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Ready to ShipThe term 'bipolar nema 23' refers to a specific class of bipolar stepper motors. NEMA is the acronym for the National Electrical Manufacturers Association, and the number 23 indicates the mounting face width in inches. This face is typically 2.3 inches wide, giving the motor its classification. Bipolar stepper motors have two coils or windings per phase, requiring two electrical connections to each coil. They are known for providing high torque at low speeds and are commonly used in applications where precise control over motor movements is necessary. Therefore, a bipolar NEMA 23 stepper motor features higher torque and precision than its unipolar counterpart.
The following are the common types of bipolar NEMA 23 motors available:
23HS30-2804S
This is a high-torque, 2-phase bipolar stepper motor. It has a holding torque of 3.0 kg-cm or 26.5 mN-m, and its rotor has 1.8° steps. With a 30 mm frame size, it fits most applications where space and power are limited. This motor is compatible with most stepper drivers, including A4988 and DRV8825, and a PID controller.
23HS30-2804
The 23HS30-2804 is a high-torque, 2-phase bipolar stepper motor. It has a holding torque of 3.0 kg-cm or 26.5 mN-m, and its rotor has 1.8° steps. With a 30 mm frame size, it fits most applications where space and power are limited. This motor is compatible with most stepper drivers, including A4988 and DRV8825, and a PID controller.
23HS20-2204
The 23HS20-2204 is a type of stepper motor that includes a 2-phase bipolar system. It features 1.8° of step angle, so 200 steps are required for one full revolution, and 2, 4, 6, 8, 12, and 16 mm pulleys can be used to achieve the results. Notice only a small portion of this NEMA motor's specifications, many other details are also available, including parametric constraints and non-standard characteristics. The best of these stepper motors is that they are highly efficient and thus useful in modern engineering applications.
23HS40-4004
The 23HS40-4004 is a stepper motor with an included 2-phase bipolar system. It achieves 1.8° angles for every step, thus demanding 400 steps for completing a full revolution. It employs 4, 6, 8, 12, and 16 mm pulleys, which can be employed to obtain these steps. There are several specifications to this NEMA motor; apart from this, some include mechanical and electrical non-standard parameters. It is among the most efficient NEMA motors handy for all modern engineering applications.
Some of the common features and materials used in making bipolar NEMA 23 motors strong and durable include:
A strong stator construction is important in achieving even this as the frame is used to support the electromagnetic windings. Often, robust materials like steel laminations or high-quality iron are used in the construction of the stator. These materials not only support the windings but also help in giving a motor its durability characteristic.
Bipolar nema 23 stepper motor bearings are meant to provide smooth operation and durability. When the motors' quality of the bearings is low, this leads to increased friction, which causes wear and tear. As a result, most NEMA motors use ball bearings or angular contact to reduce friction and provide motor durability.
The durability of the motor can optionally be increased by using more sophisticated winding techniques, like bifilar or multilayer winding. Such types of windings help to generate more torque with the same amount of motor size; hence, the heat generated is much less. Less heat levels helps in reducing thermal damage, leading to motor life increasing as a result.
As much as the stator and windings contribute to the stepper motor's functioning, the rotor is still integral to the entire motor. The rotors of NEMA 23 motors are designed in high-strength magnets, often neodymium, to improve the torque. Further, the components of the rotors are balanced and designed to ensure sturdy construction to mitigate chances of vibrations that can affect motor functioning.
Many of the bipolar NEMA 23 motors are designed to include heat dissipation options such as fins or a more accessible exterior. Therefore, these features will help in the regulation or decrease of temperature during series operation and thus prevent any possible damage due to overheating, not forgetting that this aids in increasing motor life and durability.
Typically, many NEMA 23 motor cases are made of corrosion-resistant materials like anodized aluminum or stainless steel. Corrosion will affect the motor's elements and components, resulting in reduced functionality. Cases with high corrosion resistance will ensure the motor sustains itself in much harsher working conditions.
As mentioned earlier, alloy steel is commonly used in NEMA 23 motors. It is a well-regarded material for its strength and durability. Therefore, these motors can sustain significant stress and overtime wear, making them suitable for heavy-duty engineering tasks.
When selecting these types of motors known as bipolar NEMA 23 steppers, buyers should take note of the following parameters to achieve the required results:
As a rule of thumb, torque must be assessed since it dictates the holding and pulling power of a motor. Higher torque is more suitable for denser and harder materials. Check for torque on a motor chart or database and compare it with the required torque for the application.
Power rating is very important in ensuring that electrical machines effectively work and can avoid failure. Generally, motors used for fine or low-powered devices tend to have lesser power ratings, but those devices meant for high force or heavy industries will have higher ratings. Only after assessing the power requirements of the application at hand should a motor be selected.
Stepper motor drivers control the motors by providing the desired current, voltage, and pulse sequence. Different types of these drivers are applied for different types of motors; for example, some drivers apply a current that can be PWM, while others cannot. That is why a motor and a driver should be compatible with each other, and one should not only select a motor for the selected driver but also select a driver for the motor in use.
Heat generation during motor operation has to be recognized, especially when the motor is going to run non-stop for longer periods. If this is the case, a motor with the appropriate heat dissipation features and lower heat generation, as a byproduct of its operation, is ideal for consideration.
Determine the requirements of an application regarding motor specifications and performance. Define the step angle for motor precision, the frame size for physical fit concerns, and the number of phases for electrical complexity.
Know the type of load, whether its nature is constant or variable, and if it requires high starting torque or not. This information determines the torque configuration and type of motor eyeing to attain. It is essential to consider both the static and dynamic load of the system. Static loads refer to the weight of the object to be moved, while dynamic loads refer to any forces that might cause the motor to stop functioning, such as friction or quick acceleration. A good rule of thumb is to always over-torque the motor by at least 20% to allow for unexpected conditions and changes in load. Avoiding runout or using pulleys can also help increase the motor's efficiency.
A1: These motors are found in 3D printers, CNC machines, robotics, medical devices, and precision equipment where control and power are required.
A2: Bipolar motors need two wires for each coil. Hence, they need a more intricate wiring setup as compared to unipolar motors but provide higher torque.
A3: It illustrates the motor's ability to provide force while rotating. Greater torque means the motor can move substances that are heavier or require more effort.
A4: Yes, because of their step movements, they are fairly simple and easy to control. The position, speed, and acceleration can easily be controlled by the motor controller.
A5: Yes, they can. But they should not be continually stressed. They may also be designed with cooling features to help them in heat dissipation when used in a high-power state.
