The AirTAC AirTAC SDA40X15H Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 15mm 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 SDA40X15H is a double-acting single-rod compact cylinder engineered for tight axial spaces. It generates 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. The short riveted body merges the barrel and covers to minimize mounting depth where standard round-body units cannot fit. This specific SKU utilizes fluororubber (FKM) seals for enhanced thermal and oil resistance.
This 40 mm bore model features a 16 mm piston rod and PT1/8 air ports. It relies on a fixed NBR bumper at each end to decelerate the stroke end rather than an adjustable air cushion. Because this configuration lacks the -S magnet option, it cannot support magnetic position sensing without modifying the order code.
| Model | AirTAC SDA40X15H Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 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. |
| ×15 | 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 workpieces in a CNC machining center using the 628.3 N extend force, while the 15 mm stroke keeps the fixture profile extremely shallow.
Actuates folding mechanisms on a packaging line where FKM seals withstand elevated ambient temperatures and lubricant exposure better than standard rubber.
Pushes product redirecting arms on a conveyor belt system, relying on the short riveted body to fit within the narrow 40 mm side-frame clearance.
When sizing this actuator, consider stepping down to the SDA32 which yields 402.1 N of push at 0.5 MPa, or moving up to the SDA50 which provides 981.7 N at the same pressure. For this 40 mm bore, a safe working load is approximately 377 N (about 60 percent of the 0.5 MPa push figure), translating to a vertical lift capacity of roughly 32 kg with a 2:1 safety margin. Confirm your ordering essentials: 40 mm bore, 15 mm stroke, PT1/8 port, female rod thread (M8x1.25), and FKM seals.
Note that a plain compact cylinder does not hold its load if air pressure is lost or the valve is centered. The piston will drift, and the fixed bumper only decelerates the motion near the stroke end without acting as a lock. If your application requires position holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This 40 mm bore double-acting cylinder provides a push force of 628.3 N and a pull force of 527.8 N at 0.5 MPa. At 0.7 MPa, the push force is 879.6 N. The theoretical maximum push force is 128 kgf at 1.0 MPa. It operates between 0.15 and 1.0 MPa, with a speed range of 30-500 mm/s.
No, this specific SKU does not include the -S piston magnet, so it cannot trigger AirTAC reed or electronic switches. You would need to order the -S variant to enable sensing. Additionally, it uses a fixed NBR bumper to decelerate at stroke end, which is not an adjustable air cushion.
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