The AirTAC Airtac SC40 Standard Cylinder SC40X73S is a genuine double-acting standard air cylinder with a Ø40mm bore and 73mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X73S is a double-acting pneumatic cylinder from the AirTAC SC tie-rod series, featuring a 40 mm bore and a 73 mm stroke. This model includes a built-in magnet, enabling direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors on the barrel for precise end-of-stroke or mid-stroke position feedback without external brackets.
At 0.5 MPa operating pressure, the 16 mm diameter piston rod delivers a theoretical pushing force of 628 N and a pulling force of 528 N. The cylinder body has a length of 142 mm, and with its 21 mm adjustable air cushion at each end, it effectively decelerates the piston to reduce impact noise and vibration, suiting it for repetitive handling tasks.
| Model | Airtac SC40 Standard Cylinder SC40X73S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 73 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. |
| ×73 | 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 73 mm stroke and sensor-ready design make it ideal for actuating diverter gates or stop pins on packaging lines, where the magnet confirms gate position to the PLC.
Delivers a controlled 628 N push at 0.5 MPa to feed components into a stamping or forming die, with the sensor verifying full retraction before the next cycle.
Applies consistent clamping force in a laboratory or production test rig, with the magnetic sensor providing a digital signal to confirm the part is secured.
Choose the SC40X73S when your application needs sensor-based position confirmation in a compact 40 mm bore package. The built-in magnet (-S suffix) eliminates the need for separate sensor mounting hardware. If your force requirement is lower, stepping down to the 32 mm bore reduces push force to 402 N at 0.5 MPa. For higher forces, the 50 mm bore provides 982 N at the same pressure.
To ensure a correct replacement, match five key points: 40 mm bore, 73 mm stroke, PT port thread, the built-in magnet for sensors, and the basic mounting style. This is a tie-rod cylinder, not an ISO 15552 profile, so dimensional interchangeability is limited to another AirTAC SC cylinder with identical specifications.
Quick checklist
At the standard 0.5 MPa operating pressure, the cylinder produces a theoretical push force of 628 N and a pull force of 528 N. At the maximum operating pressure of 0.9 MPa, the push force increases to 1130 N.
Yes. The 'S' suffix in the model code SC40X73S indicates a built-in magnetic piston. This allows you to attach AirTAC CMSG (reed) or DMSG/EMSG (solid-state) sensors directly to the barrel's sensor groove to detect piston position.
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