Applications in the healthcare market such as dental tools, respiratory and ventilation equipment, and other medical devices pose unique challenges for the motors that drive them, and manufacturers often must make trade-offs between performance and size. But with Delta Line’s new high-speed series of slotless, brushless DC (BLDC) motors, manufacturers can now achieve the speed, power, size, and efficiency they need without compromise – so their devices perform better and last longer, while satisfying the need for doctor and patient comfort.
The optimized design of the Delta Line' slotless BLDC motors give them best-in-class performance for high-speed applications. These slotless BLDC motors can operate at speeds of 70,000 rpm, with options available that allow speeds over 100,000 rpm.
These incredibly high speeds are possible thanks to a specific design of the magnets and windings, which helps ensure a low temperature rise. The mechanical design includes balancing and the use of a preloaded bearing system, which also contributes to thermal management, extending the life of the motor and reducing the temperature of the motor housing. And a cooler motor housing means less heat is transferred to the user’s device (such as a dental drill or ventilator), making it more suitable and comfortable for doctor and patient. The specific rotor balancing, along with the slotless motor design, also ensures that our new high-speed BLDC motors have low noise emissions, to meet health and safety standards and requirements for patient comfort.
The new high-speed series BLDC motors are available with power ratings up to 100 W in a 16mm diameter size and up to 150 W in a 22 mm diameter size. And with efficiencies up to 92%, they’re ideal for battery-powered applications where long charge and battery life are critical. In addition to their high-speed capabilities, these motors have a mechanical time constant as low as 1 to 2 ms for very fast responsiveness and high acceleration.
Delta Line’s new high-speed series BLDC motors can be customized to meet specific requirements – from custom shaft or flange variations to special coil or cable designs. The high-speed motors can also be provided with temperature sensors, hall sensors, or sensorless commutation, and with high-speed encoders, gearboxes, and drivers. Delta Line’s design and engineering staff are also able to design motors that integrate directly into a customer’s system, for the most compact, efficient device possible.
Advantages at a glance:
- Operating speed up to 70,000 rpm; option for speed over 100,000 rpm
- Power up to 150 W in 22 mm diameter; 100 W in 16 mm diameter
- Efficiency up to 92%
- Low temperature rise, even at high-speed operation
- Low noise