A dual shaft motor, also referred to as a double shaft motor, is an electric motor designed with two shafts extending from opposite ends of the motor casing.
Understanding the Design
Unlike standard motors that have a single output shaft, a dual shaft motor has "two shafts" that exit the motor case. This means the motor's rotor assembly has extensions on both the front and back, allowing mechanical power to be transferred from both sides simultaneously.
As described in a reference, if you power the motor and hold the case steady, "there is one place where you can stand and see one shaft sticking out of the motor and pointed directly at you and turning clockwise." The key difference here is that a dual shaft motor presents this view on both ends.
Why Use a Dual Shaft Motor?
The presence of a second shaft offers significant advantages and versatility in various applications:
- Driving Multiple Loads: The most straightforward use is to power two different mechanical systems or components from a single motor source.
- Mounting Accessories: The second shaft provides a convenient location for mounting accessories like:
- Encoders: To provide feedback on motor speed or position without interfering with the primary drive shaft.
- Brakes: To hold the motor shaft firmly when power is off.
- Tachometers: To measure rotational speed.
- Mechanical Balancing: In some setups, using both shafts can help distribute the load or facilitate system balancing.
- Alternative Connections: It offers flexibility in machine design, allowing connections from either side depending on the layout.
Key Characteristics
- Two Output Shafts: The defining feature, exiting opposite ends of the motor housing.
- Increased Versatility: Enables driving multiple loads or adding accessories easily.
- Compact Solution: Provides two drive points from a single motor, saving space compared to using two separate motors.
Dual shaft motors are commonly found in industrial machinery, robotics, pumps, fans, and automation systems where their unique design offers practical benefits for integration and control.
