The AirTAC AirTAC SDA40X35N Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 35mm 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.
The AirTAC SDA40X35N 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 actuators. The 40 mm bore features a hard-anodized inner wall and a 16 mm piston rod.
End-of-travel deceleration relies on a fixed NBR bumper rather than an adjustable air cushion, meaning operators cannot tune the end-stop impact. For high-energy cycles, adding an external shock absorber or slowing the approach speed is advised. This specific SKU lacks a piston magnet, so it cannot host AirTAC reed or electronic switches for position sensing.
| Model | AirTAC SDA40X35N Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 35 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).
| 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.
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×35 | 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).
Secures aluminum engine blocks onto machining centers using 628.3 N of extend force, fitting neatly into tight tooling columns.
Drives mechanical arms to tuck corrugated box flaps prior to sealing, leveraging the 35 mm stroke for rapid cycling.
Actuates routing flaps on logistics sorting lines to push parcels into secondary chutes at speeds up to 500 mm/s.
Selecting this 40 mm bore actuator provides a safe working load of roughly 377 N (about 60% of the 628.3 N push at 0.5 MPa), translating to a vertical lift capacity of approximately 32 kg with a 2:1 safety margin. If your application requires less force, the smaller SDA32 generates 402.1 N of push at 0.5 MPa; stepping up to the SDA50 yields 981.7 N for heavier payloads.
When ordering, confirm the 40 mm bore, 35 mm stroke, PT1/8 port, and the female M8x1.25 rod-end thread. Note that a standard cylinder drifts when air pressure is lost or the valve is centered, as the fixed bumper only decelerates near stroke end rather than locking the load. To hold a vertical position securely, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
At 0.5 MPa, this 40 mm bore double-acting cylinder provides 628.3 N of push and 527.8 N of pull. At 0.7 MPa, push increases to 879.6 N. The theoretical maximum push is 128 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa, with a speed range of 30-500 mm/s.
No, end stops use a fixed NBR bumper that decelerates the piston but cannot be field-adjusted like an air cushion. Additionally, this SKU lacks the internal magnet required for sensing; you must select an -S option variant to mount AirTAC reed or electronic switches along the body grooves.
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