The AirTAC AirTAC SDA40X30SN Compact Cylinder | 40mm Bore 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.
The AirTAC SDA40X30SN 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 significantly reduces axial mounting depth, making it highly effective for machinery where a standard round-body unit would occupy too much space. The 16 mm piston rod utilizes a female M8x1.25 thread, while the body features a PT1/8 port.
This unit includes a built-in piston magnet (-S) for direct mounting of AirTAC reed or electronic switches along the exterior sensor grooves. Deceleration at stroke ends is handled by a fixed NBR bumper rather than an adjustable cushion, meaning operators should slow the approach speed or utilize external shock absorbers for high-energy loads.
| Model | AirTAC SDA40X30SN Compact Cylinder | 40mm Bore |
|---|---|
| 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).
| 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. |
| ×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).
Provides the 628.3 N extension force needed to drive the cutting spindle carriage on an automated PCB depaneling machine, fitting neatly within the tight axial footprint of the electronics assembly cell.
Actuates the side flap folding arms on a continuous motion carton erector, using the 30 mm stroke and fixed NBR bumpers to cycle rapidly at 30-500 mm/s without requiring external cushioning.
Ejects small stamped metal brackets from a progressive die set, where the built-in magnet triggers an electronic switch to confirm part clearance before the press cycles again.
When sizing this 40 mm bore, evaluate your force requirements carefully: 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 the SDA40X30SN, the safe working load is approximately 377 N (about 60% of the 0.5 MPa rating), translating to a vertical lift capacity of roughly 32 kg with a 2:1 safety margin. To finalize your order, confirm the 40 mm bore, 30 mm stroke, PT1/8 port, female rod thread, and the required magnetic switch. Note that this cylinder will drift and cannot hold a load if air pressure is lost, as the fixed bumper only decelerates the stroke end rather than locking it; utilize an external rod lock for position holding.
Quick checklist
This double-acting 40 mm bore cylinder generates 628.3 N push and 527.8 N pull at 0.5 MPa, increasing to 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum push force is 128 kgf at 1.0 MPa. It operates between 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and functions in temperatures from -20 to +70 C.
It relies on a fixed NBR bumper at each end to decelerate the piston, which is not an adjustable air cushion; for high-speed operations, you should add an external shock absorber. The included -S magnet allows you to mount AirTAC reed or electronic switches directly into the body grooves for position confirmation.
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