Pneumatic cylinder
SDA compact pneumatic cylinder
SDA compact pneumatic cylinder
Specifications
- Material
- Aluminum alloy
- Operation pressure
- 0.1-0.9Mpa
- Working Medium
- Air
- Working temperature range
- -5-60 degree
SDA Series Compact Pneumatic Cylinder
The SDA Series Compact Pneumatic Cylinder is designed for applications that require reliable linear movement within limited installation space.
Its short rectangular body provides a considerably smaller axial footprint than many conventional profile or tie-rod cylinders. The cylinder can therefore be installed inside compact machines, assembly fixtures, packaging equipment and automated production modules where space is restricted.
The SDA family includes double-acting, single-acting, double-shaft and adjustable-stroke configurations. Bore sizes range from 12 mm to 100 mm, while optional magnetic pistons allow external auto switches to detect the piston position.
Key Features
Compact Short-Body Design
The SDA cylinder provides linear movement within a short overall body length. This makes it suitable for machine designs where a conventional cylinder would require too much axial installation space.
Wide Bore Range
The supplied ordering guide lists cylinder bore sizes from:
12 mm to 100 mm
This broad range allows the cylinder to cover lightweight positioning tasks as well as applications requiring greater output force.
Multiple Operating Configurations
The SDA product family includes:
- Standard double-acting operation
- Single-acting spring extension
- Single-acting spring retraction
- Double-shaft double-acting operation
- Double-shaft adjustable-stroke operation
Optional Stroke Adjustment
The SDAJ version includes an adjustment mechanism for changing the effective operating stroke.
The listed adjustment amounts are:
- 5 mm
- 15 mm
- 25 mm
This is useful when the machine’s stopping position must be fine-tuned without replacing the complete cylinder.
Magnetic Piston Option
A magnetic piston can be selected for use with compatible external auto switches.
Position sensing can provide:
- Extended-position confirmation
- Retracted-position confirmation
- PLC input signals
- Machine-sequence control
- Cycle monitoring
- Interlocking
- Fault detection
Three Rod-End Styles
Available piston-rod end configurations include:
- Female or internal thread
- Male or external thread
- Non-threaded rod
This allows the cylinder to connect to different fixtures, tools and machine mechanisms.
Internal Impact Reduction
The internal structure drawing identifies anti-impact cushions that help reduce direct piston contact with the end covers.
The supplied page does not identify these as adjustable pneumatic cushions. Applications involving high kinetic energy may require external impact-control components.
Integrated Body Mounting
The rectangular cylinder body is suitable for direct installation in compact equipment, reducing the need for large external mounting accessories.
General Specifications
Item | Specification |
Product series | SDA |
Cylinder type | Compact short-body pneumatic cylinder |
Bore range | 12–100 mm |
Acting options | Double acting or single acting |
Double-shaft option | Available |
Adjustable-stroke option | Available |
Adjustment amounts | 5, 15 and 25 mm |
Magnetic piston | Optional |
Rod-end configurations | Internal thread, external thread or no thread |
Working medium | Confirm before ordering |
Operating-pressure range | Confirm for selected model |
Proof pressure | Confirm for selected model |
Operating-temperature range | Confirm for selected seals and switch |
Piston-speed range | Confirm for selected bore and load |
Air-port size | Confirm according to bore |
Standard strokes | Confirm according to series and bore |
Cushioning | Internal anti-impact cushion shown |
Mounting dimensions | Confirm with model-specific drawing |
SDA Double-Acting Internal Structure
The standard SDA drawing identifies the following principal components:
No. | Component |
1 | Rear cover |
2 | C-type retaining ring |
3 | O-ring |
4 | Anti-impact cushion |
5 | Piston |
6 | Piston O-ring |
7 | Anti-impact cushion |
8 | Cylinder barrel |
9 | Front-cover seal ring |
10 | Front cover |
11 | Piston rod |
12 | Piston-rod nut |
Functions of the Main SDA Components
Rear and Front Covers
The end covers close the pressure chambers and support the internal piston and rod components.
C-Type Retaining Ring
The retaining ring secures the end-cover assembly within the compact cylinder body.
Piston and Piston O-Ring
The piston separates the two air chambers. The piston seal maintains the pressure difference needed for double-acting movement.
Piston Rod
The rod transfers pneumatic force from the internal piston to the external machine mechanism.
Front-Cover Seal Ring
The seal helps retain compressed air around the piston rod and limits the entry of external contaminants.
Anti-Impact Cushions
The cushions reduce direct mechanical impact near the ends of the stroke.
Cylinder Barrel
The barrel forms the main internal pressure chamber and compact external body.
SSA Single-Acting Internal Structure
The SSA spring-extension drawing identifies:
No. | Component |
1 | Rear cover |
2 | C-type retaining ring |
3 | Anti-impact cushion |
4 | Piston |
5 | Piston O-ring |
6 | Compression spring |
7 | Cylinder barrel |
8 | Silencer |
9 | Cover O-ring |
10 | Front cover |
11 | Piston rod |
The internal compression spring provides the return or extension function when air pressure is removed. The silencer allows the spring-side chamber to breathe while reducing the entry of contaminants and limiting exhaust noise.
STA Single-Acting Internal Structure
The STA spring-retraction drawing identifies:
No. | Component |
1 | Rear cover |
2 | C-type retaining ring |
3 | Cover O-ring |
4 | Silencer |
5 | Cylinder barrel |
6 | Compression spring |
7 | Piston |
8 | Piston O-ring |
9 | Anti-impact cushion |
10 | Front-cover seal ring |
11 | Front cover |
12 | Piston rod |
Frequently Asked Questions
What is an SDA compact cylinder?
It is a short-body pneumatic actuator designed to produce linear movement in restricted installation spaces.
What bore sizes are available?
The ordering guide specifies a bore range from 12 to 100 mm.
Is the SDA cylinder double acting?
The standard SDA is double acting. SSA and STA single-acting versions are also available.
What is the difference between SSA and STA?
SSA is the single-acting spring-extension type, while STA is the single-acting spring-retraction type.
What is SDAD?
SDAD is the double-shaft double-acting version.
What is SDAJ?
SDAJ is a double-shaft cylinder with mechanical stroke adjustment.
What adjustment amounts are available?
The listed adjustment amounts are 5, 15 and 25 mm.
Can magnetic switches be installed?
Yes. Select the S magnetic-piston option and specify compatible auto switches separately.
What does the B rod-end code mean?
B identifies the external-thread piston-rod end.
What rod-end configurations are available?
Internal thread, external thread and non-threaded configurations are listed.
Does the cylinder have adjustable air cushioning?
The drawing shows anti-impact cushions but does not identify adjustable pneumatic cushions. Confirm the exact cushioning arrangement for the selected model.
What are the pressure and temperature limits?
These values are not included on the supplied page and should be confirmed before publication or operation.
What port sizes are used?
Port sizes are not shown on the supplied page. They should be confirmed according to the selected bore.
Can an SDA cylinder carry a side load?
Significant side loading should not be applied directly to the piston rod. Use an external guide or floating joint.
Can it operate with water, oil or another gas?
The working medium is not specified on the supplied page. Confirm material and seal compatibility before using any medium other than compressed air.

