シグマ電子工業 List of Products and Services

The "SB-7707RB Series" is a battery-powered field balancer for elastic rotors that incorporates a multi-speed and multi-surface method. By adopting our unique "multi-speed and multi-surface measurement" method, it reduces vibrations across the entire range at any rotational speed (number of measurement surfaces: 1 to 4). Its compact and lightweight design makes it convenient for transportation during business trips or within factories. 【Features】 ■ Capable of balancing rigid and elastic rotors ■ Reduces the hassle of adjusting correction weights ■ Pass/fail judgment function based on JIS B 0905 ■ Choice of CCLD type or charge type sensors ■ Easy report creation and management of measurement data ■ Convenient battery-powered design for portability *For more details, please refer to the PDF materials or feel free to contact us.

The "SB-8806RB Series" is a lightweight and compact field balancer for general rotating bodies/precision grinding machines that operates on battery power. Sigma's balance measuring instrument boasts ease of use and high precision, achieving both high versatility and a compact body. It can operate continuously for 8 hours on battery power, making it convenient for transportation within the factory. 【Features】 ■ Battery-powered ■ Reduces the hassle of adjusting correction weights ■ Pass/fail judgment function according to JIS B 0905 ■ Option to choose between CCLD type/electrical charge type sensors ■ Equipped with a USB port ■ High precision with a resolution of 0.001μm up to 400,000 min–1 ■ Ability to save screen data as photo files on microSD ■ Optional overall vibration meter and FFT analyzer can be installed *For more details, please refer to the PDF materials or feel free to contact us.

The "SB-8001 Series" is a field balancer for precision grinding machines that measures while rotating the grinding wheel on the machine, allowing for the correction of imbalance not only in the grinding wheel itself but also in the entire grinding wheel spindle system. By suppressing the imbalance of the grinding wheel spindle system, it stabilizes grinding resistance, leading to improved surface quality, extended machine lifespan, and reduced grinding wheel wear. 【Features】 ■ Stabilizes grinding resistance by suppressing the imbalance of the grinding wheel ■ Reduces grinding resistance, improving surface roughness and enhancing machining accuracy ■ Extremely high measurement accuracy ■ Simultaneous display of phase and amplitude ■ Enables speedy and accurate corrections *For more details, please refer to the PDF document or feel free to contact us.

The "SB-8000 Series" is a field balancer designed for general rotating bodies/precision grinding machines, thoroughly pursuing ease of use and compact size. It demonstrates particularly high performance at high rotational speeds. It is suitable for balancing high-speed slicers, machine tool spindles, high-speed spindle motors, centrifuges, blowers, and more. You can choose from three types according to your needs. 【Features】 ■ Extremely high measurement accuracy ■ Displays phase and amplitude up to two surfaces ■ Enables speedy and accurate corrections ■ Capable of correcting high-speed rotating machinery ■ Equipped with a USB port *For more details, please refer to the PDF materials or feel free to contact us.

The "SB-7705R Series" is a field balancer for elastic rotors that incorporates a multi-speed and multi-surface method to suppress higher-order bending mode imbalance vibrations generated by high-speed spindles. It successfully reduces three-dimensional (XYZ direction) vibrations across the entire operating speed range. Additionally, it is equipped with basic frequency analysis and bearing diagnostic functions, making it easy to detect damage to the inner ring, outer ring, cage, and rolling elements of bearings. 【Features】 ■ Measurement speed is approximately twice as fast, with accuracy about five times greater (compared to our company) ■ Capable of balancing both rigid and elastic rotors ■ Simultaneously suppresses vibrations in three directions (XYZ direction) ■ Easy report creation and measurement data management ■ CE marking and RoHS compliant *For more details, please refer to the PDF materials or feel free to contact us.

This technical document introduces the measurement and correction of imbalance in rotating bodies. It explains the causes of imbalance, the three major causes of imbalance, and the definition of balancing accuracy, using diagrams and formulas over a total of 63 pages. 【Contents (partial)】 ■1. Introduction ■2. What is imbalance? ■3. Causes of imbalance ■4. Three major causes of imbalance ・4-1 Defects in design ・4-2 Defects in materials ・4-3 Defects during manufacturing or assembly *For more details, please refer to the PDF document or feel free to contact us.

This technical document introduces a new balancing correction method for high-speed spindles. In February 2002, we successfully commercialized the "Field Balancer" incorporating the multi-speed and multi-plane method. As a result, we reduced vibrations across the entire operating range to less than one-fifth of that achieved by conventional technology, and further shortened the balancing time to less than one-eighth. Here, we will discuss the effectiveness of the multi-speed and multi-plane method and provide application examples. [Contents (partial)] ■1. Introduction ■2. Classification of Rotors ■3. In high-speed rotation, rigid rotors transform into elastic rotors ■4. Dangerous speeds of elastic rotors and their drawbacks ■5. Conventional balancing correction methods *For more details, please refer to the PDF document or feel free to contact us.

This technical document introduces balancing tests and balancing test machines. It explains the realities of balancing high-speed rotating bodies, the advantages and disadvantages of horizontal soft-type balancing test machines, and field balancing, all in 77 pages. 【Contents (partial)】 ■ Imbalance generates centrifugal force when rotating ■ Effects of imbalance on rotating machinery ■ Causes of imbalance ■ Workpieces undergoing balancing ■ Methods of balancing *For more details, please refer to the PDF document or feel free to contact us.

This technical document introduces preliminary knowledge about field balancing. It includes precautions for handling piezoelectric accelerometers, methods for selecting balancing techniques and correction factors, and a list of field balancers offered by our company. [Contents (partial)] ■1. Introduction 　・1-1 Preliminary knowledge of mechanical vibrations 　・1-2 Precautions for handling piezoelectric accelerometers 　・1-3 Considerations when installing rotational sensors ■2. Investigating the target machine before balance correction 　・2-1 Considerations for balancing rotating machinery with rotational irregularities 　・2-2 Analysis of unbalanced vibrations 　・2-3 Harmonic vibration analysis 　・2-4 Multi-speed analysis 　・2-5 Frequency analysis using FFT *For more details, please refer to the PDF document or feel free to contact us.

This technical document introduces a new balance correction method for high-speed spindles (multi-speed, multi-surface method). It discusses the effectiveness and impact of the multi-speed, multi-surface method based on case studies, as well as explaining the classification of rotors, which is a crucial point for balancing rotating bodies (rotors), and the concept of critical speed. 【Contents】 ■1. Introduction ■2. Rotors and Critical Speed ■3. Conventional Balance Correction Methods ■4. Development of the Multi-Speed, Multi-Surface Method ■5. Field Balancer for Elastic Rotors ■6. Conclusion ■7. References *For more details, please refer to the PDF document or feel free to contact us.

This technical document introduces methods for reducing vibrations during the machining of irregularly shaped objects. It explains the issues related to machining irregularly shaped objects, the necessary preparations for field balancing, and methods for balance correction. *For more details, please refer to the PDF document or feel free to contact us.*