The AirTAC Airtac SC40 Standard Cylinder SC40X625S is a genuine double-acting standard air cylinder with a Ø40mm bore and 625mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X625S is a double-acting pneumatic cylinder from the AirTAC SC tie-rod series, combining a 40 mm bore with a 625 mm stroke. It generates a push force of 628 N at 0.5 MPa and can reach up to 1130 N at the maximum operating pressure of 0.9 MPa, making it suitable for medium-duty linear tasks.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors on the barrel for precise end-of-stroke or mid-stroke position sensing. The 16 mm diameter piston rod and PT1/4 port thread are standard for this bore size, with an adjustable air cushion of 21 mm to decelerate the piston smoothly.
| Model | Airtac SC40 Standard Cylinder SC40X625S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 625 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. |
| ×625 | 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.
Actuates a diverter gate on a packaging line, using the 628 N push force to redirect boxes. The built-in magnet confirms gate position for the central PLC.
Powers a pneumatic clamp on a CNC machining center. The 625 mm stroke provides ample reach, and the sensor confirms the part is secured before the cycle starts.
Raises and lowers a heavy-duty stop at the end of a gravity conveyor. The adjustable cushion absorbs the impact of moving pallets, while the magnet signals the stop's status.
Choose the SC40X625S for applications needing a 40 mm bore with sensor feedback. For higher force requirements, stepping up to the 50 mm bore (SC50) provides 982 N of push force at the same 0.5 MPa pressure. If a shorter, more compact cylinder is acceptable, the 32 mm bore (SC32) delivers 402 N.
This cylinder has a 625 mm stroke. For strokes of 300 mm or more, be cautious of side loads which can cause rod bending or uneven bearing wear. It is recommended to use an external guide rail or a guided cylinder assembly to absorb lateral forces and protect the rod and seals. When replacing an existing unit, match these five points exactly: 40 mm bore, 625 mm stroke, PT1/4 port thread, basic mount (no bracket), and the -S magnet for sensor compatibility.
Quick checklist
At the standard operating pressure of 0.7 MPa, the push force is 879 N. The pull force on the retract stroke is slightly lower at 528 N at 0.5 MPa due to the area of the 16 mm piston rod.
Yes. The -S suffix in the model code SC40X625S signifies a built-in magnet. This allows you to clamp compatible AirTAC CMSG, DMSG, or EMSG sensors directly onto the tie-rod barrel to detect piston position without any additional brackets.
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