The AirTAC AirTAC SDA25X55H Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 55mm 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 SDA25X55H is a double-acting single-rod compact cylinder engineered for tight axial spaces. It delivers a push force of 245.4 N and a pull force of 206.2 N at 0.5 MPa. The riveted unibody design integrates the barrel, rear cover, and piston to minimize mounting depth where traditional round bodies cannot fit. This specific H variant utilizes fluororubber (FKM) seals for enhanced thermal and oil resistance.
This model features a 10 mm piston rod and M5x0.8 air ports. End-stop deceleration is handled by a fixed NBR bumper at each end, which is not an adjustable air cushion. Because this SKU lacks the S option, it has no piston magnet and cannot support position sensing.
| Model | AirTAC SDA25X55H Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 55 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. |
| ×55 | 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).
Secures aluminum workpieces inside machining centers. The FKM seals resist oily coolant mist while the short body conserves valuable tooling envelope space.
Drives mechanical arms to tuck corrugated box flaps prior to sealing tape application. The 55 mm stroke provides the exact travel needed without excessive overhang.
Actuates routing paddles on a logistics sorting line to push parcels into chutes. The fixed NBR bumper absorbs the end impact reliably at mid-range speeds.
When sizing this unit, evaluate stepping down to the SDA20, which provides 157.1 N of push force at 0.5 MPa, or moving up to the SDA32, which yields 402.1 N at the same pressure. Based on the 245.4 N output, your safe working load is approximately 147 N (60% capacity), translating to a vertical lift capability of about 12.5 kg with a 2:1 safety margin. To order, confirm the 25 mm bore, 55 mm stroke, FKM seal, M5x0.8 port, and standard female rod thread. Note that a standard cylinder drifts when air pressure is lost; if your application requires load holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This 25 mm bore double-acting cylinder generates 245.4 N push and 206.2 N pull at 0.5 MPa. At 0.7 MPa, push increases to 343.6 N. The theoretical maximum push is 50 kgf at 1.0 MPa. Operating pressure spans 0.15-1.0 MPa, with 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. You would need the SDA25X55HS variant for position sensing. Additionally, end stopping relies on a fixed NBR bumper, not an adjustable cushion.
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