HOME

Media Center

Newsletter

Media Center

Why Drive Modules Are Becoming a Trend in Equipment Design

2026-06-13

In automated systems, the drive unit is the core element that creates movement in equipment. Functions related to overall motion quality, such as how much force and speed the equipment operates with, whether it can perform stable repetitive motions, and whether it can carry out tasks at precise positions, are all closely tied to the drive unit.

A drive unit typically consists of multiple components including motors, reducers, sensors, and controllers. When designing a drive unit, it is important to consider not only the performance of these individual components, but also the order and structure in which they are connected within the equipment. How components are arranged can affect the overall size of the equipment, the layout of its internal space, and ultimately the stability of operation and ease of maintenance.

From this perspective, drive modules, which integrate the elements needed for driving into a single system, have recently gained attention as a significant design option. This approach makes it easier to design and apply drive units, and is used to address both space efficiency and drive stability together.

In this article, we will look at how robot modules are structured, explore relevant application examples, and examine the conditions required in automated environments. We will then discuss why our BCSA V4 is well-suited for automated equipment design, focusing on its specific characteristics and the practical advantages it offers during design implementation.

Robot Drive Module 1 미래 로봇 시대를 주도하는 스마트 액추에이터

Drive Modules: From Axis Configuration to Application Examples

Unlike the conventional approach of selecting and assembling individual components separately, a robot drive module integrates the core elements of a drive unit into a unified form. Generally, the elements required for driving, including motors, reducers, sensors, and controllers, are organized as a single unit, and depending on the purpose and equipment structure, the configuration can be expanded into various forms ranging from single-axis modules to multi-axis modules.

The most fundamental form is the single-axis robot module. A single-axis module rotates in one direction or performs linear motion, handling a specific joint or a single moving axis within the equipment. It can be used in automated equipment that requires relatively simple operations such as repetitive transfer, position adjustment, and rotational drive. Its straightforward structure makes it easy to apply across a wide variety of systems, and it also helps simplify drive unit design and organize the internal space of equipment more efficiently.

For equipment that requires a wider range of motion or movement in multiple directions, multi-axis robot modules combining two or more axes are used. In a multi-axis configuration, the achievable range of motion and degrees of freedom vary depending on the number of axes and how they are arranged, enabling more complex posture control and compound movements.

Multi-axis configurations can be seen across a variety of applications, from automated equipment to robotic drive systems.

Robot Drive Module 2 미래 로봇 시대를 주도하는 스마트 액추에이터

In the wheel drive unit of an AGV, a two-axis drive configuration can be used to achieve both travel and directional changes. By independently controlling each wheel or left and right drive axes, the system can perform not only straight-line travel but also turning and directional changes in a more flexible manner. In this case, how the axes are configured also affects the mobility stability and driving control performance of the equipment.

For robots that require more complex joint movements, drive configurations with three or more axes can be applied. The shoulder joint of a humanoid robot, for example, is a part that demands a wide range of motion, including moving the arm forward and backward and extending it to the sides. To achieve this, rotation axes in different directions are combined, and the degrees of freedom of the robot arm vary depending on the range of rotation and the arrangement of each axis.

Robot Drive Module 3 미래 로봇 시대를 주도하는 스마트 액추에이터

In this way, robot drive modules can realize a wide range of movements, from simple repetitive motions to complex compound joint actions, depending on their axis configuration and structure. In automated systems, the size and placement of drive units directly affect how the internal space of the equipment is utilized, which is why the need for modularized drive units that can be configured efficiently is growing.

Smaller Drive Units: Stable Torque Output Is What Matters

As discussed above, robot modules are not only a structure for realizing various movements, but also a design approach for making efficient use of internal equipment space.

Because the core elements needed for driving can be integrated and arranged together, the connection structure and layout of the drive unit can be organized more simply than when individual components are configured separately. This helps reduce the spatial burden of the drive unit and, as a result, supports a more compact overall equipment design.

However, to ensure stable equipment operation, not only the size of the drive unit but also the driving performance required for actual tasks must be secured. Even if the drive unit is made smaller, if it cannot deliver the necessary torque stably, variations in task output may occur during repetitive operation, and motion stability may decrease under load conditions.

Therefore, drive units must be designed with both space efficiency and torque output in mind. They need to be compact enough to fit flexibly within the internal structure of the equipment, while also being capable of reliably generating the force needed for rotational or joint movements.

Robot Drive Module 4 미래 로봇 시대를 주도하는 스마트 액추에이터

What Makes Bonsystems’s Actuators Stand Out?

The actuator, a core component of a robot module, is responsible for generating the force needed for stable equipment movement. Even when the drive unit is made more compact through modularization, sufficient performance for the task must still be secured. This means the actuator must be capable of delivering the required torque output within a limited space.

Our BCSA V4 is a slim actuator developed to address exactly these requirements. It delivers high torque output relative to its installation footprint, allowing the drive unit of the equipment to be configured compactly. It is also designed to maintain stable drive performance even in high-load, repetitive operation environments.

In particular, the BCSA V4 incorporates a pinless design, which enhances competitiveness in terms of durability and productivity. The pinless structure eliminates roller pins, simplifying the internal configuration compared to conventional pin-type designs. The absence of roller pin components also reduces the burden of machining and assembly processes, which is advantageous for improving manufacturing efficiency and ensuring quality consistency.

These structural characteristics also prove beneficial in repetitive drive environments. Reducing the number of components and potential sources of assembly error lowers the likelihood of structural variation within the drive unit, helping maintain stable performance over extended operation. As a result, the pinless structure contributes to improved durability and productivity while supporting consistent product quality.

In this way, the BCSA V4 is an actuator that achieves both space efficiency and stable drive performance through its slim form factor, high torque output, and pinless structure. It can be applied to a wide range of drive systems including the wheel drive units of autonomous mobile robots, multi-joint robots, and automated systems, and we are also expanding its application into next-generation robotics fields such as humanoids.

Robot Drive Module 5 미래 로봇 시대를 주도하는 스마트 액추에이터

As the range of applications for automated systems and industrial machinery continues to grow, so do the requirements placed on drive units. As the performance standards expected of drive units rise and the range of operating environments expands, the role of slim actuators that combine space efficiency with reliable drive performance will only become more important. We will continue to advance the BCSA series in line with these developments, providing solutions capable of meeting the demands of a broad range of drive environments.

Bonsystems develops actuators and robot modules applicable to robots and automated equipment based on cycloidal reduction technology, and works alongside customers to review drive unit designs suited to their equipment structure and operating conditions.

If you share details such as the installation space and required torque of the equipment you are designing, we can propose the drive solution best suited to your requirements. If you have any further questions about the BCSA V4 for a stable drive system, please feel free to reach out through our website.

FAQ

Q. What does the pinless structure mean in practice for automated equipment operation?

Reducing the number of components also reduces the potential sources of error that can arise during assembly. This helps minimize quality variation between individual units, which is meaningful in environments where multiple machines are operated simultaneously, as consistent performance can be expected across all of them. In addition, as the internal structure becomes simpler, the likelihood of friction or play between components decreases, which can also have a positive effect in terms of long-term maintenance.

Q. On what basis should a single-axis or multi-axis robot module be chosen?

It depends on the movements the equipment needs to perform. If only repetitive motion in a single direction is required, a single-axis configuration may be sufficient. However, if simultaneous movement in multiple directions is needed, such as in AGV turning or robotic arm operation, a multi-axis configuration is required. As the number of axes increases, the degrees of freedom for achievable motion also increase.

At the same time, the way each axis interacts and is arranged has a greater impact on overall performance, which means that determining axis count alone may not be enough to reliably implement the desired motion. It is therefore recommended to review the type and range of motion alongside the spatial layout within the equipment.

Q. In what fields is the BCSA V4 currently being used, and in what directions might its application expand going forward?

The BCSA V4 is currently being used in robotic drive systems including the wheel drive units of autonomous mobile robots and multi-joint robots. It is well-suited to applications where stable torque output is needed within a constrained space, and can be applied to equipment where miniaturization of the drive unit and high output performance are both priorities.

Going forward, we expect its application to expand beyond automated systems and industrial machinery into next-generation robotics fields such as humanoid robots. As robot movements become more precise and structures more complex, the importance of slim actuators that combine space efficiency with stable output performance will only continue to grow.