March 14, 2025

Leili Passed IATF16949 Certification Audit
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Jiangsu Leili Successfully Passed IATF16949 Certification Audit

On September 10th , 2018, the company invited three auditing teachers from Beijing Jiuding Guolian Certification Company to review and evaluate the operation conformity and suitability of IATF16949:2016 automobile quality management system. After the first regular meeting, the audit team immediately put in a tight audit. Accompanied by the guide, auditees in an orderly manner to transmit, submit and respond to auditing requirements directives put forward by auditors. After two and a half days’ examination, the audited teacher gave a high evaluation of the management of Leili A certificate of compliance issued by Beijing Jiuding National Union certification company was successfully obtained in October 18, 2018.

Stepper Motor
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6 Advantages of Closed Loop Stepper Motors

Stepper motors are often misconceived as the lesser of servo motors, but as a matter of fact, they are highly reliable just like servo motors. Featuring high torque and low vibration at low speeds, the custom stepper motor operates by accurately synchronizing with the pulse signal output from the controller to the driver, and achieving highly accurate positioning and speed control. A stepper motor can be divided into open loop stepper motor and closed loop stepper motor. Here Leili Motor will talk about these two types of stepper motors and five major advantages of closed loop stepper motors. Open loop stepper motor Open loop stepper motors are the motors that convert electrical pulse signals into angular displacements and are used in an extremely wide range of applications. In the case of non-overload, the speed and stop position of the motor only depends on the frequency of the pulse signal and the number of pulses, and is not affected by changes in the load. When receiving a pulse signal, the stepper driver drives the stepper motor to rotate a fixed angle step by step, called the “step angle”. The rotation is run step by step at a fixed angle. The amount of angular displacements can be controlled through controlling the number of pulses, so as to achieve accurate positioning; meanwhile, the speed and acceleration of motor rotation can be controlled by controlling the pulse frequency, so as to achieve speed regulation. A stepper motor is an induction motor that works by using an electronic circuit, a driver, to turn DC power into a time-sharing powered multi-phase timing control current. Although stepper motors are powered by DC current, they cannot be understood as DC motors, which are power motors that convert DC electrical energy into mechanical energy, while stepper motors are open-loop control motors that convert electrical pulse signals into angular displacement. Seven Differences Between Stepper Motor And Servo Motor It is worth noting that stepper motors are used in low speed applications – up to 1,000r/min per minute, and the best working range is 150~500r/min, but the best working range of a closed loop stepper motor can be 1500r/min. 2-phase stepper motors at 60~70r/min are prone to low speed resonance, generating vibration and noise, which needs to be avoided by changing the reduction ratio, increasing the subdivision, and adding magnetic dampers, etc. If the accuracy of the step angle can not be guaranteed when the subdivision level is greater than 4, you’d better replace it with a stepper motor with more phases (i.e., smaller step angle) or a closed-loop stepper motor or a servo motor. ● Control accuracy The control accuracy of the servo motor can be set according to the encoder for higher accuracy. ● Low frequency characteristics The stepper motor is prone to vibration at low frequencies, while the servo motor will not vibrate. ● Torque-frequency characteristics The torque of the stepper motor becomes smaller as the speed increases, so its maximum operating speed is generally less than 1,000r/min. The servo motor within the rated speed (generally 3,000r/min) can output the rated torque at constant power at the rated speed, and its maximum speed can be 5,000 r/min. ● Overload capacity The custom stepper motor cannot be overloaded, but the servo motors can be overloaded by 3 times the maximum torque. ● Operational performance The stepper motor adopts open-loop control and the servo motor employs closed-loop control. ● Speed response The stepper motor can start within 0.15~0.5s, but it only takes 0.15~0.5s to start the servo motor, and the servo motor can reach rated 3,000r/min in just 0.01s. ● Efficiency indicator The stepper motor has an efficiency of about 60% and the servo motor has an efficiency of about 80%. ● Cost You will also find in actual use that the servo motor is much more expensive than the stepper motor, so the stepper motor is more widely used, especially in the applications with low positioning accuracy requirements. Six Advantages Of Closed-Loop Stepper Motors A closed loop stepper motor is the stepper motor with an encoder added to the end of the motor, allowing for closed-loop control. Closed-loop control of the stepper motor is a servo system that uses position feedback and/or velocity feedback to determine the phase transition that is compatible with the rotor position, which can greatly improve the performance of stepper motors without the phenomenon of lost steps. Here, six major benefits of a closed-loop stepper motor are explained to help you better understand its characteristics. 1. High speed response Compared to the servo motor, the closed-loop stepper motor can strongly follow the positioning commands, resulting in extremely short positioning time. In applications with frequent starts and stops, the positioning time can be significantly reduced. 2. More torque produced than the servo motor The closed-loop stepper motor can make up for the drawbacks of an ordinary stepper motor such as out of step and insufficient vibration at low speed. 3. High-torque and out-of-step operation can be achieved even under 100% load, eliminating the need to consider torque loss as is the case with ordinary stepper systems. 4. Closed-loop drive can increase the efficiency to 7.8 times, including output power increased to 3.3 times, and speed increased to 3.6 times. The closed loop stepper motor can obtain higher operating speed, more stable and smoother speed than open-loop control. 5. The closed-loop stepper motor will be completely stationary when it stops, without the micro-vibration of the ordinary servo motor. It can replace the application of general-purpose servo system when low cost and high precision positioning is required. 6. Heat and vibration of the closed-loop stepper motor is less than the open-loop stepper motor. Encoder feedback allows it to have higher accuracy than that of the ordinary stepper motor. To conclude, the closed-loop stepper motor has the characteristics of low cost, high efficiency, no micro-vibration when stopping, high rigidity, no rectification, high speed, and high dynamic response, etc. Therefore, it has become the most cost-effective solution to replace

High-tech industry
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Jiangsu Leili, Changzhou Science & Technology, Changzhou Gongli 2018 Have Been Identifield As High-Tech Enterprises Successfully

On October 24th, 2018, the Municipal Bureau of Science and Technology announced the list of the first batch of enterprises to be identified as high-tech enterprises in Jiangsu Province in 2018. All three enterprises of the Leili Group were listed on the list. According to official reports, the first batch of high-tech enterprises declared a total of 127 in Changzhou City in 2018. Through 66 enterprises, the passing rate was only 52%.

Jiangsu Leili Starts Construction
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Jiangsu Leili Starts Construction

In 2020, we experienced the longest and most special Spring Festival holiday, and faced a historic disaster—the predatory of new coronavirus pneumonia. On January 24, 2020, Jiangsu Province initiated a first-level response to public health events and implemented the most stringent scientific prevention and control measures. On January 25, 2020, Jiangsu Leili established the “Emergency Prevention and Control Command Team” to systematically and comprehensively arrange the company’s epidemic prevention work. Under the leadership of the general manager and the emergency team, members at all levels actively participated in and worked hard to prevent and control Work, successfully passed the government assessment on February 11, 2020, and obtained the approval to resume work! We firmly believe that the epidemic will be overcome, and we believe that we will soon have a happy spring. In 2020, we will still be full of passion and do every job pragmatically. In order to provide employees with a safe working environment, the company organizes personnel to ensure all aspects.

News

Global Servo and Stepper Motors Market 2019 – Business Strategies, Product Sales and Growth Rate, Assessment to 2026

Fior Markets has released a new market study titled Global Servo and Stepper Motors Market which contains an introduction to new trends. This information will guide the businesses performing in the industry to know the market and make the strategies for their business growth accordingly. The research report outlines the comprehensive and collaborative analysis of the industry from past to present, and also gives a forecast. Then, it studies the market size, industry share, key drivers, major segments, and CAGR. The industry verticals, including competitive market scenario, development opportunities, and regional presence,e have also been covered. Well-established international vendors in the Servo and Stepper Motors market are giving tough competition to new players because they face difficulties with technological development, reliability, and quality problems. The report answers questions on the current market development, opportunity, the competitive scope, and cost structure. Key insights given by segments will help you monitor future profitability and make critical decisions for growth. Professional Key players including in the report :ABB Ltd, Applied Motion Products, Faulhaber, Nippon Pulse, Schneider Electric, Ametek, Inc., Emerson, Mini Motor, Moog, Nidec Corporation, Phytron, TECO Electro Devices, Azbil, General Electric, Allied Motion Technologies, Inc., Siemens AG, Rockwell Automation Inc., and others. DOWNLOAD FREE SAMPLE REPORT:https://www.fiormarkets.com/report/servo-and-stepper-motors-market-by-motor-type-385901.html#sample Servo and Stepper Motors market report offers a professional and detailed study of the latest trends and upcoming market advancement prospects, key drivers, and constraints, segmentation study, competitive analysis, and forecast analysis. Further, it researches the global market size (value, capacity, production, and consumption) in a key region including North America, Europe, Asia Pacific, South America, and the Middle East and Africa. Based on manufacturers, region, type, and application, this report analyzes the market status, opportunities and challenges, entry barriers, market share, and growth rate. This statistical study also demonstrates market scope, production, supply/demand, and import/export. Then it studies raw materials, downstream demand, and market dynamics. Overall evaluations featured in the report have been made using approved research methodologies and inference. The cost structure analysis covers the cost of raw materials involved in the Servo and Stepper Motors cost. BROWSE COMPLETE REPORT AND TABLE OF CONTENTS:https://www.fiormarkets.com/report/servo-and-stepper-motors-market-by-motor-type-385901.html The traders, distributors, dealers, and manufacturers involved in the market on a global scale is offered. In-depth analysis of parent market trends, macro-economic indicators and governing factors along with market attractiveness according to segments is also provided in the report. The market study enhances the decision-making potential by clarifying significant aspects related to market stability. Customization of the Report: This report can be customized to meet the client’s requirements. Please connect with our sales team ([email protected]), who will ensure that you get a report that suits your needs. Linda Cristline has lived in Seattle her whole life. Linda has worked as a journalist for nearly a decade, having contributed to several large publications, including The Seattle Times and the Oakland Tribune. As a journalist for Canyon Tribune, Linda covers national and international developments.

Jiangsu Leili Acquires 59.09% Stake
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Jiangsu Leili Acquires 59.09% Stake in Wuxi Shike To Expand Thermal Management Business for New Energy Vehicles

Recently, Jiangsu Leili acquired 59.09% equity interest in Wuxi Shike Micro Motor Co. This acquisition will enhance the competitive advantage of Jiangsu Leili’s thermal management business for new energy vehicles. Wuxi Shi Ke was founded in 2009 as the world’s leading new energy automobile air conditioning compressor motor supplier, with 2022 operating income of nearly 70 million yuan. After years of development, Wuxi Shi Ke has gained a significant competitive advantage in this market segment by virtue of its diversified product structure, leading update and iteration efficiency, and strong cost-control capability. Wuxi Shi Ke has entered the supply chain of domestic and overseas head automobile enterprises, customers include Daimler, India TATA, Yutong Bus, BYD, Chery Automobile, Dongfeng Automobile, Geely Automobile, Zero Run Automobile, Hedong Automobile, SAIC Datsun, Ideal Automobile, Chang’an Automobile, JAC Automobile, Brilliance Xinyuan, etc., the products cover a variety of passenger and commercial models and have been realized in mass production. Jiangsu Leili through this acquisition into the field of air conditioning compressor motor, short-term is expected to accelerate the new energy vehicle business revenue volume, in the medium and long term will help the group of new energy vehicle thermal management products, technology, market integration of resources, to help Leili platform type enterprise strategic planning steadily realized. In terms of products, Leili’s existing thermal management products for new energy vehicles cover battery pack cooling water pumps, air conditioning compressor controllers and shell covers, air conditioning actuators, and so on. Wuxi Shike’s electric air conditioning compressor motor is an important part of the thermal management system, and the acquisition will help Leili to further improve its thermal management product line for new energy vehicles. In addition, Wuxi Shike’s air conditioning compressor motors are expected to penetrate into the energy storage industry, forming synergy with Leili’s energy storage thermal management products. In the market, brushless compressor motors are expected to replace brushed motors by virtue of their high efficiency and energy-saving advantages, realizing rapid expansion of the market scale. Through this acquisition, Jiangsu Leili and Wuxi Shike will realize the reuse of channel resources on both sides and accelerate the development in related application fields.

News

What Is The Difference Between Differential Motor And Brushless Motor Which Is Better: Differential Motor Or Brushless Motor

What is the difference between a differential motor and a brushless motor? The rotor of a differential motor is a coil winding, connected to the power output shaft, and the stator is a permanent magnet; the rotor of a brushless motor is a permanent magnet, connected to the output shaft together with the housing, and the stator is a winding coil, without the commutation brushes used to change the electromagnetic field alternately in a differential motor, so it is called a brushless motor. It is called a brushless motor. Both differential motors and brushless motors are motors used to drive mechanical equipment, but their working principles and application scenarios are very different. A differential motor is a special type of motor that enables a vehicle to steer by making the two wheels move at different speeds when turning. A differential motor is generally composed of an electric motor, a re-speeder, an interpolator, a fork and other components. Differential motors are mechanically efficient and have high steering accuracy, but can only be used for specific applications, such as for maintaining smooth and controlled steering while the vehicle is moving. Brushless motors, on the other hand, are a common type of motor, also known as brushless DC motors (BLDC), which work by converting electrical energy into magnetic energy and mechanical motion to achieve work. It has the advantages of higher efficiency, lower noise and longer life than traditional DC motors, and is widely used in industry, household appliances, automobiles, aviation and other fields. Therefore, differential motors and brushless motors are very different in terms of working principle, usage scenarios and application areas. Differential And Brushless Motor, Which Is Better Motors have an important role in many scenarios, especially in industrial applications, which is better: differential motors or motors? It is the most commonly used type of motor. So, differential motor and brushless First, from the motor structure, differential motor and ordinary motor structure is basically the same, only an additional reducer mounted on the motor shaft, while the brushless motor structure is more complex, consisting of three parts: brushless motor winding, position sensor and intelligent circuit controller, which makes its mechanical structure more complex. Secondly, in terms of power output, brushless motors are mainly known for low noise, low heat emission, low loss and high performance, compared with traditional motors, the performance advantages of brushless motors are more obvious, while differential motors are limited by the reducer, and the power output will be reduced accordingly. Furthermore, in terms of noise, temperature and heat generation, brushless motors have lower noise and lower heat generation, and the temperature control of brushless motors is more accurate, compared to differential motors, which will have higher heat generation and higher noise. In addition, from the viewpoint of power transmission, brushless motor can achieve precise torque control, no maintenance, and more stable operation; while differential motor needs regular maintenance, and power transmission cannot meet the requirements of high precision. Considering from the control system, brushless motor can realize precise position control and can realize higher precision motion control; while differential motor has a more complex control system and more complicated motion control due to the limitation of the reducer. Finally, from the price consideration, brushless motor is more expensive, but its price is not much higher than the price of ordinary motor; while the price of differential motor is lower, but its maintenance cost is higher. To sum up, brushless motors and differential motors have their own advantages and disadvantages, and the right type of motor should be selected according to the actual situation and application scenario. Brushless motors have superior performance and can achieve higher precision motion control, but are more expensive, while differential motors are less expensive but have poorer performance in terms of power output, noise, and temperature control. Therefore, users should choose the most suitable motor type according to their needs.

News

Four Methods You Need To Know On Controlling A Stepper Motor

A stepper motor has a simple structure and can be speed-regulated over a wide range of frequencies, and its speed is not affected by the size of the load. As a specialist motor supplier, Leili will tell you several stepper motor control methods are described below. I. Tools / raw materials stepper motors, microcontroller, PLC, DCS II. Methods 1. Microcontroller control. A stepper motor is a digital control motor, its drive circuit works according to the control signal, it will pulse the signal into angular displacement, that is, to give a pulse signal, the stepper motor drive will rotate at an angle, so it is very suitable for microcontroller control. Through the microcontroller, control can be achieved by the pulse distribution to control the phase change sequence, from a given work mode positive sequence phase change power control of the motor (that is, to achieve the motor forward or reverse), by changing the interval between the two pulses to control the speed of the stepper motor and other adjustments. With ordinary 51 microcontrollers like AT89C2051 or STC12C1052 + THB7128 or THB6064, such chips to the combination can be. 2. Stepper motor controllers are easy to use with timing programs such as the TPC4-4TD, using the table settings without programming, you can set the pulse frequency, the number of pulses, and direction control data values, which can be achieved on the step motor drive speed control, position control, length control, timing control and a variety of basic operating functions. 3. The use of high-performance DSP, through the DSP using the bus voltage and motor running current, in the control algorithm to achieve closed-loop control of the stepper motor current, you can achieve accurate control of the step motor drive, but also through the control algorithm to improve the step motor drive in the low-speed vibration and noise. For example, the EZM series stepper drive system of Inax uses DSP control, which can get close to the servo operation performance in the low and medium speed section. 4. PLC-based control. The PIC programming output a certain number of square wave pulses, control the stepper motor angle, and thus control the servo mechanism feed, through the programming control pulse frequency to control the rotation speed of the motor, and then control the servo mechanism feed speed.

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      We are a manufacturing factory to provide you with high-quality B2B services. Welcome to batch customer consultation. Our company has a minimum order quantity requirement, which needs to be greater than or equal to 500 pcs. (the minimum order quantity of different products is different) Please be sure to inform the order quantity so that we can reply to your information.