The AirTAC AirTAC SDA40X25B Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 25mm 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 SDA40X25B 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 short riveted body significantly reduces axial mounting depth compared to round-body units, saving valuable machine footprint in tight assemblies. This specific SKU features a male M14x1.5 threaded piston rod end for secure mechanical load coupling.
Designed with a hard-anodized 40 mm bore and a two-way piston seal, it operates at speeds from 30 to 500 mm/s. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion. Note that this configuration omits the piston magnet, so position sensing is not supported without the -S variant.
| Model | AirTAC SDA40X25B Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 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. |
| ×25 | 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 billets onto machining centers using the 628.3 N extend force, while the male M14x1.5 rod threads directly into custom jaw clamps.
Drives mechanical folding arms on automated packaging lines where the compact riveted body minimizes protrusion into tight conveyor lanes.
Pushes molded plastic components out of press dies at up to 500 mm/s, relying on the fixed NBR bumper to absorb the end-stop impact.
When sizing this actuator, stepping down to an SDA32 yields 402.1 N of push at 0.5 MPa, while stepping up to an SDA50 provides 981.7 N. For this 40 mm bore, the safe working load is approximately 377 N (about 60% of the 0.5 MPa rating), translating to a vertical lift capacity of roughly 32 kg with a 2:1 safety margin. Be aware that a plain SDA cylinder will drift and cannot hold a load if air pressure drops or the valve is centered; maintaining vertical loads requires an external rod lock or pilot-operated check valve. To order, confirm the 40 mm bore, 25 mm stroke, PT1/8 port, male M14x1.5 rod thread, and no magnet.
Quick checklist
This 40 mm bore double-acting cylinder generates 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical maximum push of 128 kgf at 1.0 MPa. The air port size is PT1/8.
No, this specific SKU lacks the internal piston magnet, so it cannot trigger AirTAC reed or electronic switches. You must select the -S option code to enable sensor groove functionality. Additionally, end stops rely on a fixed NBR bumper, not an adjustable cushion.
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