The AirTAC Airtac SC40 Standard Cylinder SC40X340 is a genuine double-acting standard air cylinder with a Ø40mm bore and 340mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X340 is a double-acting pneumatic cylinder delivering 628 N of push force at 0.5 MPa, rising to 1130 N at the maximum operating pressure of 0.9 MPa. With a 40 mm bore and a 340 mm stroke, this model is well-suited for medium-duty linear tasks where a compact tie-rod design is preferred over bulkier profile cylinders.
This unit features a 16 mm diameter piston rod with an M12x1.25 thread and a PT1/4 port. The body length A is 142 mm, giving a total extended length of approximately 482 mm. It includes an adjustable air cushion (21 mm length) to decelerate the piston smoothly at stroke ends, reducing impact and noise.
| Model | Airtac SC40 Standard Cylinder SC40X340 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 340 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. |
| ×340 | 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.
Provides controlled 340 mm linear motion to stop or divert packages on a conveyor line, with the adjustable cushion absorbing impact at the end of each cycle.
Delivers a consistent 628 N clamping force at standard shop air pressure, ideal for holding workpieces during light assembly or drilling operations.
Operates sorting gates or chute diverters in dusty farm environments, leveraging the tie-rod construction's durability and simple maintenance.
For applications needing more force, step up to the 50 mm bore SC50 series, which provides 982 N at 0.5 MPa. If a shorter, more compact cylinder is acceptable, the 32 mm bore SC32 series offers 402 N at the same pressure. This 340 mm stroke is within the 1200 mm maximum standard stroke for the 40 mm bore.
When replacing an existing cylinder, match five key points: the 40 mm bore, 340 mm stroke, PT1/4 port thread, basic mounting (no attached bracket), and the absence of a built-in magnet. For strokes over 300 mm, be mindful of side loads; the 16 mm rod can bend under lateral force. Use an external guide or ensure the load is purely axial to protect the rod bearing and seals.
Quick checklist
At 0.5 MPa, the push force is 628 N and the pull force is 528 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 1130 N. The theoretical maximum force at 1.0 MPa is 128 kgf.
No, the SC40X340 is a double-acting cylinder and will not hold its position if pressure is lost or the valve is centered. The piston can drift or drop. For load holding, you must add an external rod brake, a mechanical lock, or a pilot-operated check valve.
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