The AirTAC Airtac SC40 Standard Cylinder SC40X405S is a genuine double-acting standard air cylinder with a Ø40mm bore and 405mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X405S is a double-acting single-rod tie-rod cylinder delivering 628 N of push force at 0.5 MPa and up to 1130 N at 0.9 MPa. With a 40 mm bore and a 405 mm stroke, it uses a 16 mm diameter piston rod and PT1/4 ports, making it a solid mid-range actuator for general industrial automation.
The built-in magnet (denoted by the -S suffix) allows CMSG, DMSG, or EMSG reed and solid-state sensors to clamp directly onto the barrel for non-contact position sensing. Its adjustable air cushion (21 mm length) decelerates the piston smoothly at end-of-stroke, and the standard TPU seals provide reliable operation from -20 to +70 °C.
| Model | Airtac SC40 Standard Cylinder SC40X405S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 405 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. |
| ×405 | 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.
Operates diverter gates and sorting paddles on conveyor lines, where the 405 mm stroke provides ample reach and the magnetic piston enables end-of-stroke confirmation.
Delivers 628 N of clamping force at standard line pressure, ideal for holding workpieces during assembly, welding, or light machining operations.
Pushes cartons or products into case packers and wrappers. The sensor-ready barrel simplifies integration with PLC-controlled packaging sequences.
For higher force at the same pressure, step up to the 50 mm bore SC50 series, which offers 982 N push at 0.5 MPa. If a shorter, lighter cylinder is acceptable, the 32 mm bore SC32 provides 402 N. At 405 mm stroke, the 16 mm rod is well-supported within the cylinder, but if this cylinder experiences significant side loading, an external guide rail or guided cylinder configuration is strongly recommended to prevent rod bending and premature bearing wear.
When replacing an existing unit, match five points: 40 mm bore, 405 mm stroke, PT1/4 port thread, the basic mounting style (no integral bracket), and the -S magnet for sensor compatibility. This SC tie-rod cylinder is shorter than an ISO 15552 profile cylinder and is not dimensionally interchangeable with that standard.
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 indicates a built-in magnet in the piston, making the SC40X405S fully compatible with AirTAC CMSG (reed) and DMSG/EMSG (solid-state) sensors that clamp onto the barrel's tie-rod slots.
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