The AirTAC Airtac SC40 Standard Cylinder SC40X1275S is a genuine double-acting standard air cylinder with a Ø40mm bore and 1275mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X1275S is a double-acting tie-rod cylinder with a 40 mm bore and an extended 1275 mm non-standard stroke, delivering 628 N of push force at 0.5 MPa (1130 N at 0.9 MPa). This model includes a built-in magnet, enabling direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors along the barrel for precise, contactless position feedback.
With a 16 mm diameter piston rod and PT1/4 ports, the SC40X1275S is designed for filtered air operation from 0.15 to 1.0 MPa. Its adjustable pneumatic cushion decelerates the piston over the final 21 mm of travel, reducing end-of-stroke impact. The total extended body length is approximately 1417 mm, making it suitable for long linear movements in automation.
| Model | Airtac SC40 Standard Cylinder SC40X1275S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 1275 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. |
| ×1275 | 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 1275 mm stroke and magnetic piston sensing make this cylinder ideal for transferring parts between distant conveyor lines, providing full-stroke position confirmation.
Delivers consistent 628 N force for a long-travel adhesive bead application, with sensors verifying end positions for precise cycle control.
Operates a tall material gate or diverter chute, using the adjustable cushion to manage the moving mass and the magnet for open/closed status feedback.
For applications requiring a 40 mm bore, the SC40X1275S provides 628 N at 0.5 MPa. If higher force is needed, stepping up to a 50 mm bore (SC50) offers 982 N at the same pressure; for a lighter, more compact solution, a 32 mm bore (SC32) provides 402 N. This 1275 mm stroke exceeds the 1200 mm maximum standard stroke for bore 40, classifying it as a made-to-order non-standard stroke.
At this stroke length, the 16 mm rod is susceptible to bending under side loads. An external linear guide or a guided cylinder configuration is strongly recommended to protect the rod bearings and ensure reliable operation. For direct replacement, match the 40 mm bore, 1275 mm stroke, PT1/4 port thread, basic mounting, and the -S magnet option.
Quick checklist
At the standard operating pressure of 0.5 MPa, the push force is 628 N. The maximum operating push force at 0.9 MPa is 1130 N. The theoretical force at 1.0 MPa is 128 kgf.
Yes, it is strongly recommended. The 16 mm diameter rod on this 40 mm bore cylinder can bend under side loads at full extension. An external guide rail or a guided cylinder assembly prevents rod bearing damage and ensures long service life.
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