The AirTAC Airtac SC40 Standard Cylinder SC40X25TC is a genuine double-acting standard air cylinder with a Ø40mm bore and 25mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X25TC is a double-acting tie-rod cylinder with a 40 mm bore and a short 25 mm stroke, delivering a push force of 628 N at 0.5 MPa (1130 N at 0.9 MPa). This model is equipped with a 16 mm diameter piston rod and an M12x1.25 rod thread, providing robust linear actuation for compact machine sections.
This specific unit includes a factory-fitted centre trunnion mount (TC), supplied with the TCM1 bracket (order code F-SC40TC). The trunnion allows the cylinder body to pivot, making it ideal for applications where the load follows an arc. The adjustable air cushion at each end decelerates the piston smoothly across the 21 mm cushion length, reducing end-of-stroke shock in high-cycle tasks.
| Model | Airtac SC40 Standard Cylinder SC40X25TC |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SC series datasheet. Operating pressure 0.15–1.0 MPa, proof pressure 1.5 MPa, temperature −20 to +70 °C. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (approx.) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SC | Standard tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related variants: SCD (double rod), SCJ (adjustable stroke), SCT (multi-position). Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
The short 25 mm stroke and pivoting trunnion mount allow this cylinder to quickly flip a small diverter gate on a conveyor line, sorting lightweight packages with the 628 N push force.
Delivers a firm, controlled clamp on thin workpieces. The adjustable cushion prevents impact marks, and the compact body length of 142 mm plus stroke fits neatly into tight jig spaces.
The TC centre trunnion mount is perfect for driving a pivoting linkage or lever mechanism, allowing the cylinder body to swing as the 16 mm rod extends and retracts through its 25 mm travel.
For applications requiring a compact pivot mount, this TC configuration is the correct choice. If your force needs are slightly lower, the 32 mm bore SC32 series provides 402 N of push force at 0.5 MPa; for higher demands, the 50 mm bore steps up to 982 N. Always ensure the rod is aligned with the load path to prevent side loading.
When replacing an existing cylinder, match five key points: the 40 mm bore, the 25 mm stroke, the PT1/4 port thread, the centre trunnion mounting style, and the absence of a magnet on this model. The SC series is a tie-rod design and is not dimensionally interchangeable with ISO 15552 profile cylinders.
Quick checklist
At 0.7 MPa operating pressure, the 40 mm bore SC cylinder generates a theoretical push force of 879 N. The pull force on the retract stroke is 528 N at 0.5 MPa, due to the area reduction from the 16 mm piston rod.
It can function in the same application only if the machine is redesigned to accept a pivoting cylinder body. The TC centre trunnion mount allows the cylinder to swing, unlike a fixed foot mount. The port thread (PT1/4) and stroke remain identical, but the mounting interface is fundamentally different.
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