The AirTAC Airtac SC40 Standard Cylinder SC40X680 is a genuine double-acting standard air cylinder with a Ø40mm bore and 680mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X680 is a double-acting pneumatic cylinder with a 40 mm bore and a 680 mm non-standard stroke, built for applications needing extended linear travel in a compact tie-rod body. It delivers a push force of 628 N at 0.5 MPa and 1130 N at 0.9 MPa, driven by a 16 mm diameter piston rod with an M12x1.25 thread.
This model features a 142 mm body length (A) and a 21 mm adjustable air cushion at each end to decelerate the piston smoothly. With a PT1/4 port and TPU seals, it operates reliably from -20 to +70 °C. The 680 mm stroke exceeds the standard 1200 mm maximum for bore 40, making this a made-to-order unit for specific long-reach tasks.
| Model | Airtac SC40 Standard Cylinder SC40X680 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 680 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. |
| ×680 | 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 680 mm stroke moves parts between distant conveyor stations or indexing tables, providing consistent 628 N push force for reliable transfer in packaging lines.
Ideal for clamping tall or deep workpieces in woodworking and metal fabrication jigs, where the long stroke allows the tooling plate to retract fully for easy part loading.
Operates roof or side vents in agricultural buildings, using its non-standard 680 mm travel to open large louvered panels with controlled pneumatic force.
Choose the SC40X680 when you need a 40 mm bore cylinder with a stroke beyond the standard range. If your force requirement is lower, the SC32 series provides 402 N at 0.5 MPa; for higher force, the SC50 steps up to 982 N. Always match bore, stroke, PT1/4 port thread, and mounting accessories when replacing an existing cylinder.
For strokes of this length, the 16 mm rod is susceptible to bending under side loads. Avoid direct lateral forces by pairing the cylinder with an external linear guide or a guided cylinder assembly. If the rod is unsupported, limit the load to pure axial push-pull motion to prevent premature bearing wear and seal failure.
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 maximum standard stroke for a 40 mm bore SC cylinder is 1200 mm. The 680 mm stroke is non-standard and is produced as a made-to-order item. It is not a drop-in replacement for ISO 15552 cylinders, so match it only with another AirTAC SC tie-rod cylinder of the same bore, stroke, and port thread.
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