High power/size ratio ironless-rotor DC motors
An
API Portsecap product story
Edited by the Engineeringtalk editorial team
Nov 8, 2001
The tiny 30GT range motors from Portescap, which are just 62mm long, offer a continuous power rating of 70W and a typical maximum operating speed of 11,000 rpm
A continuous power rating of no less than 70 watts is offered by 30mm diameter ironless-rotor DC motors in the new 30GT range from miniature motor and gearbox expert, Portescap.
These tiny motors, which are just 62mm long, combine their high power/size ratio with extended operating life, thanks to the use of high-quality graphite-copper brushgear and precision ball bearings.
Portescap 30GT motors are currently offered, as standard, for use on 24V or 48V supplies.
Custom motors for other supply voltages are, however, available to order.
The typical maximum operating speed for all models is 11,000 rpm, with 24V units capable of developing continuous torques of up to 83 mNm, a figure which rises to 104 mNm for 48V motors.
All 30GT motors can operate well in excess of their rated torque for short periods.
Benefits of the Portescap ironless technology used in these new motors include low friction, low starting voltage, absence of iron losses, good thermal dissipation and a linear torque-speed characteristic.
All of these factors facilitate the use of the units in high-performance drive and servo systems.
Their high efficiency means that they are also an ideal choice for applications in battery-powered equipment.
To complement its small, but powerful, 30GT ironless-rotor motors, Portescap offers an extensive range of standard and custom miniature gearboxes.
Designed for simple and speedy attachment to the motor, these gearboxes are available in both spur and planetary versions, with a wide range of reduction ratios.
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