MICROMO Medical

DC Motors Information

Data Sheets

• Coreless DC Motors
• Flat Coreless DC Motors
• High Power PMDC Motors

DC Motors

MICROMO' DC Motors differ from conventional, iron rotor DC Motors in that they are equipped with an ironless, self-supporting, skew-wound copper coil. This construction reduces the iron in the rotor, minimizing eddy current losses. This leads to efficient gains for longer life in battery applications. The rotor also rotates smoothly without cogging.

Selected Examples: Prosthetic Leg, Perfect Vision

Brushless DC Motors Information

Data Sheets

• Brushless DC Servomotors
• Brushless DC Motors with Integrated Electronics
• Flat Brushless DC Motors
• Sensorless Brushless DC Motors
• Brushless DC Servomotors with Integrated Motion Controller

Brushless DC Motors

This series of Brushless DC Servomotors is also available in an autoclavable, sterilizable version and is ideally suited for application in laboratory and medical equipment. The Brushless DC Servomotors design is modified by changing to an all stainless steel version of the motor, adjusting the lubrication, epoxy coating the motor coil, and conformally coating the PCB boards.

Sterilizing conditions for these Brushless DC Servomotors are:

• Temperature of 134°C +/- 2°C
• Water vapor pressure of 2.1 bar
• Relative humidity of 100%
• Duration of cycle of 20 minutes
• Rated for a minimum of 100 cycles

Servo amplifiers are available to drive the Brushless DC Servomotors.
Other drive circuits for motion control can be offered to correspond to
customer requirements.

Selected Example: Automated Pill Dispenser

Stepper Motors Information

Data Sheets

• 2-Phase Stepper Motors

Stepper Motors

MICROMO's two-phase Stepper Motors are constructed with two different technologies. The ADM series motors are constructed with a magnetized disk magnet hub. Both designs reduce the number of components needed for assembly and provide for high reliability and outstanding shock and vibration resistance. These unique Miniature Stepper motor designs result in a reliable, powerful, and quiet motor in a very small size. The stepper motor can be controlled and positioned without feedback. This lowers cost (no encoder) and control circuit complexity.

Selected Examples:

• Laser Resurfacing Handset
• Head Mounted Vision Systems

DC Gearmotors Information

Data Sheets

• Flat DC Gearmotors
• Flat Brushless DC Gearmotors
• Ø3 mm Sensorless Brushless DC Gearmotors

DC Gearmotors

MICROMO offers three types of DC Gearmotors, including a flat coreless Gearmotor, the flat brushless version (both with plastic, spur gearheads) and a sensorless, Brushless Gearmotor with a plastic, planetary gearhead. All three types of Gearmotors differ from conventional, iron rotor DC Motors in their coreless winding construction, and their diameter range is 3mm to 26mm.

Selected Example: Portable Infusion Pump

Precision Gearheads Information

Data Sheets

• Planetary Gearheads
• Spur Gearheads
• Zero-backlash Spur Gearheads
• Hybrid Gearheads

Precision Gearheads

MICROMO spur and planetary Gearheads are ideal for combination with the MICROMO DC Motor program. Their compact construction and quiet operation are impressive. The zero-backlash spur Gearheads are perfect for positioning applications. Options and modifications to accommodate special requirements supplement an extensive standard program.

Encoders Information

Data Sheets

• Integral Magnetic Encoders
• Magnetic Encoders
• Optical Encoders

Encoders

A range of different Encoders is available for applications requiring an accurate control of motor velocity, direction of rotation and positioning. The performance of a drive or servo system depends on the precision and reliability of the servo components available. MICROMO's incremental shaft Encoders are based on the optical, magnetic or capacitive design principles. To reduce cost and package size, the Encoders are mounted directly on the shaft or integrated into the motor itself.

Linear Actuators Information

Data Sheets

• Linear Actuators

Linear Actuators

MICROMO offers precision miniature Linear Actuators to create maximum force in minimal space. Custom electronics allow force, speed and position control.