FMI Frameless Motors

About

FMI by Rozum Robotics is a series of compact enhanced performance brushless motors. FMI is a rotor plus stator kit—a three-phase brushless motor can be encapsulated into any housing of your choice. The direct drive brushless motor has no bearing, or shaft, or endbells. The motor is directly integrated into the rotating shaft of the machine. The hollow-shaft design allows for easy integration. 

Whats Inside

Rotor Assembly

Moving part of the frameless motor. The assembly contains magnets with alternating poles

Support Ring

The magnets are manufactured from rare-earth metals (neodymium or samarium-cobalt).

Frameless Motor

The stator assembly is the non-moving component of the FMI frameless motor. By design, the assembly is a 20 mm high lamination stack with coil-supporting teeth. The stack consists of multiple 0.5 mm thick electrical steel plates. For improving thermal conductivity, it is covered with a special polymer compound.

Power

Power 48v

Thermal Sensor

For overheating protection, FMI-series frameless motors are equipped with a thermal sensor—a negative temperature coefficient (NTC) thermistor (model NXFT15). The sensor is integrated into the stator winding and is in direct contact with it. When the thermistor senses increase in the temperature of the stator winding, its resistance decreases.

  • Rotor Assembly

    Moving part of the frameless motor. The assembly contains magnets with alternating poles

  • Support Ring

    The magnets are manufactured from rare-earth metals (neodymium or samarium-cobalt).

  • Frameless Motor

    The stator assembly is the non-moving component of the FMI frameless motor. By design, the assembly is a 20 mm high lamination stack with coil-supporting teeth. The stack consists of multiple 0.5 mm thick electrical steel plates. For improving thermal conductivity, it is covered with a special polymer compound.

  • Power

    Power 48v

  • Thermal Sensor

    For overheating protection, FMI-series frameless motors are equipped with a thermal sensor—a negative temperature coefficient (NTC) thermistor (model NXFT15). The sensor is integrated into the stator winding and is in direct contact with it. When the thermistor senses increase in the temperature of the stator winding, its resistance decreases.

Frameless Motor

The stator assembly is the non-moving component of the FMI frameless motor. By design, the assembly is a 20 mm high lamination stack with coil-supporting teeth. The stack consists of multiple 0.5 mm thick electrical steel plates. For improving thermal conductivity, it is covered with a special polymer compound.

Rotor Assembly

The rotor assembly is the moving part of the frameless motor. The assembly contains magnets with alternating poles and a support ring. The magnets are manufactured from rare-earth metals (neodymium or samarium-cobalt).

Thermal Sensors

For overheating protection, FMI-series frameless motors are equipped with a thermal sensor—a negative temperature coefficient (NTC) thermistor (model NXFT15). The sensor is integrated into the stator winding and is in direct contact with it. When the thermistor senses increase in the temperature of the stator winding, its resistance decreases. The NTC thermistor provides temperature sensing with accuracy of 0.1 degree and has the following characteristics:

  • Resistance at 25°C: 10 kOhm
  • Beta constant at 25/85: 3434 K
  • Maximum power: 100 mW
  • Package/case: bead

Models

* - under testing currently. First supplies are scheduled at Q2 2019 

PRICE REDUCES WITH QUANTITY

Service life of our servo motors is 35,000 hours. Rozum Robotics also provides a 1-YEAR WARRANTY. Average lead-time 8 weeks. Motors are shipped worldwide


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