The AirTAC Airtac SC Standard Cylinders SC63X940S is a genuine double-acting standard air cylinder with a Ø63mm bore and 940mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC63X940S is a double-acting tie-rod cylinder with a 63 mm bore and an unusually long 940 mm stroke, well inside the 1500 mm maximum standard stroke for this bore. At 0.5 MPa it pushes with about 1559 N and pulls with 1402 N, rising to 2805 N at the 0.9 MPa maximum operating pressure. The 20 mm rod, 28 mm adjustable cushion and 153 mm body length A give an extended length of roughly 1093 mm, so check your envelope before ordering.
The -S suffix means a magnet is built into the piston, so CMSG, DMSG or EMSG switch magnets clamp directly onto the barrel for end-of-stroke or mid-stroke position feedback - very useful on a long-travel axis like this. Ports are PT1/4 and the rod thread is M16x1.5. This is a genuine AirTAC SC-series cylinder, not an ISO 15552 profile body, and it is shorter than an ISO 15552 cylinder of the same bore.
| Model | Airtac SC Standard Cylinders SC63X940S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke | 940 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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, 28 mm |
| Max stroke | Up to 1500 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 | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (approx.) | 318 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. |
|---|---|
| 63 | Bore size in mm. |
| ×940 | 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.
With 940 mm of travel and 1559 N of push at 0.5 MPa, this cylinder lifts gates, hoppers or stopper assemblies over nearly a metre. Remember the SC does not hold position on air loss - fit a mechanical lock or pilot-operated check valve where load holding matters.
The long stroke sweeps product across wide conveyor beds, while the built-in magnet feeds CMSG or DMSG switch signals to the PLC for extend and retract confirmation without external limit switches.
On special machines needing long reach in a tie-rod format, the 63 mm bore gives 2805 N at 0.9 MPa - enough for heavy clamping or slide driving - with the 28 mm cushion protecting the mechanism at stroke end.
At 1559 N push at 0.5 MPa, the 63 mm bore sits between the 50 mm bore (982 N) and the 80 mm bore (2513 N). Step up to 80 if your load or breakaway friction approaches 1200 N at working pressure; step down to 50 if you need under 800 N and want a smaller envelope. With 940 mm of unsupported rod, side load is the main risk: the slender 20 mm rod will bend under off-axis forces, so carry the load on an external guide rail or specify a guided cylinder arrangement, and use the 28 mm adjustable cushion to soften end-of-stroke deceleration. For a like-for-like replacement, match all five points: 63 mm bore, 940 mm stroke, PT1/4 port thread, mounting accessory (this code is basic, no bracket) and the -S magnet for sensor use.
Quick checklist
At 0.5 MPa the piston pushes with 1559 N and pulls with 1402 N. At the full 0.9 MPa maximum operating pressure, push force reaches 2805 N. Theoretical maximum force at 1.0 MPa is about 318 kgf. Deduct 10-15% for real-world losses when sizing your load.
Yes - at 940 mm the 20 mm rod is long and slender, so any side load will bend it and wear the rod bearing. Mount the cylinder so the load travels on an external guide or choose a guided cylinder arrangement, and set the adjustable cushion to decelerate the piston near stroke end. For a direct replacement, match the 63 mm bore, 940 mm stroke, PT1/4 port thread, mounting accessory and the -S magnet so your sensors still work.
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