Airtac SDA Ultra Thin Cylinder SDA40X30-N
The AirTAC Airtac SDA Ultra Thin Cylinder SDA40X30-N 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)
About the Airtac SDA Ultra Thin Cylinder SDA40X30-N
The AirTAC SDA40X30 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 a highly abbreviated unit, drastically reducing axial mounting depth compared to conventional round-body designs. The bore is hard-anodized and sealed with a two-way piston structure.
This specific model features a 16 mm piston rod and female M8x1.25 rod-end thread. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion. Operating speeds span 30-500 mm/s, and the body lacks a piston magnet, meaning it cannot host magnetic switches without upgrading to the -S variant.
Airtac SDA Ultra Thin Cylinder SDA40X30-N Technical Specifications
| Model | Airtac SDA Ultra Thin Cylinder SDA40X30-N |
|---|---|
| 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-N
| 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-N Is Used
Injection Mould Ejection
Provides the 628.3 N push stroke required to knock finished plastic parts out of injection moulding tools within a tight press footprint.
Package Diverting
Actuates a routing gate on a packaging conveyor, using its 30 mm stroke to redirect cartons at high cycling rates.
PCB Clamping Jig
Secures circuit boards during automated soldering, applying 527.8 N of retract pull to hold a fixture arm firmly in place.
Is the Airtac SDA Ultra Thin Cylinder SDA40X30-N the Right Cylinder?
When sizing this 40 mm bore, stepping down to the SDA32 yields 402.1 N of push at 0.5 MPa, while stepping up to the SDA50 provides 981.7 N. For this SKU, a safe working load is approximately 377 N (60% of the 0.5 MPa figure), translating to a vertical lift capacity of about 32 kg with a 2:1 safety margin. Confirm your ordering essentials: 40 mm bore, 30 mm stroke, PT1/8 port, female rod thread, and no magnet.
If your application must hold a load vertically or resist drifting when air pressure drops or the valve is centered, this cylinder alone will not suffice. The piston will drift, as the fixed NBR bumper only decelerates near the stroke end and acts purely as an end stop, never as a lock or brake. You must integrate an external rod lock or a pilot-operated check valve to secure the payload.
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-N FAQ
At 0.5 MPa, the push force is 628.3 N and the pull force is 527.8 N. At 0.7 MPa, push is 879.6 N and pull is 738.9 N. The theoretical maximum push force is 128 kgf at 1.0 MPa, with a proof pressure of 1.5 MPa.
No, this specific SKU does not include a piston magnet, so it cannot trigger AirTAC reed or electronic switches. You must select the -S option code variant to enable position sensing along the body grooves.
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