The AirTAC AirTAC SDA25X50BH Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 50mm 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 SDA25X50BH 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 round-body alternatives, making it highly effective for machinery where space is strictly limited. This specific configuration includes a male M8x1.25 piston rod thread for direct load coupling and utilizes fluororubber (FKM) seals for enhanced thermal and oil resistance.
The unit features a 10 mm piston rod and M5x0.8 air ports. Instead of an adjustable air cushion, it relies on a fixed NBR bumper at each end to decelerate the stroke. This SKU omits the piston magnet, meaning it cannot support magnetic position sensing without switching to the -S variant. Operating speeds range from 30-500 mm/s across a 0.15-1.0 MPa pressure range.
| Model | AirTAC SDA25X50BH Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 50 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. |
| ×50 | 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 routing machine gates in electronics fabrication, where the compact depth saves axial space and the FKM seals withstand localized heat from nearby spindle motors.
Drives the sealing head on pharmaceutical blister lines, providing consistent 245.4 N clamping force while the male M8x1.25 rod threads directly into the tooling plate.
Pushes lightweight packages on logistics conveyors, operating at speeds up to 500 mm/s with the fixed NBR bumpers absorbing the end-of-stroke impact.
When sizing this 25 mm bore actuator, evaluate your force margins both ways: stepping down to the SDA20 yields 157.1 N of push at 0.5 MPa, while stepping up to the SDA32 provides 402.1 N. Based on the 245.4 N output at 0.5 MPa, a safe working load is approximately 147 N (around 60% capacity), translating to a vertical lift capability of roughly 12.5 kg with a 2:1 safety margin. Ensure you specify the 50 mm stroke, M5x0.8 port, male M8x1.25 rod, and FKM seal when ordering. Note that a standard compact cylinder drifts when air pressure is lost or the valve is centered; the fixed bumper only decelerates near the stroke end and does not function as a locking brake. If your application requires absolute load holding, incorporate an external rod lock or a pilot-operated check valve.
Quick checklist
This double-acting cylinder generates 245.4 N push and 206.2 N pull at 0.5 MPa. At 0.7 MPa, it outputs 343.6 N push and 288.6 N pull. The theoretical maximum push force is 50 kgf at the 1.0 MPa operating pressure limit.
No, this specific SKU lacks a piston magnet, so it cannot trigger AirTAC reed or electronic switches. You would need the SDA25X50BHS variant (with the -S option) to enable magnetic sensing. Additionally, it uses a fixed NBR bumper rather than an adjustable air cushion.
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