The AirTAC SC40 Standard Cylinder SC40X70H is a genuine double-acting standard air cylinder with a Ø40mm bore and 70mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X70H is a double-acting pneumatic cylinder with a 40 mm bore and 70 mm stroke, factory-equipped with Viton (FKM) seals for reliable operation in high-temperature environments up to 150°C. At 0.5 MPa air pressure it generates 628 N of push force and 528 N on the pull stroke, making it a capable mid-range actuator for hot-zone automation.
This tie-rod cylinder uses a 16 mm diameter piston rod with M12x1.25 male threads and PT1/4 ports. The adjustable air cushion at each end provides 21 mm of deceleration to soften end-of-stroke impact. With a body length A of 142 mm, the total extended length is approximately 212 mm.
| Model | Airtac SC40 Standard Cylinder SC40X70H |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 70 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. |
| ×70 | 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 the SC40X70H to operate continuously in ambient temperatures up to 150°C, making it suitable for actuators near ovens, autoclaves, or heated presses where standard seals would degrade.
With 628 N of push force at 0.5 MPa, this cylinder reliably ejects freshly molded or cast parts from hot tooling onto a conveyor, maintaining cycle speed without seal failure.
The FKM seal material resists steam and aggressive cleaning agents better than standard TPU, making this cylinder a fit for door locks or valve actuation inside medical sterilizers.
Choose the SC40 bore when your application needs between 500 N and 1100 N of force at standard plant air. If you need more thrust, stepping up to the SC50 delivers 982 N at the same 0.5 MPa. For strokes over 300 mm, consider an external guide rail or a guided cylinder to protect the 16 mm rod from bending under side loads.
When replacing an existing cylinder, match five key points: 40 mm bore, 70 mm stroke, PT1/4 port thread, basic (no bracket) mounting, and the Viton seal designation (H suffix). This model does not include a magnet, so magnetic piston sensors are not supported.
Quick checklist
At the standard 0.5 MPa operating pressure, the push force is 628 N and the pull force is 528 N. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 1130 N.
No. The SC40X70H does not have the -S magnet option in its ordering code, so the piston does not carry a magnetic ring. To use CMSG or DMSG sensors, you would need the SC40X70HS variant.
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