DC Motor - also without Gear
Great variety of variants
DC Motor without Gear
GML series
BLDC motor without gear - an external rotor motor
New | BLDC motor without gear - an external rotor motor
With the M042022 and the M043022, we have added a new motor type to our Gearless Motors product category. Both are BLDC motors. They are special in that they are an external rotor motor. Their motor housing is made of metal, they work in the left/right direction with 24 volts, an output of 41 or 19.6 watts and at an idle speed of 6710 or 3800 revolutions per minute. Their nominal torque is 0.083 or 0.075 Nm.
In general, we can provide you with these 24V external rotor motors:
- From 22 mm to 92 mm in diameter
- From 3 to 260 watts of power
- Up to 9000 rpm
- Almost all can be equipped with a gearbox.
What is the difference in motor design between an external rotor motor and an internal rotor motor?
An external rotor motor consists of a stator with coils and a rotor with permanent magnets. In an internal rotor motor, the usual BLDC motors, the magnets are attached to the axle, which rotates on the inside of the stator coils (motor pot). With this external rotor motor, on the other hand, the magnets are attached to the motor pot on the outside of the stator coils. For this reason, not only the axle rotates in these motors, but the entire motor pot (housing). In addition, the air gap is smaller with external rotor drives because there is no rotor bandage. This air gap between rotor and stator also influences the surface thrust and thus torque and power.
What are the advantages of an external rotor motor?
The key advantage of an external rotor motor is the longer lever arm, since the force is generated further away from the center of rotation. The longer lever arm leads to higher torque. As a result, an external rotor motor can achieve much higher torques than an internal rotor motor with a comparable construction volume. An internal rotor motor is often designed with a gear in order to achieve the desired torque level. However, the gearing leads to a larger construction volume, mechanical losses and often to lower accuracy. So if the installation space is very limited and a high torque is required, an external rotor motor is often a good choice.
Topology of an External Rotor Motor
Topology of an Internal Rotor Motor
DC Motor without Gear >> Fields of application in industry and household
Drive technology for individually manufactured devices and gears, pumps, vibrating machines, vibration drives, mixers, toys, personal care devices, kitchen appliances, air conditioning systems, etc.
DC motor without gear >> recognized benefits
- Solid, robust construction
- Different sizes
- High speeds
- Simple power supply
- Well applicable to own devices
Gearless DC motors | Used in many industries
- Special mechanical engineering
- Hydraulic systems
- Pneumatic systems
- Manufacturing industry
- Building technology
- Consumer electronics
- Household appliance industry
- Medical technology
We invest a lot to stay a strong partner for drive systems
Gearless DC Motors | Questions and Answers
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Is an existing DC motor replaceable?
We operate an extensive drive test bench in Munich, with which we can also put third-party drives through their paces. Based on the data determined, we can usually suggest an adequate replacement motor.
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In what power range are DC motors?
Most of our DC motors are in a power range of up to 500 watts.
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In which voltage range do DC motors work?
Most of our DC motors are operated with 24 V DC or 12 V DC. Depending on the application, however, other voltages can also be implemented.
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Where do you get your DC motors from?
We source our DC motors from both Europe and Asia.
Do you need answers to other questions?
