The AirTAC AirTAC SDA25X5BH Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 5mm 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 SDA25X5BH is a double-acting, single-rod compact cylinder engineered for extremely tight axial spaces. It delivers a push force of 245.4 N and a pull force of 206.2 N at 0.5 MPa. Built with a short riveted body, it saves valuable mounting depth compared to round-body alternatives. This specific SKU includes an FKM fluororubber seal for enhanced thermal and oil resistance.
This model features a 10 mm piston rod with a male M8x1.25 thread for secure load coupling. It operates at speeds between 30-500 mm/s using an M5x0.8 port. End-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable cushion. Note that this configuration lacks a piston magnet, so it cannot support position sensing without switching to the -S variant.
| Model | AirTAC SDA25X5BH Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 5 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. |
| ×5 | 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).
Provides precise 5 mm lateral nudging on a conveyor to align printed circuit boards before optical inspection, utilizing the 245.4 N force without overwhelming the delicate panel.
Drives a short-stroke sealing jaw in a vertical form-fill-seal machine, where the FKM seals withstand heat exposure and the compact body fits within the narrow sealing head.
Pushes molded plastic parts out of an injection press cavity, using the male M8x1.25 rod thread to securely attach a custom ejector fork.
When sizing this actuator, consider stepping down to the SDA20, which provides 157.1 N of push force at 0.5 MPa, or stepping up to the SDA32, which yields 402.1 N. The SDA25X5BH provides a calculated safe working load of roughly 147 N (about 60% of its 245.4 N capacity) and can vertically lift approximately 12.5 kg with a 2:1 safety margin. Ensure you specify the 25 mm bore, 5 mm stroke, M5x0.8 port, male M8x1.25 rod thread, and FKM seals when ordering.
Because this is a standard double-acting cylinder, it will not hold a load if air pressure drops or the valve is centered—the piston will drift. The fixed NBR bumper only decelerates the stroke near the end points; it does not function as a locking brake. If your application requires absolute position holding, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This 25 mm bore 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. Operating pressure ranges from 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and it operates at speeds of 30-500 mm/s.
No, this specific SKU does not include a piston magnet, so it cannot trigger AirTAC reed or electronic switches. To add sensing capabilities, you would need to order the -S variant. Additionally, this version uses a fixed NBR bumper for end-stop deceleration rather than an adjustable air cushion.
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