The AirTAC Airtac SC40 Standard Cylinder SC40X420SH is a genuine double-acting standard air cylinder with a Ø40mm bore and 420mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X420SH is a double-acting single-rod tie-rod cylinder delivering 628 N of push force at 0.5 MPa (1130 N at 0.9 MPa). Its 40 mm bore houses a 16 mm diameter piston rod with M12x1.25 male threads, and the 420 mm stroke suits medium-reach clamping, pressing, and material-transfer tasks where heat resistance is essential.
This model carries the -S magnet suffix for direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors on the barrel, and the -H seal suffix upgrades the standard TPU seals to Viton (FKM), shifting the operating temperature range from -20–+70 °C to 0–+150 °C. The PT1/4 port and 21 mm adjustable air cushion remain standard, giving controlled deceleration in hot environments such as drying ovens or autoclave tooling.
| Model | Airtac SC40 Standard Cylinder SC40X420SH |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 420 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. |
| ×420 | 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.
Viton seals allow continuous operation up to 150 °C, making this cylinder ideal for actuating dampers, gates, or clamps inside ovens, dryers, and heated presses.
The built-in magnet (-S) lets you mount CMSG/DMSG sensors directly on the tie-rod barrel to confirm extend/retract position in automated pick-and-place or assembly fixtures.
With 420 mm of stroke and 628 N of push force at standard shop air, it reliably pushes or diverts medium-weight products on conveyors and packaging lines.
For applications needing more force, stepping up to the 50 mm bore SC50 series provides 982 N push at 0.5 MPa (1374 N at 0.7 MPa). If a shorter, more compact cylinder is acceptable, the 32 mm bore SC32 series delivers 402 N at 0.5 MPa in a lighter package. At 420 mm stroke, the rod is extended well beyond the 142 mm body length; ensure side loads are minimal or use an external linear guide to protect the rod bearing from bending moments.
When replacing an existing cylinder, match five points: 40 mm bore, 420 mm stroke, PT1/4 port thread, the built-in magnet (-S) for sensor compatibility, and the Viton seal (-H) if the original also runs above 70 °C. The SC is a tie-rod design and is not dimensionally interchangeable with ISO 15552 profile cylinders.
Quick checklist
At 0.5 MPa the cylinder pushes with 628 N and pulls with 528 N. At 0.7 MPa push force rises to 879 N, and at the maximum operating pressure of 0.9 MPa it reaches 1130 N. The theoretical maximum at 1.0 MPa is 128 kgf.
No. The SC40X420SH is a double-acting pneumatic cylinder and will drift or drop if pressure is exhausted or the directional valve is centred. For load holding without live pressure, add an external rod lock, a pilot-operated check valve, or a mechanical brake.
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