The SMC MSQB10A is a compact rack-and-pinion pneumatic rotary table designed for precise angular movement in automated machinery, handling systems, inspection stations, and compact assembly equipment. It belongs to SMC’s MSQ series, a well-established rotary table platform that combines a rigid table structure with pneumatic actuation, making it more suitable for direct workpiece mounting than a simple rotary actuator. In SMC’s ordering logic, “B” identifies the basic type, “10” identifies size 10, and “A” indicates the version with adjustment bolt. For the size 10 basic type with adjustment bolt, SMC lists a body weight of 500 g, excluding the weight of any auto switch.
The MSQB10A is intended for applications where engineers need repeatable rotary motion in a compact footprint while keeping the system simple, economical, and easy to integrate. Unlike electric indexing tables, this model uses compressed air as the drive medium, which makes it attractive for plants that already rely on pneumatic systems and want reliable rotary positioning without adding servo drives, cables, feedback hardware, or more complex commissioning work. The MSQ structure also provides a flat rotating table, which is useful when the rotating component itself must support fixtures, tooling, sensors, or small transferred parts.
Technical Summary
The specification summary below is based on SMC’s official MSQ series catalog and operation manual.
| Item | Description |
|---|---|
| Model | SMC MSQB10A |
| Product Family | MSQ Series |
| Type | Rack-and-pinion pneumatic rotary table |
| Series Classification | Basic type |
| Size | 10 |
| Code Meaning | B = Basic type, 10 = Size 10, A = With adjustment bolt |
| Working Fluid | Air, non-lube |
| Maximum Operating Pressure | 1.0 MPa |
| Minimum Operating Pressure | 0.1 MPa |
| Ambient and Fluid Temperature | 0 to 60°C, non-freezing |
| Angle Adjustment Range | 0 to 190° |
| Maximum Rotation | 190° |
| Rotation Time Adjustment Range | 0.2 to 1.0 s per 90° |
| Port Size | M5 x 0.8 |
| Cushion Type | Rubber bumper / adjustment bolt type |
| Body Net Weight | 500 g, excluding auto switch |
What makes the MSQB10A commercially useful is that it sits in the practical middle ground between a very small vane actuator and a more elaborate electric indexing solution. It is compact, but still offers a real rotary table structure. It is simple, but still gives the user angle adjustment through the adjustment bolts. It is also light enough for compact machine modules, while still being robust enough for light-duty industrial indexing and part orientation duties. The weight of 500 g is particularly useful for machine builders because it helps with bracket design, moving mass calculation, packaging estimates, and logistics planning.
Product Design and Working Principle
The MSQB10A uses a rack-and-pinion mechanism to convert linear piston movement into rotary table motion. That construction matters because it supports a rigid top table and stable load mounting. In practical machine design, this means the unit can be used not only to rotate a shaft, but also to rotate a fixture, holder, nest, or small transfer platform. This is one of the main reasons the MSQ family is widely used in automation equipment where the rotating surface itself is part of the production process.
The adjustment bolt configuration gives the MSQB10A flexibility that many fixed-angle rotary devices do not offer. SMC specifies an angle adjustment range of 0 to 190° with a maximum rotation of 190°, and the catalog explains that various rotation ranges can be set using the adjustment bolts. This means the product is not limited to a single factory-defined position pair such as only 90° or only 180°. Instead, it can be adapted to the actual geometry of the fixture or machine station, which is very useful when the final stop angle depends on tooling layout, sensor position, guarding clearance, or part presentation requirements.
From an integration standpoint, the MSQB10A is straightforward. SMC lists air (non-lube) as the working fluid, with a maximum operating pressure of 1.0 MPa, a minimum operating pressure of 0.1 MPa, and an operating temperature range of 0 to 60°C without freezing. For size 10, the port size is M5 x 0.8, which suits compact pneumatic circuits and small valve manifolds. SMC also publishes a rotation time adjustment range of 0.2 to 1.0 seconds per 90° for stable operation of the adjustment-bolt type, which gives designers a practical window for tuning speed and shock level in real machine use.
Why the MSQB10A Is a Useful Engineering Choice
The MSQB10A is not the most sophisticated rotary device in SMC’s range, and that is exactly why it is valuable. Its strength is not excess complexity. Its strength is delivering dependable rotary motion in a small, understandable, and easy-to-maintain format. For many OEMs and maintenance engineers, that is preferable to overengineering a simple turning task.
In small assembly machines, the MSQB10A can be used to rotate a component from one inspection face to another. In packaging or parts-feeding equipment, it can be used to change product orientation before transfer. In sensor-based stations, it can move a part between loading and checking positions. In light clamping or holding fixtures, it can provide repeatable turning action while keeping the structure compact. Because the table format is rigid and mountable, the unit is suitable wherever the rotating surface needs to carry a practical load rather than merely transmit torque through a shaft. These kinds of uses match the design intent of SMC’s MSQ rotary table family.
Another advantage is maintenance simplicity. Pneumatic rotary tables like the MSQB10A are familiar to most industrial technicians. They fit standard compressed-air systems, do not require servo parameter setting, and do not introduce electronic motion hardware unless the user adds external sensors or auto switches. For many factories, especially those prioritizing uptime and parts availability, that is an important decision factor. SMC’s documentation also shows that the MSQ series has established maintenance and operation guidance, which supports long-term serviceability in ordinary industrial environments.
Specification Value in Real Use
The table below focuses on what the published specifications mean in practice. The interpretation is based on SMC’s official data for the MSQ series and the MSQB10A ordering structure.
| Specification | Practical Meaning |
|---|---|
| Basic type structure | Better suited to cost-sensitive automation where standard accuracy is sufficient |
| Size 10 body | Appropriate for compact fixtures and light-duty rotary handling tasks |
| Adjustment bolt design | Allows rotation end setting within the available adjustment range |
| 0 to 190° range | Useful when the required stop angle is not limited to a single fixed standard |
| 500 g body weight | Easy to integrate into compact modules and helpful for mounting and shipping calculations |
| Air, non-lube operation | Simple fit for standard pneumatic systems without extra lubrication requirements |
| M5 x 0.8 ports | Convenient for compact air piping layouts |
| 0.2 to 1.0 s per 90° | Gives a realistic speed-adjustment window for stable operation |
Conclusion
The SMC MSQB10A is a compact pneumatic rotary table built for practical industrial use. It is best understood as a basic-type size 10 MSQ rotary table with adjustment bolt, intended for compact automation tasks that need stable, repeatable angular motion without the cost or complexity of electric rotary indexing. Its official body weight of 500 g, excluding auto switch weight, makes it easy to incorporate into small machine frames and tooling assemblies. Combined with air non-lube operation, M5 x 0.8 ports, 0 to 190° angle adjustment, and a maximum operating pressure of 1.0 MPa, the MSQB10A is a solid choice for economical rotary positioning in general automation equipment.
