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Introduction to the Stepper Motor Linear Actuator Attachment
The growing popularity of micro linear actuators can be attributed to the increasing demand for enhanced productivity in confined spaces. To cater to this trend, Oriental Motor has introduced a compact linear actuator attachment that can easily be mounted onto standard stepper motors.
According to Verified Market Reports, the Micro Linear Actuators Market was valued at USD 1.50 billion in 2023 and is projected to reach USD 4.20 billion by 2030, with a Compound Annual Growth Rate (CAGR) of 15.85% during the forecast period of 2023-2030. Claude 3.5 Sonnet predicts that the U.S. micro linear actuators market could experience a CAGR of approximately 9-11% over the next decade, resulting in a total growth of around 140-180% over the ten-year span.
This growth is primarily driven by rising adoption in industries such as medical and healthcare, industrial automation and robotics, consumer electronics, automotive (especially electric and autonomous vehicles), and aerospace/defense sectors.
**Key Features of the Stepper Motor Linear Actuator Attachment**
The Stepper Motor Linear Actuator Attachment is essentially a mounting adapter that comes equipped with a lead screw and a resin nut that exhibits excellent wear resistance. This attachment can be effortlessly attached to off-the-shelf stepper motors, similar to a gearhead, and transforms rotary stepper motion into precise linear motion (akin to an external type stepper motor linear actuator).
*Image: Mounting adapter for linear actuator for stepper motors*
For instance, when paired with a PKP Series 42 mm frame size stepper motor, the attachment demonstrates its versatility and ease of integration.
*Image: Stepper Motor Linear Actuator Attachment with a PKP Series 42 mm stepper motor*
One of the standout features of this attachment is its built-in axial bearing mechanism, which allows it to handle up to 100 N (with a 42 mm frame size stepper motor). This means axial loads can be directly applied. Additionally, the actuator provides an equivalent holding force to secure the load in place when power is removed or fails.
**Installation**
It’s important to note that the Stepper Motor Linear Actuator Attachment does not come with an anti-spin mechanism. This needs to be provided by the user. Without it, the nut will simply spin in place without moving. Below is an example of a finished assembly featuring the attachment, an anti-spin mechanism, support bearings, and a linear guide. The product doesn’t include limit switches or sensors, so these should be installed separately, such as on the linear guide.
**What Makes It Unique?**
The attachment can be directly mounted onto the stepper motor output shaft without requiring a coupling mechanism. This reduces the number of required components, saving space and expediting the design process compared to custom-built linear actuators. For example, by eliminating the coupling, fixed-side bearing, fixed-side block, and a standalone leadscrew, the component count is reduced from 9 to 6.
*Image: Compact design comparison*
**Applications**
At present, the Stepper Motor Linear Actuator Attachment is available for stepper motors in 42 mm and 30 mm frame sizes, with stroke lengths ranging from 30 to 300 mm, capable of transporting up to 10 kg (or 100 N thrust), and achieving speeds up to 180 mm/s. The repetitive positioning accuracy is ±0.05 mm.
**Compatible Lineup**
Different combinations of PKP Series high-torque stepper motors and CVD Series bipolar microstepping drivers can be used to create various types of stepper motor linear actuators. The diagram below illustrates the potential combinations using our extensive product lineup.
**Driver Options**
Drivers like the CVD Series bipolar microstepping driver can be paired with the stepper motors to optimize performance. Here are some options:
- **Pulse Input Type**: Ideal if you’re sending a pulse train signal from a host controller.
- **RS-485 Type**: Suitable for using a host controller (PLC) via network commands.
- **S Type**: Best for communication via SPI or when minimizing machine size.
- **Multi-Axis Type**: Used for controlling multiple motors via EtherCAT protocol.
**Application Examples**
For point-to-point applications where space is limited, such as in syringe pumps and test tube transfer systems, the Stepper Motor Linear Actuator Attachment proves to be a cost-effective solution.
*Image: Stepper motor linear actuators on a syringe pump*
In this application, three sets of stepper motors and linear actuator attachments ensure precise linear motion in a slim profile.
Another example showcases how a stepper motor and linear actuator attachment can transfer test tubes linearly from one location to another. An external guide is recommended for added stability.
*Image: Stepper motor linear actuator on a test tube transfer application*
If you have any questions or need further assistance, our team is here and ready to help. Let us know how we can assist you!