The AirTAC AirTAC SDA40X140 Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 140mm 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 SDA40X140 is a double-acting, single-rod compact cylinder engineered for tight axial footprints. It generates 628.3 N of push force and 527.8 N of pull force at 0.5 MPa, operating within a 0.15-1.0 MPa pressure range. The riveted unibody design integrates the barrel and covers to minimize mounting depth compared to conventional round-body units.
This specific 140 mm stroke exceeds the 130 mm standard maximum for the 40 mm bore, making it a non-standard, made-to-order configuration. It features a 16 mm piston rod, PT1/8 air ports, and a female M8x1.25 rod-end thread. End-stopping relies on a fixed NBR bumper rather than an adjustable cushion, and because this SKU lacks the -S magnet option, it cannot host reed or electronic switches.
| Model | AirTAC SDA40X140 Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 140 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. |
| ×140 | 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).
Drives a routing flap on a high-speed logistics conveyor to push parcels into secondary chutes.
Provides the extended 140 mm reach to eject formed plastic parts from deep mold cavities.
Actuates a mechanical arm to fold and hold corrugated carton flaps prior to case sealing.
When sizing this actuator, evaluate your force margins 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 SDA40X140, the safe working load is approximately 377 N (60% of the 0.5 MPa push force), translating to a vertical lift capacity of about 32 kg with a 2:1 safety margin. Confirm your ordering essentials: 40 mm bore, 140 mm non-standard stroke, PT1/8 port, female rod thread, and no sensor magnet.
Because this is a double-acting air cylinder, it will not hold a load if air pressure drops or the directional valve is centered—the piston will drift. The fixed NBR bumper only decelerates the stroke near its end points and does not function as a mechanical lock. If your application requires position holding on loss of pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
At 0.5 MPa, this 40 mm bore cylinder outputs 628.3 N of push and 527.8 N of pull. At 0.7 MPa, push increases to 879.6 N and pull to 738.9 N. The theoretical maximum push is 128 kgf at 1.0 MPa. Operating pressure spans 0.15-1.0 MPa with a proof pressure of 1.5 MPa, and speed ranges from 30-500 mm/s.
No, this specific SKU does not include the -S piston magnet, so it cannot trigger reed or electronic switches. Additionally, because the 140 mm stroke exceeds the 130 mm standard maximum, it is a made-to-order item. End-stopping is handled by a fixed NBR bumper, which is not field-adjustable.
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