The AirTAC AirTAC SDA40X15SB 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 SDA40X15SB 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, making it a robust choice for mid-range actuation. The riveted body design drastically reduces overall mounting depth compared to conventional round-body units, saving valuable machine footprint.
This specific configuration includes a built-in piston magnet (-S) for position sensing via AirTAC reed or electronic switches, and a male M14x1.5 threaded rod end (-B) for secure load coupling. The 16 mm piston rod operates within a hard-anodized bore, while fixed NBR bumpers absorb end-stop impact. Operating speed ranges from 30-500 mm/s.
| Model | AirTAC SDA40X15SB 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 engine blocks during CNC machining. The 628.3 N extend force at 0.5 MPa provides rigid holding against cutting forces, while the 15 mm short stroke fits neatly within tight fixture geometry.
Actuates folding mechanisms on high-speed packaging lines to tuck cardboard flaps prior to sealing. The male M14x1.5 rod end allows direct mounting of custom folding arms.
Pushes singulated printed circuit boards out of a routing station. The built-in magnet works with an electronic switch to confirm ejection before the conveyor advances.
When sizing this 40 mm bore actuator, evaluate your force margins carefully. Stepping down to the SDA32 yields 402.1 N of push at 0.5 MPa, whereas stepping up to the SDA50 provides 981.7 N. The SDA40X15SB provides a safe working load of roughly 377 N (about 60% of its 628.3 N capacity) and can vertically lift approximately 32 kg with a 2:1 safety margin. Confirm your ordering essentials: 40 mm bore, 15 mm stroke, PT1/8 port, male M14x1.5 rod thread, and the integrated magnet.
Note that a standard compact cylinder does not hold its position if air pressure drops or the valve is centered; the piston will drift. The fixed NBR bumper only decelerates the stroke near the end limits and acts neither as a lock nor a brake. If your application requires static load holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This double-acting 40 mm bore cylinder delivers 628.3 N push and 527.8 N pull at 0.5 MPa, and 879.6 N push at 0.7 MPa. The theoretical maximum push force is 128 kgf at 1.0 MPa. It operates on filtered air between 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and supports speeds of 30-500 mm/s.
No, it uses fixed NBR bumpers at both ends to decelerate the stroke, which are not field-adjustable; for high-energy impacts, slow the approach or add an external shock absorber. Additionally, the -B option specifies a male M14x1.5 piston rod thread instead of the default female M8x1.25.
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