The AirTAC AirTAC SDA25X40B Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 40mm 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 SDA25X40B is a double-acting single-rod compact cylinder engineered with a short riveted body to minimize axial mounting depth in tight machinery footprints. It delivers a push force of 245.4 N and a pull force of 206.2 N at 0.5 MPa, operating smoothly across a 30-500 mm/s speed range.
This specific SKU features a male M8x1.25 piston rod thread for direct load coupling and utilizes an M5x0.8 air port. End-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning external shock absorbers should be added for high-energy cycles. Because this unit lacks the -S magnet option, it cannot support magnetic position sensing.
| Model | AirTAC SDA25X40B Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 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. |
| ×40 | 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 the 245.4 N push stroke to clamp printed circuit boards securely within a routing fixture, where the short 40 mm stroke and compact body depth conserve valuable equipment floor space.
Actuates folding mechanisms on packaging lines to tuck corrugated box flaps, utilizing the male M8x1.25 rod thread for secure mechanical linkage and the fixed NBR bumper to absorb the 40 mm end stop.
Pushes PET bottles into distinct conveyor lanes using a calculated 147 N safe working load, ensuring rapid 30-500 mm/s cycling without requiring a profile cylinder footprint.
When sizing this actuator, evaluate your neighbors: stepping down to the SDA20 yields 157.1 N push at 0.5 MPa, while stepping up to the SDA32 provides 402.1 N. For the SDA25X40B, the computed safe working load is roughly 147 N (about 60% of the 245.4 N figure), translating to a vertical lift capacity of approximately 12.5 kg with a 2:1 safety margin. Remember that a standard compact cylinder drifts when air pressure is lost or the valve is centered, as the fixed bumper only decelerates the stroke end rather than locking the load; utilize an external rod lock or pilot-operated check valve if position holding is mandatory. Confirm your ordering essentials: 25 mm bore, 40 mm stroke, M5x0.8 port, male M8x1.25 rod thread, and no sensor magnet.
Quick checklist
This 25 mm bore 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. The theoretical maximum push force is 50 kgf at 1.0 MPa. It operates within a pressure range of 0.15-1.0 MPa and a speed range of 30-500 mm/s.
No, this specific SKU does not include the -S option, meaning it lacks a piston magnet and cannot trigger AirTAC reed or electronic switches. Additionally, it relies on a fixed NBR bumper to decelerate at the stroke ends rather than an adjustable air cushion, so you should slow the approach or add external shock absorbers for high-speed loads.
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