The AirTAC AirTAC SDA40X80SB Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 80mm 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 SDA40X80SB 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 body design integrates the barrel, rear cover, piston, and rod into a highly space-efficient package, drastically reducing axial mounting depth compared to conventional round-body units. The 16 mm piston rod features a male M14x1.5 thread for robust load coupling, while the hard-anodized bore ensures long service life.
This specific configuration includes an 80 mm stroke and a built-in piston magnet (-S) for position sensing via AirTAC reed or electronic switches mounted in the body grooves. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion. Operating at speeds between 30 and 500 mm/s with PT1/8 ports, it provides a safe working load of roughly 377 N or a vertical lift capacity of about 32 kg with a 2:1 safety margin.
| Model | AirTAC SDA40X80SB Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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. |
| ×80 | 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).
Actuates a routing flap on a logistics sorting line, utilizing the 80 mm stroke and 628.3 N push force to redirect parcels weighing up to 32 kg onto secondary chutes.
Drives a mechanical arm to fold corrugated box flaps prior to sealing, taking advantage of the short riveted body to fit within tight conveyor frame clearances.
Secures aluminum castings inside a machining center; the male M14x1.5 rod threads directly into the custom jaw fixture for reliable 527.8 N retention during milling.
When sizing this 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 SDA40X80SB configuration specified here includes the 40 mm bore, 80 mm stroke, PT1/8 porting, the -S magnet for sensing, and the -B male M14x1.5 piston rod end (the default is a female M8x1.25 thread).
Keep in mind that a standard compact cylinder cannot hold a load if air pressure drops or the valve is centered; the piston will drift, and the fixed NBR bumper only decelerates the stroke near its limits without acting as a mechanical lock. If your application requires static load holding on air loss, you must integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
Quick checklist
At 0.5 MPa, this 40 mm bore cylinder generates 628.3 N of push force and 527.8 N of pull force. At 0.7 MPa, push increases to 879.6 N. The theoretical maximum push force is 128 kgf at the 1.0 MPa operating pressure limit.
No, it uses a fixed NBR bumper at each end to decelerate the stroke, which is not field-adjustable; for high kinetic energy, add an external shock absorber. Additionally, the -B option specifies a male M14x1.5 threaded piston rod instead of the standard female M8x1.25 thread.
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