STOGRA motor Germany STOGRA model STOGRA price

STOGRA motors are named for their armature winding and field winding connected in series. Single-phase series-wound motors are AC/DC universal motors; they can operate on either AC or DC power supplies. Single-phase series-wound motors are widely used. Their advantages include high speed, high starting torque, compact size, light weight, resistance to stalling, and a wide operating voltage range. Speed control via voltage adjustment is simple and easy to implement.

STOGRA motor performance

Since the 20th century, 80s, with the development of integrated circuits, power electronics, and AC variable-speed drive technologies, permanent magnet AC servo drive technology has made remarkable progress. Major electrical manufacturers worldwide have successively launched their own AC servo motor and servo drive product lines, continuously improving and updating them. AC servo systems have become the main development direction for contemporary high-performance servo systems, putting traditional DC servo systems at risk of obsolescence. Since the 90s, commercialized AC servo systems worldwide have adopted fully digital-controlled sinusoidal motor servo drives. Developments in AC servo drives in the transmission field are advancing rapidly. Compared with DC servo motors, permanent magnet AC servo motors offer the following main advantages: 1. Brushless and commutator-free, ensuring reliable operation and low maintenance requirements. 2. Convenient heat dissipation from the stator windings. 3. Low inertia, facilitating improved system responsiveness. 4. Suitable for high-speed, high-torque operating conditions. 5. Smaller size and weight for the same power rating.

STOGRA motor principle

A stepper motor is an open-loop control element that converts electrical pulse signals into angular or linear displacement. Under non-overload conditions, the motor's speed and stopping position depend solely on the frequency and number of pulses, unaffected by load variations. Each pulse signal causes the motor to rotate by one step angle. This linear relationship, combined with the characteristic that stepper motors exhibit only periodic errors without cumulative errors, makes speed and position control using stepper motors very simple. Although stepper motors are widely used, they cannot be used directly like standard DC or AC motors. They require a control system comprising dual-ring pulse signals and power drive circuits. Effective use of stepper motors is not straightforward, as it involves multidisciplinary knowledge in mechanics, electrical engineering, electronics, and computing. While many manufacturers produce stepper motors, few possess specialized technical personnel for independent development and R&D. Most manufacturers have only ten to twenty employees and lack even basic equipment, remaining in a stage of blind imitation. This causes considerable trouble for users in product selection and application. In view of this, we take the widely used variable-reluctance stepper motor as an example to describe its basic working principle, hoping to assist users in selection, application, and overall machine improvement.

STOGRA motor FAQ

Motor issues: 1. Abnormal operation of the main drive motor, bearing overheating. Abnormal operation of the main drive motor; slip motors vibrate intensely during operation, causing bearing overheating. Disassemble the clutch armature and magnetic pole rotor to check whether the motor bearings severely lack lubricating grease, leading to serious bearing wear and degraded motor performance. Replace damaged bearings and replenish with lubricating grease. Under normal conditions, clean and lubricate all components in this assembly to ensure proper operation of the main drive motor; 2. Periodic decrease in host speed. This situation is mostly caused by mechanical faults. Speed-control motors have multiple rubber rollers, each supported by bearings. A bearing fault at either end of any rubber roller can cause periodic drops in the host speed. In severe cases, host movement becomes more erratic, requiring immediate bearing replacement. Additionally, monitor the condition of bearings and lubrication points on all host rollers (including plate, blanket, and impression cylinders), as faults here will also affect printing speed.

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