The AirTAC AirTAC SDA40X75SB Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 75mm 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 SDA40X75SB 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 assembly significantly reduces axial mounting depth compared to conventional round-body units, making it highly effective for machinery where space savings are critical. The unit includes a male M14x1.5 piston rod thread and a PT1/8 air port.
This specific configuration ships with a built-in piston magnet (-S) for direct mounting of AirTAC reed or electronic switches along the body grooves, plus a male-threaded rod end (-B) for secure mechanical load coupling. The bore is hard-anodized, and end-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion.
| Model | AirTAC SDA40X75SB Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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. |
| ×75 | 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).
Pushes medium-weight cartons off a sorting line using the 628.3 N extend force, fitting neatly into tight transfer station footprints.
Secures aluminum housings during machining via the male M14x1.5 rod end, providing rigid holding without excessive bulk.
Acts as a short-stroke elevation stop for palletized goods, relying on the 527.8 N retract force to reset quickly between cycles.
Selecting this 40 mm bore provides a safe working load of roughly 377 N (about 60% of the 628.3 N push at 0.5 MPa), translating to a vertical lift capacity of approximately 32 kg with a 2:1 safety margin. If your application requires less force, stepping down to the SDA32 yields 402.1 N at 0.5 MPa, while heavier loads can step up to the SDA50 which provides 981.7 N. Keep in mind that a standard compact cylinder drifts when air pressure is lost or the valve is centered; the fixed bumper only decelerates the stroke end and does not function as a locking brake. For position holding without live pressure, an external rod lock or pilot-operated check valve is required. Your ordering essentials are: 40 mm bore, 75 mm stroke, PT1/8 port, built-in magnet (S), and male M14x1.5 rod thread (B).
Quick checklist
At 0.5 MPa, this 40 mm bore double-acting cylinder provides 628.3 N of push force and 527.8 N of pull force. At 0.7 MPa, push increases to 879.6 N and pull to 738.9 N. The theoretical maximum push is 128 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa, with a speed range of 30-500 mm/s.
It uses a fixed NBR bumper at each end to decelerate the piston near the stroke limits; this is not an adjustable air cushion. Additionally, the bumper is not a brake—a plain cylinder will drift if air is lost or the valve is centered. To hold a load securely without live pressure, you must install an external rod lock or a pilot-operated check valve.
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