The AirTAC AirTAC SDA25X140B Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 140mm stroke, M5×0.8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA25X140B is a double-acting, single-rod compact cylinder engineered to deliver 245.4 N of push force and 206.2 N of pull force at 0.5 MPa. Its riveted body design drastically reduces axial mounting depth compared to conventional round-body units, making it highly effective for machinery with tight spatial footprints. Because this 140 mm stroke exceeds the 130 mm standard maximum for a 25 mm bore, it is produced as a made-to-order item.
This specific SKU is configured with a male M8x1.25 piston rod thread for straightforward load coupling and lacks a piston magnet, meaning it cannot support magnetic sensing. The unit relies on a fixed NBR bumper at each end to decelerate the stroke rather than an adjustable air cushion. Operating speeds span 30-500 mm/s, and buyers should note that a plain compact actuator like this will drift if air pressure is lost, requiring an external rod lock for strict position holding.
| Model | AirTAC SDA25X140B Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 140 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod end thread | M5×0.8 female / M8×1.25 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 | 245 N | 206 N |
| 0.7 MPa | 344 N | — |
| Max (@1.0 MPa) | 50 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. |
|---|---|
| 25 | Bore size in mm. |
| ×140 | 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).
Drives sorting pushers on logistics conveyor lines where the 245.4 N extend force easily shifts small to medium cartons, and the shortened body depth fits within narrow transfer lane clearances.
Executes 140 mm vertical strokes to fold corrugated box flaps on continuous packaging equipment, utilizing the male M8x1.25 rod end for secure mechanical linkage to the folding jaw.
Maintains yarn tension dynamics in textile machinery, operating at 30-500 mm/s where the fixed NBR bumpers absorb the repetitive end-of-stroke impacts without requiring field adjustment.
When sizing this actuator, compare its 245.4 N push at 0.5 MPa against adjacent bores: stepping down to the SDA20 yields 157.1 N, while stepping up to the SDA32 provides 402.1 N. For this 25 mm bore, the safe working load is approximately 147 N (about 60% of the 0.5 MPa figure), translating to a vertical lift capacity of roughly 12.5 kg with a 2:1 safety margin. Because this is a 140 mm stroke configured with a male M8x1.25 rod end, an M5x0.8 air port, and no sensor magnet, verify your mounting geometry to avoid side loading the 10 mm rod. If your mechanism must maintain vertical position during a loss of air pressure, you must integrate a pilot-operated check valve or external locking device, as the internal NBR bumper only softens the end of stroke and acts purely as a deceleration buffer.
Quick checklist
This 25 mm bore double-acting cylinder generates a push force of 245.4 N and a pull force of 206.2 N at 0.5 MPa. At 0.7 MPa, the push increases to 343.6 N. The theoretical maximum push is 50 kgf at 1.0 MPa. It operates within a pressure range of 0.15-1.0 MPa, handles temperatures from -20 to +70 C, and has a speed range of 30-500 mm/s.
No, this specific SKU does not include a piston magnet, so it cannot accept AirTAC reed or electronic switches; you would need the -S variant for sensing. Regarding impact handling, it uses a fixed NBR bumper at each end to decelerate the piston near the stroke limits. This is not an adjustable air cushion, so for high-energy or high-speed cycles, you should slow the approach speed or add an external shock absorber.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.