The AirTAC Airtac SC40 Standard Cylinder SC40X725 is a genuine double-acting standard air cylinder with a Ø40mm bore and 725mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X725 is a double-acting pneumatic cylinder from the AirTAC SC tie-rod series, combining a 40 mm bore with a 725 mm stroke. At 0.5 MPa air pressure it generates 628 N of push force and 528 N on the pull stroke, scaling to 1130 N at the maximum operating pressure of 0.9 MPa, making it a capable actuator for medium-duty linear tasks.
This model features a 16 mm diameter piston rod with M12x1.25 male threads and PT1/4 ports. The total extended body length is approximately 867 mm (142 mm body length A plus the 725 mm stroke). An adjustable air cushion at each end, with a 21 mm cushion length, decelerates the piston smoothly to reduce end-of-stroke impact.
| Model | Airtac SC40 Standard Cylinder SC40X725 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 725 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. |
| ×725 | 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 725 mm stroke and 628 N push force at 0.5 MPa suit actuating diverter gates on wide conveyor lines, smoothly redirecting parcels or components between lanes.
Ideal for pushing finished parts off a deep fixture or press bed where a shorter cylinder cannot reach, using the full 725 mm travel for complete clearance.
Provides the extended linear motion needed to shift pallet layers or align tall stacks in automated warehousing equipment, leveraging the adjustable cushion for gentle handling.
For applications needing more force, stepping up to the 50 mm bore SC50 series provides 982 N of push at 0.5 MPa. If a shorter, more rigid assembly is acceptable, the 32 mm bore SC32 delivers 402 N at the same pressure. With a 725 mm stroke, the unsupported rod length is significant; side loads or off-centre mounting can cause rod bending and premature bearing wear, so an external linear guide or a rod-alignment coupler is strongly recommended.
To replace an existing SC40X725, match five key points: 40 mm bore, 725 mm stroke, PT1/4 port thread, the specific mounting accessory (this is a basic model without a bracket), and confirm whether a magnet is needed (this unit has no built-in magnet). The SC is a tie-rod cylinder and is not dimensionally interchangeable with ISO 15552 profile cylinders.
Quick checklist
At 0.7 MPa (7 bar) supply pressure, the theoretical push force on the 40 mm bore is 879 N. The pull force on the retract stroke is lower due to the 16 mm rod area and equals 528 N at 0.5 MPa; confirm the exact pull force at 0.7 MPa from the datasheet.
This basic model SC40X725 ships without a mounting bracket. You can order the centre trunnion kit separately using the accessory code F-SC40TC, which includes the TCM1 bracket and allows the cylinder to pivot. The full ordering code for a factory-assembled trunnion version would be SC40X725TC.
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