Bonfiglioli motor Germany Bonfiglioli model Bonfiglioli price

Bonfiglioli motors refer to motors with speeds exceeding 10000r/min. Due to their high speed, compact size compared to standard-power motors, direct connection to the prime mover eliminating traditional gearboxes, and low moment of inertia, they offer advantages such as high power density, effective material savings, high transmission efficiency, low noise, and fast dynamic response.

Bonfiglioli motor installation

Before motor installation, measure the insulation resistance between the stator winding and the housing, as well as between the main and auxiliary windings; the resistance at ambient temperature shall not be lower than 10MΩ. Otherwise, dry the windings, for example, using the bulb heating method. The motor shaft extension diameter is ground to standard tolerance dimensions at the factory; therefore, the inner diameter of the user-supplied pulley or other mating parts must comply with national standard accessories. During installation, push in by hand or gently tap the shaft extension platform; do not strike heavily with a hammer, as this may vibrate and break the centrifugal switch, causing failure to start, bearing damage, and increased operating noise. Before mounting the motor to the driven machinery, carefully inspect the motor feet for cracks or issues affecting mechanical strength; if any problems are found, installation and use are prohibited. The motor must be mounted on a flat plate with fixing holes and secured with bolts matching the foot holes. For safety, before operation, connect the grounding wire to the motor's grounding screw and ensure reliable grounding; the grounding wire shall be copper with a cross-sectional area of no less than 1m㎡. Use a time relay to replace the centrifugal switch. The centrifugal switch used in single-phase asynchronous motors is a mechanical switch; when the motor speed reaches above 70% of the rated speed, the contacts open to disconnect the auxiliary winding (starting winding) or the starting capacitor. If the centrifugal switch is damaged or if low rural voltage frequently burns out the starting capacitor, a delay relay (220V type) can be used instead. Connect the two wires from the internal centrifugal switch together, and insert the normally closed contacts of the delay relay in series externally (to enhance contact durability, connect multiple contact groups in parallel or add an intermediate relay). The coil power supply for the time relay can be connected in parallel with the main winding, with the action time adjusted to 2~6s. Practical experience shows good results, avoiding starting capacitor burnout even under low rural voltage conditions, resulting in high user satisfaction.

Bonfiglioli motor classification

Motors are classified into reactive and Sawyer types. A Sawyer linear stepper motor consists of a stationary part (called the reaction plate) and a moving part (called the mover). The reaction plate is made of soft magnetic material with uniformly distributed teeth and slots. The motor mover consists of permanent magnets and two coil-carrying magnetic poles A and B. The mover is supported by an air cushion to eliminate mechanical friction during movement, ensuring smooth operation and improved positioning accuracy. The maximum travel speed of this motor can reach 1.5 m/s, acceleration up to 2g, and positioning accuracy over 20 micrometers. Two Sawyer linear stepper motors assembled perpendicular to each other form a planar motor. By applying different combinations of control currents to the motors in the x direction and y direction (Figure 3), the motor can perform arbitrary geometric trajectory movements in the plane. Large automatic plotters are new devices combining computers and planar motors. Planar motors can also be used in laser cutting systems, with control precision and resolution reaching tens of micrometers.

Bonfiglioli motor advantages

Motor advantages: Compared to asynchronous motors, permanent magnet synchronous motors have significantly higher efficiency under light load, with a wide high-efficiency operating range. In the range of 25% to 120%, efficiency is greater than 90%. The rated efficiency of permanent magnet synchronous motors can meet the Level 1 energy efficiency requirements of current national standards, which is their biggest advantage in energy saving compared to asynchronous motors. In actual operation, motors rarely run at full power when driving loads. This is because: firstly, designers usually determine motor power based on the extreme operating conditions of the load, which occur rarely, and further reserve power margin to prevent motor burnout under abnormal conditions; secondly, manufacturers typically provide additional power margin beyond user requirements to ensure reliability. Consequently, most actually operating motors work below 70% of rated power, especially when driving fans or pumps, where motors usually operate in the light load region. Asynchronous motors have very low efficiency under light load, whereas permanent magnet synchronous motors maintain high efficiency even in the light load region.

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