducer indicates a problem, and this noise will definitely affect its operation. Therefore, our company will explain in detail how to solve the noise problem of a speed reducer. Finally, we will also discuss the details to pay attention to during speed reducer installation, focusing on three main aspects: the installation of the reaction torque bracket, the installation relationship between the speed reducer and the working machine, and the connection between the speed reducer and the working machine. These will be explained in detail below. I. Noise Treatment Methods for Speed ​​Reducers The noise from a speed reducer mainly originates from the friction, vibration, and collision of the transmission gears. How to effectively reduce and minimize noise to make the mixer more environmentally friendly is a key research topic both domestically and internationally. Reducing gear transmission noise during speed reducer operation has become an important research topic in the industry. Many scholars at home and abroad consider the change in gear meshing stiffness in gear transmission as the main factor affecting gear dynamic load, vibration, and noise. Using modified…

I. Application Scope of Cycloidal Pinwheel Reducers: X and B series cycloidal pinwheel reducers are machines that achieve speed reduction through cycloidal pin gear meshing based on the principle of planetary transmission with small tooth difference. These machines are available in horizontal, vertical, double-shaft, and direct-drive configurations, and are the preferred equipment in industries such as metallurgy, mining, construction, chemical, textile, and light industry. II. Main Features of Cycloidal Reducers: 1. High Reduction Ratio and Efficiency: The reduction ratio for a single-stage transmission is 9~87, for a double-stage transmission it is 121~5133, and for multi-stage combinations it can reach tens of thousands. Furthermore, the pin gear meshing system uses rolling friction, with no relative sliding on the meshing surfaces, 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 high overlap result in smooth operation, strong overload capacity, and low vibration and noise. Various specifications of models exhibit low noise. 3. Reliable Use and Long Service Life: Because the main components are made of high-carbon alloy steel with quenching treatment (H…

Common speed reducers include planetary cycloidal pinwheel reducers, worm gear reducers, gear reducers, planetary gear reducers, geared motors, continuously variable transmission (CVT) reducers, special-purpose reducers, harmonic reducers, three-ring reducers, belt drive reducers, enterprise standard reducers, precision reducers, combined reducers, and imported reducers, etc. Below are the advantages of speed reducers: 1. Low energy consumption, superior performance, reducer efficiency up to 96%, low vibration, and low noise. 2. Finely graded transmission ratios, wide selection range, and broad speed spectrum, ranging from i=2-28800. 3. Coaxial helical geared motors have a compact structure, small size, beautiful appearance, and strong overload capacity. 4. High versatility, convenient maintenance, and low maintenance costs, especially for production lines where only a few internal transmission components need to be spared for maintenance and upkeep to ensure normal production. 5. It adopts a new type of sealing device…

Speed ​​reducers are generally used in low-speed, high-torque transmission equipment. They reduce the speed of electric motors, internal combustion engines, or other high-speed power sources by meshing a small gear on the input shaft with a large gear on the output shaft. Below is an introduction to the characteristics of various speed reducers: Worm gear reducers are characterized by their reverse self-locking function, large reduction ratio, and the input and output shafts are not on the same axis or plane. However, they are generally large in size, with low transmission efficiency and low precision. Harmonic reducers utilize the controllable elastic deformation of flexible elements to transmit motion and power. They are small in size and highly precise, but their disadvantages include limited lifespan of the flexible gear, poor impact resistance, and lower rigidity compared to metal parts. The input speed cannot be too high. Planetary reducers have advantages such as a compact structure, small backlash, high precision, long service life, and the ability to achieve a large rated output torque. However, the price…

Cycloidal reducer transmission system testing: With the support of data processing, signal analysis, and computer technology, the transmission system utilizes a dynamic error detection device to measure time-domain error information. The connotation of dynamic testing of the transmission system should include the following aspects: (I) Dynamic accuracy detection of the transmission chain: The excitation of the transmission system includes the periodic excitation caused by the machining and assembly errors of various transmission components such as cycloidal wheels, pin wheels, gears, worm gears, worms, lead screws, and shafts; the torsional vibration and impact excitation of transmission components during operation; and the random excitation caused by power grid fluctuations and the instantaneous instability of transmission components. (II) Time-domain analysis and processing of errors: Using data processing technology, time-domain statistical processing is performed on the error samples to obtain the characteristic values ​​of the transmission system in the time domain, which allows for the evaluation of the system's accuracy. Furthermore, correlation analysis of the system's time-domain error can determine the error...

Models are available in two levels: Level 1 (10 models): 12, 15, 18, 22, 27, 33, 39, 45, 55, 65; Level 2 (13 models): 1512, 1812, 1815, 2215, 2218, 2715, 2718, 3318, 3322, 3922, 4527, 5527, 6533. Cycloidal pinwheel reducer introduction: The cycloidal pinwheel reducer is a novel transmission mechanism that adopts the K-H-V low-tooth-difference transmission principle and cycloidal pin-tooth meshing. It is widely used in drive and reduction devices in textile printing and dyeing, light industry and food, metallurgy and mining, petrochemical, hoisting and transportation, and engineering machinery fields. Structural principle: The entire transmission device of the planetary cycloidal reducer can be divided into three parts: input part, reduction part, and output part. A double eccentric sleeve, offset by 180 degrees, is mounted on the input shaft. Two roller bearings are mounted on the eccentric sleeve…

Cycloidal gear reducers are one of the most commonly used gear reducers, and have been applied in many applications. Compared with other gear reducers, the advantages of cycloidal pinwheel reducers are mainly reflected in the following aspects: Small size and light weight: Cycloidal pinwheel reducers are characterized by their small size, compact structure, and light weight, making them popular with users. High transmission ratio: Cycloidal pinwheel reducers have a higher speed ratio; the transmission ratio is from [value missing] to [value missing] for the first reduction; the reduction ratio is [value missing] for two-stage reduction. High transmission efficiency: Because cycloidal gear reducers use rolling meshing of gear teeth, there is no relative sliding on the meshing surfaces, and the overall efficiency can reach [value missing]%. Easy assembly and disassembly, easy repair: Due to the reasonable structural design of cycloidal reducers, disassembly and assembly are simple and easy to maintain; there are few parts, and lubrication is also simple. 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 the main factor in the grinding of bearing steel after quenching…

Parallel shaft gear motors are widely used in various industrial machinery such as small conveyors, food processing machinery, packaging machinery, and agricultural machinery. In recent years, customer demand for lower noise, higher reliability, and easier product design has been increasing. To meet customer needs, Sumitomo Heavy Industries launched the "Prest NEO series 0.1kW～2.2kW" gear motors in 2007, focusing on "six ease-of-use features." Furthermore, to meet customer demand for smaller capacity models, a new series of products under 90W was developed. *Involute gears are characterized by their involute curve tooth profile (the trajectory traced by the ends of a circularly wound yarn when unwinding it), forming a trapezoidal shape with a rounded edge. This gear mechanism is currently used in many products. 【Features】 1. Long lifespan, high reliability. Ultra-compact models under 90W, and the 0.1kW～2.2kW Prest NEO…

Worm gear screw jacks are widely used in various industries such as machinery, construction, chemical, and medical. They can accurately control and adjust the lifting or pushing height according to a program. They can be directly driven by an electric motor or other power source, or manually. Worm gear screw jacks may experience some common malfunctions during use. This article summarizes some common problems with worm gear screw jacks to help you understand them. Wear of the transmission helical gear: This usually occurs in vertically installed reducers and is 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 gear oil between the motor and the reducer leaks out, and the gears do not receive proper lubrication protection. Ineffective lubrication during startup or operation leads to mechanical wear or even damage. Worm gear wear: Worm gears are generally made of tin bronze, and the mating worm is usually made of 45 steel hardened to HRC45-55…

As everyone knows, JWB ball screw jacks are highly precise, but many customers point out that their price is significantly higher than that of ordinary worm gear jacks. So, what are the advantages of JWB ball screw jacks over ordinary worm gear jacks? Below is an introduction; there's definitely a reason for the higher price. 1. Compared to other worm gear jacks, the design of the JWB ball screw jack utilizes a ball screw with a driving torque of 1/3. 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 with a sliding screw pair. This is very helpful in saving energy. 2. Zero backlash and high rigidity: The ball screw can be preloaded. Because the preload can make the axial clearance negative, it achieves higher rigidity (by preloading the balls inside the ball screw…).

A worm gear reducer is an independent, closed transmission device between a prime mover and a driven machine. It is used to reduce speed and increase torque to meet operational needs. In some applications, it is also used to increase speed, and is called a speed increaser. When selecting a reducer, factors such as the working machine's operating conditions, technical parameters, the power machine's performance, and economic considerations should be taken into account. The external dimensions, transmission efficiency, load-bearing capacity, weight, and price of different types and varieties of reducers should be compared to select the most suitable reducer. I. Classification of Worm Gear Reducers There are many categories, varieties, and types of worm gear reducers. Currently, more than 40 types of reducers have been standardized into industry (national) standards. Reducer categories are based on the gear tooth profile and tooth contour curve used; reducer varieties are reducers with different structures designed according to application needs; reducer types are designed based on the basic structure according to factors such as tooth surface hardness, number of transmission stages, output shaft type, assembly type, installation type, and connection type…

The entire transmission device of a cycloidal pinwheel reducer can be divided into three parts: the input section, the reduction section, and the output section. 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 tooth difference of one tooth. (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 tooth profile curve of the cycloidal wheels and the restriction by the pin teeth on the pin gear, the motion of the cycloidal wheels becomes a planar motion involving both revolution and rotation. During the forward revolution of the input shaft, the eccentric sleeve also rotates one revolution, and the cycloidal wheels rotate one tooth in the opposite direction, thus achieving reduction. Then, with the aid of the W-output mechanism, the cycloidal wheels…

Gearboxes are widely used in industrial production due to their high efficiency, energy saving, and simple operation. However, wear and tear may occur during prolonged use. How can this problem be solved? Here are some methods: Regarding wear on gearboxes, gearbox manufacturers point out that traditional solutions involve welding or electroplating followed by machining. However, both have drawbacks: the thermal stress generated by welding cannot be completely eliminated, easily causing material damage and leading to bending or breakage of components; electroplating is limited by coating thickness and is prone to peeling. Furthermore, both methods involve metal repairing metal, failing to change the "hard-on-hard" contact relationship. Under the combined action of various forces, further wear will occur. For large bearing manufacturers, on-site solutions are often impossible, requiring outsourcing. Gearbox manufacturers have adopted the approach used in contemporary Western countries to address gearbox wear issues, which often involves the use of high-polymer composite materials…

Nowadays, more and more people are using precision planetary gearboxes, not only because of their good performance and low energy consumption, but also because they are inexpensive (specific prices will not be disclosed here). However, many advantages do not mean they are immune to failure. Many people have caused gearboxes to break down due to neglecting certain issues. What are these main failures? 1. Frequent operational errors: Due to insufficient understanding of the structure and performance of the geared motor (especially for new operators), operational errors can easily lead to failures, and even mechanical and safety accidents. 2. Rapid wear: Due to factors such as the machining, assembly, and debugging of new precision planetary gearbox parts, the contact area of ​​the mating surfaces is small, while the allowable torque is large. During operation, the uneven parts on the surface of the precision planetary gearbox interlock and rub against each other. The metal debris worn off acts as abrasive, continuing to participate in friction, further accelerating the wear of the mating surfaces. Therefore, during the break-in period, it is prone to…