Category: Gearboxes and reducers

Driven by continuous national macro-control, my country's speed reducer industry has gradually developed into a major battleground in the international speed reducer industry. my country is currently in a period of economic and social transformation, and the speed reducer industry, as one of China's earliest established industries, must set an example and promote a smooth transformation of my country's economic and social development. Benefiting from the deepening of industrialization and urbanization, and the country's emphasis on the machinery manufacturing industry, the speed reducer industry, as one of my country's basic equipment industries, has also entered a period of deep adjustment in my country's economic development, leading to its transformation and upgrading. The downstream industries' driving force for the development of the speed reducer industry: The downstream application industries of speed reducers mainly include various fields of the national economy and defense industry, such as hoisting and transportation, cement and building materials, heavy mining, metallurgy, power, and aviation and marine applications. Due to the strong downstream market, the development prospects of my country's speed reducer industry are promising. Specific analysis is as follows: 1. Hoisting and transportation…

Gear reducers are widely used in metallurgy, mining, hoisting, transportation, cement, construction, chemical, textile, printing and dyeing, pharmaceutical and other fields. However, there are certain limitations to their use. Therefore, let's understand what precautions should be taken when using them. 1. High-speed rotation should not exceed 1500 r/min. 2. Gear circumferential speed should not exceed 20 m/s. 3. The operating environment temperature should be -40 to 45℃. If below 0℃, the lubricating oil should be preheated to above 0℃ before use. 4. The reducer can be used in both forward and reverse directions. In other words, to ensure the normal operation of the gear reducer and prevent damage, it is essential to operate it under the conditions listed above to prevent damage.

In recent years, China's speed reducer industry has benefited from the deepening of industrialization and urbanization, as well as the country's emphasis on the machinery manufacturing industry. As one of my country's basic equipment industries, the speed reducer industry has undergone more than 40 years of market ups and downs. After the initial single cycloidal speed reducer, the products have evolved into gear speed reducers, worm gear speed reducers, etc., and are widely used in various sectors of the national economy, including power machinery, metallurgical machinery, environmental protection machinery, chemical machinery, food machinery, mining machinery, construction machinery, and water conservancy machinery, enjoying great market favor. Driven by continuous national macro-control, my country's speed reducer industry has gradually developed into a major battleground for the international speed reducer industry. World-renowned companies have entered the Chinese speed reducer market, leveraging their superior brands, strong financial resources, advanced technology, and equipment to engage in fierce competition with domestic speed reducer companies. Meanwhile, domestic companies mainly engaged in the production of general-purpose speed reducers…

my country is currently in a period of economic and social transformation, and the speed reducer industry, as one of China's earliest and most established industries, must set an example to promote a smooth transition in my country's economic and social development. The transformation of China's speed reducer industry can proceed in three directions: First, with the government's support for green and environmentally friendly speed reducers, the industry's transformation should focus on establishing and improving innovation systems and mechanisms, adhering to the core principles of refining and circularizing the chemical industry, intelligentizing and upgrading the equipment manufacturing industry, bio-based and serializing the pharmaceutical industry, and upgrading and integrating emerging industries, to jointly promote the healthy and efficient development of the industry. Second, speed reducer companies should strengthen cooperation with large domestic and international enterprises and conglomerates. Given the current unfavorable international economic situation, innovative speed reducer companies should rely on large and high-quality projects, continue to increase investment in technology and specialized personnel, and continuously attract large projects, cultivate large enterprises, etc.

If a speed reducer malfunctions, it's crucial to address the issue immediately to ensure optimal performance. So, how can we quickly resolve equipment malfunctions? A thorough understanding of the equipment is essential for efficient operation. Failing to do so will significantly hinder our work. When a malfunction occurs, immediately contact professional technicians for a comprehensive inspection and timely resolution of the problem. Properly handling these aspects will undoubtedly benefit future equipment use. Therefore, addressing these issues is crucial…

Equipment inevitably experiences malfunctions during use. Only by properly handling these issues can you achieve the best work efficiency. So, what should you do if a speed reducer malfunctions? When using a speed reducer, a comprehensive inspection is necessary immediately upon malfunction. Only after a thorough inspection can you gain a more complete understanding of the equipment. Properly handling these issues during equipment use will undoubtedly contribute to better work performance. Furthermore, after a speed reducer malfunctions, it's crucial to have it inspected by highly qualified personnel. Professionals can gain a clearer understanding of the equipment's detailed condition. By handling these issues comprehensively when a malfunction occurs, you can ensure the equipment...

Gears are a major fundamental component restricting the development of China's machinery manufacturing industry. China currently has over 200 gear factories (including both vehicle and industrial gears), with an annual output value of approximately 25 billion yuan. In the 21st century, the machinery industry will remain an indispensable and crucial pillar of the national economy. Related experts predict that by 2020, China's machinery and transportation industries will catch up with or even surpass some developed countries. Therefore, the gear industry needs to formulate a development strategy for the 21st century to adapt to the competition of the globalized knowledge economy. According to the Yubo Intelligence Market Research Center, with the rapid development of the domestic economy in recent years and the increase in exports of heavy machinery, the reducer industry, as an important basic industry, has developed exceptionally rapidly. Reducer companies are expanding their production and sales scale, continuously improving their processing capabilities and technological levels. The future market prospects for reducers are very promising. my country's gear reducers have developed from the point of entry into my country…

Common Faults and Troubleshooting Methods for Worm Gear Reducers Fault Type | Fault Cause | Troubleshooting Method Overheating | Overload | Insufficient or Excessive Lubricating Oil | Poor or Inappropriate Lubricating Oil | Excessive Oil Seal Friction | Improper Connection Between Output Shaft and Transmission Device | Adjust to Appropriate Load or Select a Larger Model | Add Appropriate Lubricating Oil as Instructions | Add Appropriate Lubricating Oil After Draining Oil | Add a Few Drops of Lubricating Oil to the Oil Seal | Adjust to Appropriate Position | Noise | Poor Meshing of Worm Gear and Worm | Bearing Damage or Excessive Clearance | Insufficient Lubricating Oil | Foreign Object Intrusion | Repair Tooth Contact Surface | Replace Bearing | Add Appropriate Lubricating Oil as Instructions | Remove Foreign Objects and Replace Lubricating Oil | Abnormal Vibration | Poorly Fixed Transmission Device | Worm Gear Wear or Damage | Bearing Wear or Damage | Loose Bolts | Foreign Object Intrusion | Fixed Transmission Device | Replace Worm Gear | Replace Bearing | Tighten Bolts | Remove Foreign Objects and Replace Lubricating Oil | Oil Leakage | Damaged Oil Seal | Broken Gasket | Oil Leakage…

How to effectively inspect and maintain a speed reducer. Different lubricating oils must not be mixed. The positions of the oil level plug, drain plug, and breather are determined by the installation location. Their relative positions can be determined by referring to the speed reducer's installation location diagram. Shanghai Jingchuan Speed ​​Reducer will now explain this from multiple aspects, mainly focusing on oil changes, oil level checks, and oil inspection for speed reducers with oil level plugs. I. For speed reducers with oil level plugs, check the oil level to ensure it is within acceptable limits; install the oil level plug. II. Oil Change: After cooling, the oil viscosity increases, making draining difficult. The speed reducer should have its oil changed while it is still in operating temperature. Disconnect the power supply to prevent electric shock! Wait until the speed reducer has cooled down and there is no risk of combustion! III. Precautions: Add new oil of the same brand; the oil level should match the installation location; check the oil level at the oil level plug; tighten the oil level plug and breather; the speed reducer should still be warm when changing the oil; place a…

How to solve the problem of early pitting corrosion in gear reducers? Pitting corrosion is definitely related to lubricating oil, and it is also closely related to the materials of the gear reducer. There are certain handling specifications in the normal use process. Another point is that it is caused by poor gear contact, resulting in local overload. Local overload of the gears causes the actual contact stress to greatly exceed the allowable contact stress of the gear material. Some gears do not achieve full tooth contact or only contact at one end of the tooth, or even diagonal contact. Shanghai Jingchuan Gear Reducer will explain this in detail below. I. The influence of materials and handling specifications The correct selection of gear materials and the matching of the operating load, as well as the selection and matching of heat treatment hardness, are also causes of early pitting corrosion. II. The influence of lubricating oil Improper lubrication of gear transmission and unsuitable selection of lubricant are also causes of early pitting corrosion. Ways to prevent early pitting corrosion of gear reducer gears: (I) Gear reducer transmission…

The characteristics and differences between worm gear drives and belt drives. Here, Jingchuan Reducer will summarize them. The main differences and characteristics are: worm gear drives have a large ratio, while belt drives have a small ratio; worm gear drives are vertical transmissions, while belt drives are parallel transmissions; worm gear drives have small torque, while belt drives have large distances; worm gear drives have low efficiency, while belt drives have slightly higher efficiency; structurally, worm gear drives are more complex and have a relatively higher cost. I. Characteristics of Belt Drives in Reducers: Belt drives are characterized by simple structure, smooth transmission, shock absorption, ability to transmit power between large shaft gaps and multiple shafts, low cost, no need for lubrication, and easy maintenance, making them widely used in modern mechanical transmissions. Friction belt drives can slip under overload and have low operating noise, but the transmission ratio is inaccurate (slippage rate below 2%); synchronous belt drives can ensure synchronous transmission, but their ability to absorb load changes is slightly worse, and they are noisy at high speeds. Belt drives are used to transmit power…

Several points should be noted when selecting a speed reducer model: The output shaft diameter of the selected speed reducer should not exceed the usable shaft diameter listed in the table. If the torque calculation shows that the speed is sufficient for normal operation, but insufficient at full servo output, it is necessary to implement current limiting control on the driver side of the motor or torque protection on the mechanical shaft. The selection of a general-purpose speed reducer includes providing the initial conditions, selecting the type, and determining the specifications. Comparatively, type selection is simpler, but accurately providing the operating conditions of the speed reducer and understanding its design, manufacturing, and usage characteristics are key to correctly and reasonably selecting the specifications of a general-purpose speed reducer. The selected specifications must meet conditions such as strength, thermal balance, and the ability of the shaft extension to withstand radial loads.

In gear reducers, gear module is a crucial concept. A higher module means thicker teeth. Module refers to the ratio of the pitch t between adjacent teeth on the same side to pi (m=t/π), measured in millimeters. Module is a fundamental parameter of modular gears. A larger module results in a larger radial dimension for a given number of teeth. Module standards are established based on design, manufacturing, and inspection requirements. For gears with non-spur gears, there are normal module (mn), face module (ms), and axial module (mx), all measured in millimeters, based on the ratio of their respective tooth pitches (normal, face, and axial) to pi. Bevel gears have different module types: large end module (me), average module (mm), and small end module (m1). Cutting tools have corresponding module types such as tool module (mo). Standardized modules have wide applications, including metric gear drives, worm gear drives, synchronous toothed belt drives, ratchet drives, gear couplings, etc.

In daily use, we often find that speed reducers become damp due to their placement and other factors, affecting normal operation. Here are some solutions: 1. External heat source method: Disassemble and inspect the damp speed reducer, then place it inside a high-power incandescent light bulb to heat it or put it in a drying oven. 2. Welding machine drying method: Before operating this method, connect the terminals of the damp windings in series and ground the casing. This allows for heating and drying of all three windings. 3. Excitation coil drying method: Wind an excitation coil onto the stator core of the speed reducer and apply alternating current to generate magnetic flux in the stator. The iron loss of the magnetic flux then dries the stator.

Sometimes, axial displacement occurs during the operation of a speed reducer. This phenomenon often leads to poor meshing of the mechanical gears, resulting in unilateral meshing and affecting the normal operation of the reducer. So, why does axial displacement occur in a speed reducer? The speed reducer manufacturer provides the following explanation: The two end faces of the speed reducer gears should be perpendicular to the axis, and the plane formed by the symmetrical center points of the two helical gears should also be perpendicular to the axis. However, in actual machining and assembly, there will be certain errors. When a herringbone gear with errors is assembled onto the shaft, the closed loop formed by the symmetrical center points of its left and right helical gears is not a plane perpendicular to the axis, but a curved surface. The trajectory of this curved surface rotating around the axis is an irregular wavy curve, and the rotation trajectories of the two different gears are two different curves. During the operation of a pair of meshing gears, their symmetrical center…

Gear 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. However, unstable transmission can occur during operation. What causes this? Under normal operating conditions, the maximum temperature of a gear reducer should not exceed 45 degrees Celsius. If high temperature occurs, the machine should be stopped immediately for inspection. Common causes include using a gear reducer that is too small for the specified tonnage, overloading, or excessively tight fitting of the worm gear and worm wheel end caps, leading to high temperatures. The input speed is also uncertain. Worm gear reducers are grease-lubricated, and the maximum speed of the worm shaft should not exceed 1000 min/s. Excessive input speed can also cause high-speed issues and jamming. The solutions for high temperatures include reducing the input speed, checking if the fitting of the end caps is too tight, and…

Why do speed reducers sometimes break their shafts? Let's take a look: 1. Consider the overload capacity of the drive motor and the maximum operating torque required in practice. 2. The rated output torque of the motor paired with the speed reducer, multiplied by the reduction ratio, should, in principle, be less than the rated output torque of a similar speed reducer provided in the product catalog. Besides poor concentricity of the speed reducer output end assembly causing shaft breakage, the output shaft of the speed reducer may also break. Incorrect selection can lead to insufficient output power from the selected speed reducer.

Pressure difference between the inside and outside of the speed reducer: During operation, friction between moving parts generates heat, and the ambient temperature affects the speed reducer's temperature. 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 influence of this pressure difference, lubricating oil leaks from the gaps. So how should we deal with speed reducer oil leaks? 1. Improve the vent cap and inspection hole cover: The internal pressure of the speed reducer being greater than the external atmospheric pressure is one of the main causes of oil leaks. If the internal and external pressures are balanced, oil leaks can be prevented. Although speed reducers have vent caps, the vent holes are too small and easily blocked 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 developed, and the original thin inspection hole cover was changed to 6mm thick. The oil cup-type…