The AirTAC AirTAC SDA40X50S Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 50mm 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 SDA40X50S 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 assembly securely joins the barrel, rear cover, piston, and rod, yielding an exceptionally short axial footprint that drops neatly into machinery where standard round bodies prove too long. The hard-anodized bore minimizes friction, while the integrated -S piston magnet enables position detection via an AirTAC reed or electronic switch seated in the body grooves.
This specific configuration features a 40 mm bore, a 50 mm stroke, and a PT1/8 port. End-stop energy is managed strictly by a fixed NBR bumper, which decelerates the piston near stroke limits but is not a field-adjustable air cushion. The 16 mm rod utilizes a female M8x1.25 thread end, and buyers should ensure the load is guided to avoid side-loading on this short body.
| Model | AirTAC SDA40X50S Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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. |
| ×50 | 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 machining operations, utilizing the 628.3 N extend force to hold components rigidly against the spindle torque.
Drives mechanical arms to tuck corrugated box flaps prior to tape sealing, where the 50 mm stroke and compact depth prevent interference with the conveyor guide rails.
Actuates sorting lanes to redirect heavy wooden pallets along a packaging line, relying on the fixed NBR bumper to absorb the impact at the end of the stroke.
When sizing this unit, 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, allowing you to tune thrust precisely to your application. Based on the 628.3 N push figure at 0.5 MPa, a safe working load is approximately 377 N (60 percent capacity), which equates to a vertical lift capability of roughly 32 kg with a 2:1 safety margin. To finalize your order, confirm the 40 mm bore, 50 mm stroke, PT1/8 port, female rod thread, and the required -S magnet for switch sensing. Remember that a plain cylinder drifts when air pressure is lost or the valve is centered; the fixed bumper only decelerates near the stroke end and will not lock the load. For suspended loads, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This 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. The theoretical maximum push force is 128 kgf at 1.0 MPa. It operates on filtered air between 0.15 and 1.0 MPa, with a speed range of 30-500 mm/s.
No adjustable air cushion is present; the unit relies solely on fixed NBR bumpers to decelerate the piston at the stroke extremes. Additionally, it cannot hold a load if air pressure drops, as the piston will drift. You must add an external shock absorber for high-energy stops and a pilot-operated check valve for position holding.
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