The simple permanent magnet brushed dc
motor is an impressive component. Continuous improvement has delivered
powerful and flexible performance at the very lowest cost.
Advantages of a brushed dc motor include low initial cost, high reliability, and simple control of motor speed.
Rare earth magnet motors can be a cost effective option when high speed, high power density, long life or small size are important. This low cogging motor range offers greater power compared with other brushed motors of the same volume. This is achieved using very thin Neodymium magnets and high density windings.
The Heavy Case series motors provide the ideal solution for use in applications which require output power ratings up to 150 Watts. The robust low inertia construction ensures reliable operation in industrial environments combined with fast response and accurate control.
Brushless dc motors are commonly used
where precise speed control, low electrical noise or long life is necessary.
They are typically 75-80% efficient and often use a permanent magnet
internal rotor, three phases of driving coils and hall effect sensors.
Brushless motors do not spark making them ideal for EMC sensitive applications.
To reduce the effects of radiated noise we can offer DC motors with an internal varistor ring.
The effects of electromagnetic noise can be reduced by fitting capacitors and chokes close to the dc motor.
We can design and manufacture wiring looms which incorporate twisted power leads, electromagnetic shielding and ferrite beads, all of which offer significant reductions in EMI.
Input Power: 4W
Temperature rise: 60ºC
Insulation resistance: 100M Ohms at 500VDC
Dielectric strength: 840V AC 1min
Bipolar – this is a sophisticated way to
drive the motor and achieves higher torque and speed than unipolar versions.
The phases inside the motor are always on but the polarity is reversed as
the stepping sequence dictates.
Bipolar drives often provide additional features such as micro stepping for very smooth operation and higher voltage chopper drives to achieve higher speeds. This motor normally has 4 flying leads.
Unipolar – this is the simplest way to drive a stepping motor. The phases inside the motor are either on or off, they are not reversed. Unipolar motor are used in many applications where the higher torque and speed of bipolar versions are not needed. A unipolar motor is identified by 5 or 6 flying leads.
Output gears and pinions - Supplied and fitted to customer
specification in both machined and injection moulded format.
Looms - A Rotalink package often includes a wiring loom made to the customers’ specification. Typical looms include
strain relief, various wire gauges, crimps, connectors, heatshrink and micro-switches.
Pulleys - Rotalink offers a wide range of machined timing pulleys; the standard ranges includes XL, MXL, T2, T2.5 and T5 and are available on a short lead time as part of the motor/gearbox package.
Mounting Plates - To help you interface our product with your application Rotalink offers a range of mounting plates.