Airtac SDA Ultra Thin Cylinder SDA40X30-S
The AirTAC SDA Ultra Thin Cylinder SDA40X30-S is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 30mm stroke, PT1/8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
- BoreØ40 mm
- Stroke30 mm
- Port sizePT1/8
- Acting typeDouble acting
- Rod threadM8×1.25 (F) / M14×1.5 (B)
- CushionFixed NBR bumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SDA Ultra Thin Cylinder SDA40X30-S
The AirTAC SDA40X30-S is a double-acting, single-rod compact cylinder engineered to deliver 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. Its riveted assembly merges the barrel, rear cover, piston, and rod into an ultra-short unit, significantly reducing axial mounting depth where a conventional round-body actuator would be too long. The 16 mm piston rod utilizes a female M8x1.25 thread, while the 40 mm bore features a hard-anodized inner wall and a PT1/8 air port.
This specific model includes the -S option, meaning it has a built-in piston magnet for position sensing. You can mount AirTAC reed or electronic switches directly into the grooves around the body to track the 30 mm travel. End-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, which effectively absorbs shock but requires you to slow high-speed approaches or add external shock absorbers for heavy loads.
Airtac SDA Ultra Thin Cylinder SDA40X30-S Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA40X30-S |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 mm |
| Acting type | Double acting |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 male (B) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
| Max standard stroke | Up to 120 mm |
Specifications follow the official AirTAC SDA compact-cylinder datasheet. Confirm against the product label before installation. Port thread: PT (standard). Rod: female thread (blank) / male thread (B).
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SDA Ultra Thin Cylinder SDA40X30-S
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×30 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| B | Male-thread piston rod (omit = female-thread rod). |
Thread: PT standard. Related SDA-family variants: SSA (single-acting push), STA (single-acting pull), SDAD (double rod), SDAJ (adjustable stroke), SDAT (duplex), SDAW (duplex-end).
Where the Airtac SDA Ultra Thin Cylinder SDA40X30-S Is Used
PCB Depaneling Router
Provides the steady 628.3 N linear feed required to plunge a router bit into assembled printed circuit boards, utilizing the 30 mm stroke for compact vertical zoning.
Carton Flap Folding
Drives the mechanical arms that tuck minor flaps on packaging lines, where the short riveted body saves valuable axial space within tight conveyor side frames.
Press Fit Bushings
Presses small metal bushings into aluminum housings using the 16 mm rod, relying on the -S magnet to trigger an electronic switch once the 30 mm insertion depth is reached.
Is the Airtac SDA Ultra Thin Cylinder SDA40X30-S the Right Cylinder?
When sizing this 40 mm bore actuator, evaluate your force requirements carefully. If you need less thrust, stepping down to the SDA32 provides 402.1 N of push at 0.5 MPa; if your application demands more power, stepping up to the SDA50 yields 981.7 N at the same pressure. Keep in mind that a standard compact cylinder will drift and cannot hold a load if air pressure drops or the valve is centered—the fixed bumper only decelerates the piston near the stroke end, acting neither as a lock nor a brake. For suspended loads, integrate an external rod lock or a pilot-operated check valve. Confirm your ordering essentials: 40 mm bore, 30 mm stroke, PT1/8 port, female rod thread, and the built-in magnet.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Short-body depth vs. a round-body cylinder
- ✓ Port/thread type (PT)
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
- ✓ Side load — avoid on a compact rod
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the short piston rod.
- check Very long strokes are unsuitable for the compact body.
- check Front/rear covers are riveted — do not dismantle.
- check Installation by qualified personnel per AirTAC docs.
Airtac SDA Ultra Thin Cylinder SDA40X30-S FAQ
This double-acting 40 mm bore cylinder generates 628.3 N push and 527.8 N pull at 0.5 MPa. At 0.7 MPa, it outputs 879.6 N push and 738.9 N pull. The theoretical maximum push force is 128 kgf at 1.0 MPa, with an operating pressure range of 0.15-1.0 MPa and a proof pressure of 1.5 MPa.
It uses a fixed NBR bumper at each end to decelerate the piston, which is not an adjustable air cushion, so you should slow high-speed approaches or add external shock absorbers for heavy loads. The -S option provides a built-in piston magnet, allowing you to install AirTAC reed or electronic switches in the body grooves to confirm the 30 mm stroke position.
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