The AirTAC AirTAC SDA40X15SH 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 SDA40X15SH is a double-acting single-rod compact cylinder engineered for minimal axial footprint machinery. It delivers a robust 628.3 N push force and 527.8 N pull force at 0.5 MPa, driven through a 16 mm piston rod. The riveted body design integrates the barrel, rear cover, and piston to drastically reduce mounting depth compared to traditional round-body units. This specific configuration includes an H designation, utilizing fluororubber (FKM) seals for enhanced thermal and oil resistance.
This 40 mm bore model operates on a PT1/8 port and is equipped with a built-in piston magnet (S option) for non-contact position detection using an AirTAC reed or electronic switch. End-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable cushion, meaning external shock absorbers should be added for high-velocity cycling. Operating speed spans 30-500 mm/s across a 0.15-1.0 MPa pressure range.
| Model | AirTAC SDA40X15SH 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 CNC machining centers using the 628.3 N extend force, while the FKM seals withstand exposure to synthetic cutting fluids and elevated ambient heat.
Executes rapid 15 mm tuck strokes on packaging lines to fold corrugated box flaps prior to tape sealing, capitalizing on the riveted body's ultra-short axial depth.
Ejects thin stamped metal sheets from progressive dies, utilizing the 16 mm rod and fixed NBR bumpers to absorb the rapid 30-500 mm/s impact without rebound.
Selecting this 40 mm bore involves balancing your force requirements: stepping down to the SDA32 yields 402.1 N push at 0.5 MPa, while stepping up to the SDA50 provides 981.7 N. At 0.5 MPa, this cylinder offers a computed safe working load of roughly 377 N (about 60 percent of its rated push) and can vertically lift approximately 32 kg with a 2:1 safety margin. Ensure your ordering essentials cover the 15 mm stroke, PT1/8 port, female M8x1.25 rod thread, the required magnetic sensor option, and the FKM seal variant.
Keep in mind that a standard compact actuator will not hold a load if air pressure drops or the directional valve centers; the piston will drift, and the fixed bumper only decelerates near the stroke end without acting as a mechanical lock. If your application demands strict 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 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. Its theoretical maximum push force is 128 kgf at 1.0 MPa, with a proof pressure of 1.5 MPa.
No, the piston will drift if air is lost or the valve is centered. The fixed NBR bumper only decelerates the piston near the stroke endpoints and does not function as a locking brake. To maintain position, an external rod lock or pilot-operated check valve is required.
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