Koford Engineering offers a new line of 10-pole 5.07-in. (129 mm) brushless high performance motors with continuous stall torque up to 398 oz-in. with heat sink, and peak motor efficiency of 94%. The motor features low cogging for a slotted motor and a sinusoidal back emf for low torque ripple when used with sine drives. […]
Brushless Motors
Get the latest product news, technical info, and FAQs about brushless motors.
Frameless, brushless torque motor from H2W Technologies
H2W has developed an un-housed arc segmented frameless brushless torque motor with low inertia moving coil assembly for high angular acceleration applications. The TWR-070-410-1150-3PH, a rotary 3-phase brushless motor, also known as a rotary servo motor, is a direct drive motor that is suitable for limited or unlimited, closed loop servo, rotary motion applications. It […]
New 120-W brushless motor/drive with optional right-angle gear from Oriental Motor
Oriental Motor has expanded its BMU Series with the introduction of the 120-W (1/6 hp) IP66 new connector type brushless motor combined with a hollow shaft right angle hypoid JH type gear head, featuring a stainless steel shaft. The right-angle hollow shaft hypoid JH gear achieves IP66 class protection through the use of a stainless […]
Frameless Brushless Torque Motor
H2W Technologies has developed an unhoused arc segmented frameless brushless torque motor (TWR-070-410-1150-3PH) with low inertia moving coil assembly for high angular acceleration applications. The rotary 3-phase brushless motor, also known as a rotary servo motor, is a direct drive motor that is ideal for limited or unlimited, closed loop servo, rotary motion applications. It […]
32 brushless motors from Pittman available via e-Commerce site
Pittman® a business unit of AMETEK Precision Motion Control, has released the EC044A and EC042B Series brushless motors into its 24-Hour Pittman Express e-Commerce store. Both EC044A and EC042B Series come with the new E30 encoder and PLG42S planetary gear that yield an outstanding level of performance in a truly compact assembly. The EC044A is […]
BEI Kimco’s brushless motors meet centrifuge requirements for reliable, quiet operation
BEI Kimco has met the high performance motor requirements for laboratory centrifuge machines. Centrifuges are used in biology, chemistry and hospital labs to rapidly spin and separate liquid samples into layers for analysis. These machines have varying requirements in motor functionality and size, as well as speeds that can range from just a few thousand […]
Field oriented control vs. sinusoidal commutation
Brushless AC (BLAC) motors are driven with sinusoidal AC currents, and due to skewed magnets and sinusoidally distributed windings in their stators, they also produce sinusoidal back EMF. Sinusoidal commutation is a common way to control BLAC motors, as it provides a very consistent torque output with little torque ripple. But at high speeds, sinusoidal […]
Direct-drive motors need direct-position sensing
by Mark Howard, Managing Director, Zettlex Direct drives differ from traditional drive arrangements. These motors impart many design advantages, but perform best with specialty feedback. Direct-drive motors have been around for a while, but only recently have OEMs and system integrators begun to leverage the advantages of this technology. Over the last few years, there’s […]
FAQ: What is trapezoidal back EMF?
The primary distinction between brushless DC (BLDC) motors and brushless AC (BLAC) motors is their back EMF waveform. BLDC motors typically have a trapezoidal back EMF, while BLAC motors (also referred to as permanent magnet synchronous motors, or PMSM) have a sinusoidal back EMF. The shape of a motor’s back EMF is important, because it […]
FAQ: What is sinusoidal back EMF with sinusoidal current?
Both brushless DC (BLDC) and brushless AC (BLAC) motors are permanent magnet, synchronous devices. They both produce torque and speed through the interaction of a rotating magnetic field in the stator and permanent magnets on the rotor. But while they have many similarities, differences in their stator construction produce different back EMF waveforms and result […]