Category: Gearboxes and reducers

With the increasing frequency of use of speed reducers, the quality requirements for them have also increased significantly. However, many speed reducer manufacturers still need to continuously improve their transmission equipment and service life. Our Shaanxi speed reducer factory will explain this in detail from the perspectives of speed reducer maintenance measures and the reasons for quality improvement. Speed ​​reducers, with their special functions, are used in power transmission equipment in various industries, becoming an important part of the power machinery series. People may pay more attention to the purchase of speed reducers that play a crucial role in the production process, but they may not have a deep understanding of the time-consuming and labor-intensive maintenance of speed reducers. In fact, equipment maintenance is equally important for machines; inadequate maintenance can lead to the paralysis of the entire production line. First, the speed reducer oil should be checked regularly. Due to internal and external pressure differences, poor sealing performance, etc., oil leakage may occur in the equipment. Regular checks can detect problems in time, and…

Gearboxes occasionally experience problems during use. How can proper maintenance reduce these malfunctions? First, the optimal operating temperature for the gearbox is between 0-50 degrees Celsius. Second, after 100 hours of use, the gear oil should be changed immediately; thereafter, it can be changed every 2000 hours. Third, when disassembling the gearbox, do not use a hammer to strike it, as this can damage the equipment. Here are some common gearbox malfunctions: 1. Prolonged use can damage the gearbox's bearing housing. 2. Wear on the gear bearings, primarily at the shaft end and keyway. 3. Damage to the drive bearing of the gearbox's transmission mechanism. 4. Leakage at the gearbox's mating surfaces.

Those familiar with planetary gear reducers know that noise is a major headache for many gear reducer manufacturers during operation. Therefore, many manufacturers have innovated and researched various parts to reduce noise. After years of research, a gear design method has been proposed that optimizes gear parameters, such as the displacement coefficient, tooth height coefficient, pressure angle, and center distance, to minimize the meshing impact speed and keep the ratio of the meshing impact speed to the engagement impact speed within a certain range. This reduces or avoids meshing pitch circle impact and can significantly reduce gear noise. The reducer is small in size, lightweight, has high load-bearing capacity, long service life, smooth operation, and low noise. It features power splitting and multi-tooth meshing characteristics. By modifying the shape, dynamic load and speed fluctuations are minimized to reduce noise. This method has proven to be effective in practice. However, using this method requires…

During equipment processing and use, mechanical installation and adjustment are crucial, with the installation and adjustment of speed reducers receiving particular attention. We will detail the installation and adjustment of speed reducers from the following three points: 1. To ensure the assembly accuracy of the speed reducer, it is not necessary to start the machine during installation, and the sealing sealant should not be damaged. Inspection can be done by opening the oil sight glass or by washing the anti-rust grease on the gear surface with kerosene. High level, high performance. Cylindrical gears generally undergo carburizing, quenching, and gear grinding, increasing load-bearing capacity by more than 4 times. They are small in size, light in weight, low in noise, high in efficiency, and high in reliability. 2. Flexible couplings, gear couplings, or other non-rigid couplings can be used between the speed reducer and the motor or main unit. Modular design. Basic parameters use preferred numbers, with uniform dimensions and specifications. Parts have strong versatility and interchangeability, and the series is easy to expand and innovate, facilitating mass production and cost reduction. 3. The speed reducer should be installed flat…

Anyone who frequently works with machinery knows that speed reducers are essential auxiliary equipment in some machines. High-speed operation can be dangerous, so speed reducers are needed to balance the speed. However, the causes of gearbox slippage during use can be understood from the following three points: 1. Slippage occurs due to broken teeth causing the input shaft to lose axial constraint, or due to loose fastening of the driven gear on the intermediate shaft. In actual transmission, insufficient interference fit between the driven gear and the intermediate shaft often causes axial movement of the driven gear relative to the intermediate shaft, which in turn causes axial movement of the input shaft. Therefore, insufficient interference fit is the main cause of gearbox slippage. Additionally, the direction of rotation of the speed reducer also has a certain impact on slippage. 2. Slippage caused by misaligned gear machining. Misalignment of the driven gear on the intermediate shaft can cause slippage. Gear machining uses the outer diameter and end face for positioning, while gear assembly…

1. Never inject substandard lubricating oil under any circumstances. 2. If the reducer uses grease lubrication, it is usually pre-lubricated before leaving the factory. 3. When using grease for lubrication in a reducer, it is best to use special greases such as 2#, molybdenum disulfide-2#, or 2L-2# lithium-based grease. 4. When adding lubricating oil to the reducer, the oil level should not exceed the upper limit of the oil level gauge, nor should it be lower than the lower limit. During operation, the oil level should be checked frequently to replenish the same type of lubricating oil as needed. 5. The standard lubricating oil filling volume is one-half to one-third of the reducer's capacity. It is important not to add too much grease, as this can lead to overheating. 6. During the first 300-minute run of the reducer…

Before using a speed reducer, it needs to be assembled. Speed ​​reducer assembly is the process of combining several speed reducer parts into a component or combining several speed reducer parts into a final product. So, what are the preparatory works before speed reducer assembly? First, interpret the product assembly drawings, familiarize yourself with the process documents and technical requirements, understand the product structure, the function of the speed reducer parts, and their interconnections, and determine the assembly method and sequence. Second, prepare and inspect the necessary assembly tools and testing equipment, equip the necessary assembly auxiliary supplies, and clean and sanitize the speed reducer parts, removing burrs, rust, chips, oil, and other contaminants to ensure the parts meet cleanliness requirements. Third, perform scraping and other repair work on some parts, and conduct balance tests, leakage tests, and airtightness tests on others. Assembly work is relatively complex; product assembly includes two processes: sub-assembly and final assembly. Sub-assembly…

Gear transmission lubricant, or gear oil for short, is mainly used to lubricate various mechanical gear transmission devices. Like internal combustion engine lubricants, gear oil is composed of mineral oil-based (or synthetic) base oils and corresponding additives. Gear oils can be broadly classified into vehicle gear oils and industrial gear oils. Vehicle gear oils are mainly used in the transmission devices, steering gears, front and rear drive axle gearboxes, universal joints, needle roller bearings, and other components of automobiles and construction machinery. They can also be used in gear transmission components of tanks, ships, and other vehicles under corresponding loads and working conditions. Industrial gear oils are mainly used in open, semi-open, closed, and worm gear transmission devices under various load conditions. I. Working Conditions and Functions of Gear Oil: Gears in various mechanical transmission mechanisms can be classified into parallel shaft transmissions, intersecting shaft transmissions, and staggered shaft transmissions according to the different relative positions of their axes. Each type of transmission has different transmission methods based on the shape of the gears and teeth…

Transmission between two non-parallel shafts presents numerous problems, even under moderate loads. Two meshing helical gears can create a cross-shaft transmission; for example, two right-hand helical gears at 15 degrees will provide a 30-degree cross-shaft transmission. However, because it's point contact rather than line contact, the load capacity is limited. The effect of shaft intersection is a high relative oblique velocity superimposed at the contact point, much higher than the normal sliding velocity of parallel shafts, which increases the likelihood of oil film rupture and tooth wear. Bevel gears are used for transmissions between two intersecting shafts, most commonly between perpendicular shafts. Straight bevel gears are similar to spur gears, meshing in a similar manner. These gears are highly sensitive to assembly errors because the distance from the two gears to the intersection of the shafts must be ensured. Straight bevel gears are difficult to manufacture precisely and can only be calibrated on transmission error devices; therefore, they are never used in applications requiring high speeds and precision transmissions…

1. Compact mechanical structure, lightweight, small and efficient; 2. Excellent heat exchange performance and rapid heat dissipation; 3. Easy and flexible installation, superior performance, and easy maintenance; 4. Large transmission ratio, high torque, and high overload capacity; 5. Smooth operation, low noise, and durable; 6. Strong applicability and high safety and reliability. This product is currently widely used in mechanical speed reduction devices for production process equipment in various industries, and has been well received by users. It is the best choice for modern industrial equipment to achieve high torque, high speed ratio, low noise, and high stability mechanical speed reduction transmission control devices.

Speed ​​reducers 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 speed reducers may also have several pairs of gears operating on the same principle to achieve the desired reduction effect. The ratio of the number of teeth on the large gear to the number of teeth on the small gear is the transmission ratio. Yamashita Electric, a Japanese company specializing in the sale of geared stepper motors (such as 42mm, 57mm, and 86mm stepper gearbox motors), considers a speed reducer a power transmission mechanism that uses a gear speed converter to reduce the motor's rotational speed to the desired speed while obtaining a larger torque. Common speed reducers include helical gear reducers (including parallel shaft helical gear reducers, worm gear reducers, bevel gear reducers, etc.), planetary gear reducers, cycloidal pinwheel reducers, worm gear reducers, planetary friction reducers, etc.

Cycloidal pinwheel reducers are reliable and have a long service life because their main components are made of bearing steel, which is hardened (HRC58～62) to achieve high strength. Furthermore, some transmission contacts utilize rolling friction, making them durable and long-lasting. So, what are the methods for measuring the temperature rise of a cycloidal pinwheel reducer? Cycloidal pinwheel reducer temperature rise measurement method: JB—91 1 Subject matter and scope This standard specifies the environmental conditions, measurement methods, and judgment of the measurement results for the temperature rise of a cycloidal pinwheel reducer (hereinafter referred to as the reducer). This standard applies to reducers lubricated with lubricating oil. 2 Referenced standards JB Cycloidal pinwheel reducer load-bearing capacity and transmission efficiency measurement method 3 Environmental conditions and temperature measurement points 3.1 Environmental conditions 3.1.1 The temperature rise measurement of the reducer should be carried out indoors, unaffected by the external temperature. The indoor ambient temperature should be between 5 and…

1. Guiding Principles: Establish and implement the Scientific Outlook on Development, use advanced and applicable standards and technologies to serve the development of the national economy, actively adopt international standards, narrow the gap, strive to progress in sync with international standards, and substantially participate in international standardization work. 2. Work Objectives: Strengthen and increase the adoption of international standards, using the level of standards to promote industrial transformation and upgrading and product replacement, thereby enhancing their market competitiveness. Research the formulation of modular reducer standards, with the standardization of invisible modules as a breakthrough to achieve modular manufacturing in enterprises. Strengthen the management and level confirmation procedures of enterprise standards to ensure the uniformity and seriousness of enterprise standard implementation. Complete the adoption of all standards by 2010, fully aligning with international standards.

Installation, Use, and Lubrication I. Installation: 1. When installing couplings, pulleys, sprockets, etc., on the output shaft, do not strike it. Use the threaded hole on the outer end of the output shaft to screw in the screw and press in the connecting parts. 2. When installing a base-type continuously variable transmission (CVT) on a foundation, calibrate the installation centerline elevation, levelness, and relevant dimensions of the connected components. The coaxiality of the drive shaft should not exceed the allowable range of the coupling. 3. Vertical MB CVTs can be installed at any angle, but the oil level must exceed the centerline of the oil level gauge on the higher side. II. Use: 1. Before use, add the specified lubricating oil to both the CVT and the reducer. 2. The ambient temperature of the MB CVT should not exceed 40℃, and the surface temperature of the working oil should not exceed 70℃. A slightly higher temperature rise may occur at higher input speeds or when using a new machine. After 80 hours of saturated operation, the temperature rise will gradually decrease. Afterward, the temperature will rise 20℃-25℃ above the ambient temperature and…

A hardened 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 while obtaining a larger torque. Hardened gear reducers are relatively precise machines used to reduce speed and increase torque. They are suitable for high-speed shaft speeds not exceeding 1500 rpm, gear transmission circumferential speeds not exceeding 20 m/s, and operating environments with temperatures ranging from -40℃ to 45℃. Below, we introduce the models of hardened gear reducers: Models include: ZDY single-stage cylindrical gear reducer, ZLY two-stage cylindrical gear reducer, ZSY three-stage cylindrical gear reducer, and ZFY four-stage cylindrical gear reducer. Specifications include: Single-stage: 80, 100, 125, 160, 200, 250, 280, 315, 355, 400, 450, 500, 560; Two-stage: 112, 1…

Speed ​​reducers are used in industries such as lifting and transportation, engineering machinery, metallurgy, mining, petrochemicals, construction machinery, light industry and textiles, medical equipment, instrumentation, automobiles, shipbuilding, weaponry, and aerospace. Below, we will explain the installation method and its steps. Correct installation, use, and maintenance of the speed reducer are crucial for ensuring the normal operation of mechanical equipment. Therefore, when installing the speed reducer, please strictly follow the installation and usage guidelines below for careful assembly and use. The first step is to confirm that the motor and speed reducer are intact before installation, and to strictly check whether the dimensions of all parts connecting the motor and speed reducer match. This includes the dimensions and tolerances of the motor's positioning boss, input shaft, and speed reducer groove. The second step is to unscrew the screws on the dustproof hole on the outside of the speed reducer flange, adjust the clamping ring so that its side hole aligns with the dustproof hole, insert the Allen wrench, and tighten it. Afterward, remove the motor shaft key. The third step…

Speed ​​reducers are used in industries such as lifting and transportation, engineering machinery, metallurgy, mining, petrochemicals, construction machinery, light industry and textiles, medical equipment, instrumentation, automobiles, ships, weaponry, and aerospace. What precautions should be taken during installation? Installation Precautions: 1. Connection between the speed reducer and the working machine: The speed reducer is directly mounted on the main shaft of the working machine. When the speed reducer is running, the reaction torque acting on the speed reducer housing is balanced by a reaction torque bracket installed on the speed reducer housing or by other methods. The other end is directly fitted to the machine, and the other end is connected to a fixed bracket; 2. Installation of the reaction torque bracket: The reaction torque bracket should be installed on the side of the speed reducer facing the working machine to reduce the bending moment added to the working machine shaft. The bushing at the connection end of the reaction torque bracket and the fixed support uses an elastomer such as rubber to prevent deflection and absorb the resulting torque fluctuations; 3. Installation relationship between the speed reducer and the working machine: To avoid the main shaft of the working machine…

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 smaller gear on the input shaft with a larger gear on the output shaft. Ordinary speed reducers 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 gear to the number of teeth on the small gear is the transmission ratio. Below, we'll explain the function of a speed reducer! The functions of a speed reducer are: 1) Reducing speed while increasing output torque. The torque output ratio is calculated by multiplying the motor output by the reduction ratio, but it's important to note that this should not exceed the speed reducer's rated torque. 2) Reducing speed while decreasing the load's inertia. The reduction in inertia is equal to the square of the reduction ratio. You can see that most motors have a value indicating their inertia.