The AirTAC Airtac SC40 Standard Cylinder SC40X820S is a genuine double-acting standard air cylinder with a Ø40mm bore and 820mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X820S is a double-acting tie-rod cylinder delivering 628 N of push force at 0.5 MPa (1130 N at 0.9 MPa). Its 40 mm bore and 16 mm diameter piston rod drive an 820 mm stroke, making it a strong candidate for medium-length transfer and sorting tasks where a compact body length is required.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG reed and solid-state sensors to clamp directly onto the barrel for contactless position sensing. The standard PT1/4 port and M12x1.25 rod thread simplify pneumatic connections, while the 21 mm adjustable air cushion at each end protects the end caps from impact at speeds up to 800 mm/s.
| Model | Airtac SC40 Standard Cylinder SC40X820S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 820 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. |
| ×820 | 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 820 mm stroke pushes or pulls components between two conveyor lines. The built-in magnet lets you verify end-of-stroke with barrel-mounted sensors.
Operates a diverter gate in a logistics sorter. The 628 N force at 0.5 MPa is sufficient to move medium-weight packages reliably.
Shuttles a fixture or pallet into an assembly station. The adjustable cushion decelerates the 16 mm rod smoothly, protecting the tooling.
Choose the SC40 bore when your application needs between 628 N and 1130 N of force. If you need more force, step up to the SC50 (982 N at 0.5 MPa); if you need less, the SC32 provides 402 N. The 820 mm stroke is within the 1200 mm maximum standard stroke for this bore, so it is a stock-configuration item.
For this stroke length, ensure the 16 mm rod is not subjected to significant side loading, as long, unsupported rods can bend and damage the bearing. If side loads are unavoidable, use an external linear guide or switch to a guided cylinder. When replacing an existing unit, match five points: 40 mm bore, 820 mm stroke, PT1/4 port thread, the integrated magnet (-S), and the basic (no bracket) mounting style.
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.
Yes. The -S suffix means this cylinder has a built-in magnet. You can clamp AirTAC CMSG, DMSG, or EMSG sensors directly onto the tie-rod barrel to detect piston position without any additional brackets.
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