The AirTAC AirTAC SDA25X35B Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 35mm 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 SDA25X35B 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 assembly significantly reduces axial mounting depth compared to conventional round-body units, making it highly effective for tight machinery footprints. The hard-anodized bore and two-way piston seal ensure durable, low-friction operation across a 30-500 mm/s speed range.
This specific SKU features a male M8x1.25 piston rod thread for secure mechanical coupling to your load. End-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning high-energy cycles may require external shock absorption. Note that this configuration omits the piston magnet, so it cannot directly host AirTAC reed or electronic switches.
| Model | AirTAC SDA25X35B Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 35 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. |
| ×35 | 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 the tool-swapping arm in a CNC routing cell, using the 35 mm stroke to seat a cutting bit against the spindle taper with 245.4 N of extend force.
Folds the minor side flaps of corrugated shipping boxes on a continuous flow wrapper, capitalizing on the short body to fit between narrow conveyor guide rails.
Pushes a metal sheet against a hard stop to align it prior to a press stroke, relying on the fixed NBR bumper to absorb the impact at the end of the 35 mm travel.
When sizing this 25 mm bore actuator, evaluate your force margins carefully. Stepping down to the SDA20 reduces the 0.5 MPa push output to 157.1 N, while moving up to the SDA32 increases it to 402.1 N. Based on the 245.4 N output at 0.5 MPa, a safe working load is approximately 147 N (about 60 percent capacity), translating to a vertical lift capability of roughly 12.5 kg with a 2:1 safety margin.
Confirm your ordering essentials: 25 mm bore, 35 mm stroke, and an M5x0.8 air port. This model includes the B option for a male M8x1.25 rod thread and lacks the S magnet option. Because a standard double-acting cylinder drifts when air pressure is lost or the valve is centered, an external rod lock or pilot-operated check valve is necessary if the application must hold a load securely without live pressure.
Quick checklist
At 0.5 MPa, this double-acting cylinder provides 245.4 N of push force and 206.2 N of pull force. At 0.7 MPa, push increases to 343.6 N and pull to 288.6 N. The theoretical maximum push is 50 kgf at 1.0 MPa. It operates between 0.15 and 1.0 MPa, with a proof pressure of 1.5 MPa, and functions in temperatures from -20 to +70 C.
This specific SKU does not include a piston magnet, so it cannot support AirTAC reed or electronic switches; you would need the SDA25X35BS variant for sensing. Regarding impact, it uses a fixed NBR bumper at each end to decelerate the piston. This is not an adjustable air cushion, so for high-speed or high-energy cycles, you should slow the approach or add an external shock absorber.
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