What are compact pneumatic cylinders and how do they work?
Compact pneumatic cylinders are precision-engineered actuators that use compressed air to generate linear motion within a reduced footprint, making them ideal for high-performance automation in confined spaces. Designed for applications with strict space constraints, short-stroke cylinders ensure efficient and reliable motion control. Their lightweight design, compact dimensions, and robust construction make them essential in scenarios requiring both efficiency and durability.
SMC's range of compact cylinders, including the CQ2, JCQ, and C55 series, offers unparalleled versatility. For instance, the CQ2 series is a versatile all-rounder with options for long strokes and customisable bore sizes. The JCQ series further enhances productivity with its ultra-lightweight design, while the C55 series complies with ISO 21287 standards, ensuring seamless integration into global systems.
Types of compact pneumatic cylinders
ISO compact cylinders
Designed to meet ISO 21287 standards, these space-saving cylinders provide consistent performance and compatibility with global systems. They are commonly used in industries such as packaging, automation, and food processing.
They offer benefits such as:
- Standardised dimensions for easy integration
- Robust construction suitable for various industrial environments.
Example Product: The SMC C55 Series offers excellent ISO compatibility with a wide range of stroke options.
Compact cylinders with pre-mounted valves
These space-saving cylinders include pre-mounted valves to simplify pneumatic system designs and reduce installation time. The main benefits include:
- Space-saving integrated valve design minimises piping complexity
- Streamlined connections for efficient operation.
Example Product: The SMC CVQ Series combines a cylinder and solenoid valve for maximum compactness and efficiency.
Free mount cylinders
Designed to provide versatile mounting options, these cylinders simplify installation and integration into complex systems. The main benefits include:
- Multiple surfaces for direct mounting
- Suitable for compact spaces with varied configurations.
Example Product: The SMC CU Series features a space-saving rectangular body ideal for direct mounting.
Compact cylinders with linear guides
These compact linear actuators feature integrated guides to handle lateral loads and maintain precision, making them ideal for applications requiring high accuracy and stability. The main benefits include:
- Non-rotating function for guided movements
- Enhanced load-bearing capacity for use in robotics, medical devices, or CNC machines.
Example Product: The SMC MXZ Series provides precise motion control with an integrated linear guide.
Compact cylinders with lock unit
These cylinders feature an integrated locking mechanism for secure position retention, making them highly suitable for applications requiring precise and reliable positioning. The main benefits include:
- Locking mechanism to maintain positions
- Ideal for applications requiring position retention without the need for a continuous air supply.
Example Product: The SMC RLQ Series offers built-in air cushions and locking mechanisms to ensure safety and stability in critical applications.
Typical applications of compact cylinders
- Pick-and-place operations: Compact cylinders enable precise and efficient movement in automated material handling systems
- Equipment with space constraints: Ideal for devices requiring compact actuators without compromising performance
- Robotics and robot arms: Compact cylinders enhance precision and stability in robotic applications by reducing weight and space requirements, which optimises the performance of robotic arms. This weight reduction minimises inertia, enabling faster and more accurate movements in tasks such as material handling, assembly, and precise positioning in automated systems.
Benefits of SMC's compact cylinders
Compactness: Engineered with reduced dimensions to save space and simplify integration, enabling versatile applications even in tight or restricted environments.
Customisation: Extensive options for mounting, rod modifications, and environmental adaptability (e.g., spatter-resistant versions).
Global Standardisation: ISO-certified designs ensure seamless integration.
How to choose the right compact air cylinder?
There are several key factors to consider when selecting compact air cylinders for your application:
- Bore size and stroke: The bore size and stroke length determine the cylinder's power and range of motion. These specifications should be calculated based on the required force and movement.
- Mounting options: Choose a mounting type that suits the design constraints of your system. Compact cylinders offer diverse mounting configurations to ensure flexibility.
- Load stopping impact: Assess the loads the cylinder will have to handle, including any stopping impacts. If needed, use shock absorbers to ensure smooth operation and protect workpieces.
- External forces: Consider potential external forces, such as side loads or other loads that could affect the cylinder.
- Operating speed and air flow: Evaluate the cylinder's speed requirements and ensure the pneumatic circuit is designed to provide sufficient air flow for optimal performance.
- Environmental factors: Address conditions such as moisture, dust, and temperature extremes. Using components suited for specific environments will maximise the cylinder's service life.
Optimising compressed air quality and following maintenance recommendations are essential steps to ensure reliable performance and longevity for your pneumatic systems.
Need help selecting the right compact cylinder for your application? Contact our experts for personalised advice.