The AirTAC AirTAC SDA25X120SB Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 120mm 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 SDA25X120SB is a double-acting, single-rod compact cylinder engineered to deliver a 245.4 N push force at 0.5 MPa. Its riveted assembly significantly reduces axial mounting depth compared to round-body units, making it highly effective for tight machine footprints. This specific configuration includes a built-in piston magnet for position sensing and a male M8x1.25 threaded rod end for direct load coupling.
Deceleration at stroke ends is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning external shock absorbers should be added for high-energy cycles. The body features integrated magnetic-switch grooves that accept AirTAC reed or electronic switches to track piston travel. Operating at speeds between 30 and 500 mm/s, this unit utilizes an M5x0.8 port and a 10 mm piston rod to support its 120 mm stroke.
| Model | AirTAC SDA25X120SB Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 120 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. |
| ×120 | 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).
Actuates the cutting head assembly on an electronic PCB depaneling machine, utilizing the 120 mm stroke and male M8x1.25 rod end to maintain precise Z-axis routing depth across the panel.
Drives the mechanical flap-folding arms on a continuous packaging line, where the short riveted body conserves axial space and the 245.4 N push force easily overcomes cardboard resistance.
Pivots a diverter arm on a logistics conveyor to route parcels, relying on the built-in magnet and reed or electronic switches to confirm gate position before the belt advances.
When sizing this 25 mm bore model, stepping down to the SDA20 reduces the 0.5 MPa push force to 157.1 N, while stepping up to the SDA32 increases it to 402.1 N. For the SDA25X120SB, the computed safe working load is approximately 147 N (about 60% of the 245.4 N push figure), translating to a vertical lift capacity of roughly 12.5 kg with a 2:1 safety margin. Ensure your ordering essentials match this exact configuration: 25 mm bore, 120 mm stroke, M5x0.8 port, -S magnet, and -B male-thread rod end.
Keep in mind that a standard compact cylinder does not hold its position or load when air pressure is lost or the directional valve is centered; the piston will drift, and the fixed bumper only decelerates it near the stroke end. If your application must maintain a load without live pressure, an external rod lock or a pilot-operated check valve is required.
Quick checklist
This double-acting cylinder provides 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 force is 343.6 N and the pull is 288.6 N. The theoretical maximum push is 50 kgf at 1.0 MPa. It operates within a pressure range of 0.15-1.0 MPa, a proof pressure of 1.5 MPa, and a temperature range of -20 to +70 C.
No, it uses a fixed NBR bumper at each end to decelerate the piston, which is not a field-adjustable air cushion; you should slow the approach or add external shock absorbers for high-speed cycles. Additionally, because this is the -B variant, it has a male M8x1.25 threaded piston rod instead of the default female M5x0.8 rod end.
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