The AirTAC AirTAC SDA40X80BH 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 SDA40X80BH 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, saving valuable axial mounting depth in tight machinery footprints. The bore is hard-anodized for longevity, and this specific SKU is configured with a male M14x1.5 piston rod thread for secure mechanical coupling to your load.
This model includes an H-designated fluororubber (FKM) seal variant, offering enhanced resistance to higher temperatures and oily environments compared to standard NBR. End-of-stroke deceleration is handled by a fixed NBR bumper at each end, which absorbs impact energy but is not a field-adjustable air cushion. Because this configuration lacks the S magnet option, it cannot support magnetic position sensing; achieving that requires the -S variant equipped for reed or electronic switches.
| Model | AirTAC SDA40X80BH 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).
Secures aluminum engine blocks during CNC machining using the 628.3 N extend force, while the male M14x1.5 rod threads directly into custom tooling clamps.
Applies consistent downward pressure on corrugated carton flaps in high-temperature packaging lines, leveraging the FKM seals to resist thermal degradation.
Actuates a routing gate on a logistics conveyor, utilizing the 80 mm stroke and fixed NBR bumpers to absorb the kinetic energy of rapid 30-500 mm/s cycling.
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, while stepping up to the SDA50 provides 981.7 N. For the SDA40X80BH, the safe working load is approximately 377 N (about 60% of the 0.5 MPa figure), translating to a vertical lift capacity of roughly 32 kg with a 2:1 safety margin. Keep in mind that a plain compact cylinder does not hold its load if air pressure drops or the valve is centered—the piston will drift, and the fixed bumper only decelerates near the stroke end. For suspended or vertical loads, an external rod lock or pilot-operated check valve is required. Confirm your ordering essentials: 40 mm bore, 80 mm stroke, PT1/8 port, male M14x1.5 rod thread, and FKM seals.
Quick checklist
At 0.5 MPa, the push force is 628.3 N and the pull force is 527.8 N. At 0.7 MPa, push is 879.6 N and pull is 738.9 N. The theoretical maximum push is 128 kgf at 1.0 MPa. Operating pressure ranges from 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and the speed range is 30-500 mm/s.
No, this specific SKU lacks the S option, meaning it has no piston magnet and cannot trigger AirTAC reed or electronic switches. You would need the SDA40X80BHS variant for position sensing. Additionally, end-stop deceleration relies on a fixed NBR bumper, not an adjustable air cushion.
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