The AirTAC SC40 Standard Cylinder SC40X125FA is a genuine double-acting standard air cylinder with a Ø40mm bore and 125mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X125FA is a double-acting pneumatic cylinder from the AirTAC SC tie-rod series, combining a 40 mm bore with a 125 mm stroke. It generates a push force of 628 N at 0.5 MPa and reaches 1130 N at the maximum operating pressure of 0.9 MPa, making it a solid mid-range actuator for light industrial tasks.
This model includes an FA front rectangular flange (accessory F-SC40FA) for secure panel or bulkhead mounting. The 16 mm diameter piston rod and 21 mm adjustable air cushion at each end provide reliable deceleration, while the PT1/4 port thread ensures straightforward pneumatic connections.
| Model | Airtac SC40 Standard Cylinder SC40X125FA |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 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. |
| ×125 | 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 628 N force at 0.5 MPa is ideal for pneumatic clamping fixtures in CNC machining or assembly jigs, holding parts securely during drilling or fastening.
Use the 125 mm stroke to push finished parts off a conveyor or out of a forming die, where the front flange mount keeps the cylinder rigidly aligned.
Delivers consistent, clean linear force for small hydraulic-press substitutes in lab sample preparation or material testing rigs.
Choose the SC40 when your application needs roughly 600-1100 N of push force. If you require more power, step up to the SC50 bore which delivers 982 N at 0.5 MPa; for a lighter, more compact solution, the SC32 provides 402 N. The 125 mm stroke is standard for this bore and suits short clamping or ejecting motions.
For a direct replacement, match five points: 40 mm bore, 125 mm stroke, PT port thread, FA front flange mounting, and the absence of a magnet. This cylinder is a tie-rod design and is not dimensionally interchangeable with ISO 15552 profile cylinders.
Quick checklist
At 0.7 MPa operating pressure, the SC40 bore generates a theoretical push force of 879 N. The pull force on the retract stroke is lower due to the rod area, delivering 528 N at 0.5 MPa.
Yes. The FA front flange is supplied with this model, but you can order alternative AirTAC SC-series mounts like foot (LB) or rear clevis (CA/CB) separately using the F-SC40 part code prefix. Ensure the mounting bolts match the cylinder's tie-rod dimensions.
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