The AirTAC AirTAC SDA40X80B 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 SDA40X80B is a double-acting, single-rod compact cylinder engineered with a 40 mm bore and an 80 mm stroke. It generates a push force of 628.3 N and a pull force of 527.8 N at 0.5 MPa, making it well-suited for medium-duty automation tasks. This specific SKU includes the B option, meaning it features a male M14x1.5 threaded piston rod end for secure mechanical coupling to your load.
Designed with a short riveted body, this unit drastically reduces axial mounting depth compared to conventional round-body cylinders, saving valuable machine footprint. The bore inner wall is hard-anodized for longevity, while the piston relies on a fixed NBR bumper at each end to decelerate the stroke. Note that this configuration does not include a piston magnet, so it cannot directly host AirTAC reed or electronic switches.
| Model | AirTAC SDA40X80B 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 operations, utilizing the 628.3 N push force to maintain rigid workholding against cutting vibrations.
Pushes medium-weight cardboard cartons off a main sorting line onto a secondary packaging belt, taking advantage of the short riveted body to fit within tight conveyor framing.
Acts as a secondary ejector to free molded plastic parts from the tool cavity, using the male M14x1.5 rod thread to attach a custom knock-out plate.
When sizing this actuator, consider stepping down to the SDA32 bore if your application requires less force, as it provides a 402.1 N push at 0.5 MPa. Conversely, if your load demands more power, the SDA50 bore offers a 981.7 N push at 0.5 MPa. For this 40 mm bore, the safe working load is approximately 377 N (about 60% of the 0.5 MPa figure), which translates to a vertical lift capacity of roughly 32 kg with a 2:1 safety margin.
Keep in mind that a standard compact cylinder like this does not hold its position if air pressure is lost or the directional valve is centered; the piston will drift. If your application requires load holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve. To order, confirm your requirements for the 40 mm bore, 80 mm stroke, PT1/8 port, male M14x1.5 rod thread, and the absence of a sensor magnet.
Quick checklist
This double-acting cylinder provides a push force of 628.3 N and a pull force of 527.8 N at 0.5 MPa. At 0.7 MPa, the push force is 879.6 N. The theoretical maximum push force is 128 kgf at the maximum operating pressure of 1.0 MPa.
No, it uses a fixed NBR bumper at each end to decelerate the stroke end, which is not an adjustable air cushion. Additionally, this specific SKU lacks the -S option, so it has no piston magnet and cannot be used with magnetic switches.
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