The AirTAC AirTAC SDA40X120B Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 120mm 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 SDA40X120B 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 body assembly significantly reduces axial mounting depth compared to round-body alternatives, making it highly effective for machinery where space footprint is critical. The unit features a hard-anodized aluminum bore and operates at speeds between 30 and 500 mm/s.
This specific configuration includes a 120 mm stroke and a male M14x1.5 piston rod thread for robust mechanical coupling to your load. End-stop deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning operators should slow the approach or utilize external shock absorbers for high-energy cycles. Because this SKU lacks the -S magnet option, it cannot host AirTAC reed or electronic switches.
| Model | AirTAC SDA40X120B Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 120 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. |
| ×120 | 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).
Deploys a 120 mm stroke to push corrugated cartons from a main sorting belt onto a secondary packaging line using 628.3 N of extend force.
Transfers cutting tools into a lathe spindle chuck, utilizing the male M14x1.5 rod thread to securely mount a custom gripper fixture.
Acts as a height stop for wooden pallets entering a stretch wrapper, saving axial machine depth while handling the 527.8 N retract load.
When sizing this actuator, consider stepping down to the SDA32 bore if your application requires only 402.1 N of push force at 0.5 MPa, or stepping up to the SDA50 bore if you need a substantially higher 981.7 N output. At 0.5 MPa, the 40 mm bore yields a safe working load of approximately 377 N (60% of capacity) and can vertically lift about 32 kg with a 2:1 safety margin. Be aware that a standard compact cylinder drifts when air pressure is lost or the valve is centered; the fixed bumper decelerates the stroke end but does not function as a locking brake, so integrate an external rod lock or pilot-operated check valve if the load must be held. To order, confirm the 40 mm bore, 120 mm stroke, PT1/8 port, male M14x1.5 rod thread, and no magnet.
Quick checklist
This 40 mm bore double-acting cylinder provides 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, with an operating pressure range of 0.15-1.0 MPa.
It relies on a fixed NBR bumper at each end to decelerate the piston, which is not an adjustable air cushion. For high-speed cycles, add an external shock absorber. Additionally, it will drift if air is lost; use an external rod lock or pilot-operated check valve to hold a load safely.
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