The Pittman has introduced slotless brushless DC servo motors for the medical and biotech, semiconductor processing, business and computer equipment, and automation industries.
The motor's slotless design minimises magnetic cogging, or reluctance torque. Slotless motors also exhibit low inductance and high current bandwidth that provides precise control, especially during rapid acceleration in incremental motion applications, claims the company. The winding heat transfer abilities promote thermal efficiency and transient load capacity.
The motor series 3400, 4400, and 5400 are available in three frame sizes such as NEMA (National Electrical Manufacturers Association) 14, 17, and 23 and incorporate three-phase slotless stators, four-pole rotors, and neodymium magnets as standard. Depending on model, the motors can achieve maximum continuous torque up to 43oz/in (ounce per inch). All versions feature internal hall-sensor feedback motor commutation, high starting torque, and variable speed control with appropriate drive electronics.
Other standard features include rugged construction, shielded ball bearings, and precision-ground hardened stainless steel shafts. Among available options are gearboxes, encoders, drives, and brakes. Modifications to the motor shaft, winding, and mechanical mounting allow for customisation to suit application-specific requirements.
