CL Coreless DC Motors
- 3 series with frame diameters of 29, 40 and 66 mm
- Rated torque ranges from 10 up to 100 mNm (1.4 up to 14 oz‑in)
- Rated power ranges from 3 up to 25 W continuous
- Gearheads to boost torque output are available
Example Application Solutions
Continuous Passive Motion (CPM) Finger Exerciser
Joint tendon rehabilitation is expedited using motorized robotic devices that continuously exercise the affected digits. Such devices must be easy to use, lightweight, battery powered for ambulatory patients, and enable precise, controlled smooth movements. The continuous passive hand and finger manipulator (CPM) is one example. The gear motor drives a small telescoping leadscrew linear actuator, which reciprocally drives a glove-like assembly that holds the patient’s hand. The result is smooth and continuous extension and flexure of the patient’s joints.
Allied Motion's CL40 coreless DC motor coupled with an efficient S38 spur reduction gearhead forms a compact gear motor that can efficiently drive the CPM.
Pipetting System for Automated Blood Analyzer
Blood analysis requires a sequence of steps that if done manually are very time-consuming. An automated pipetting subsystem can speed the analysis. In such a system a set of pipettes is positioned to aliquot blood samples from primary test tubes and deposit them in secondary tubes. The subsystem must not only be fast but also accurate and smooth in handling the samples.
Allied Motion’s small CL series of coreless DC motors equipped with gearheads drive miniature leadscrews to withdraw or deposit precise amounts of fluid from or to the sample tubes. Quantum series servo motors power the X-Z mechanical translation system that precisely positions the pipetting system during operation.
Precision Peristaltic Pump
Positive displacement peristaltic pumps are a simple yet efficient means of handling liquids or gases in medical, laboratory, and industrial applications. The bench-top, multichannel laboratory type of pump shown here can provide fluid flows from μl/minute up to 2.0 liters per minute.
The heart of this pump is a precision brushless DC KinetiMax motor developed by Allied Motion engineers to be compact, efficient and quiet while providing long trouble-free service.
Programmable Syringe Pump
Small portable and battery-operated syringe pumps are used extensively to administer infusions associated with chemotherapy, post operative and chronic pain control, antibiotics and other medications given parenterally. Typical flow rates for these types of syringe pump can range from 0.1 to 200 ml/h, so the motors used must have excellent speed controllability.
Miniaturization of these units for use by ambulatory patients requires reliable small motors like Allied Motion’s CL coreless DC motors, which are highly efficient to conserve battery life.
Allied Motion’s CL series of compact coreless rotor DC motors exhibit low inertia and maximized performance through the use of a uniquely wound and formed coreless rotor coupled with high strength permanent magnets. CL coreless DC motors are available in three diameters (29, 40, and 66 mm) with output power rated up to 25 W continuous.
Being of coreless rotor design, the CL DC motors have virtually zero iron loss and no magnetically preferred rotor position (cog-free rotation). They also offer minimized torque ripple, and low rotor inertia, all of which work in concert to enable highly controllable, smooth speed operation, and quick starting and stopping ability.
A precious-metal commutation system is used in the CL29 and CL40 series for improved starting at low applied voltage.
CL coreless motors are ideal for use in medical devices, laser scanners, high-end audio equipment, scale models, dispensing systems, small pumps, and similar applications where their smooth speed operation, quick start and stop capability, and highly efficient operation are of benefit.