The AirTAC Airtac SC40 Standard Cylinder SC40X1270S is a genuine double-acting standard air cylinder with a Ø40mm bore and 1270mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X1270S is a double-acting pneumatic cylinder from the AirTAC SC tie-rod series, combining a 40 mm bore with an extended 1270 mm stroke. This configuration delivers a theoretical push force of 628 N at 0.5 MPa and 1130 N at 0.9 MPa, making it suitable for long-reach transfer and actuation tasks where standard stroke lengths are insufficient.
This model features a built-in magnet (suffix -S), allowing direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the barrel for precise position feedback. The 16 mm diameter piston rod and 21 mm adjustable air cushion at each end provide reliable deceleration. Note that the 1270 mm stroke exceeds the standard maximum of 1200 mm for the 40 bore, classifying this as a non-standard, made-to-order length.
| Model | Airtac SC40 Standard Cylinder SC40X1270S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 1270 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. |
| ×1270 | 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.
Moves light components across wide conveyor gaps or between distant stations in packaging and assembly lines, using its 1270 mm reach and sensor-confirmed end positions.
Pushes or pulls bins, trays, or low-friction sleds over extended linear paths where a compact cylinder body length relative to stroke is beneficial.
The built-in magnet allows engineers to clamp CMSG/DMSG sensors directly to the tie-rod barrel for open/closed-loop control in automated machinery.
Select the SC40X1270S for applications requiring a light, long-stroke pneumatic push or pull within the 628 N force class at 0.5 MPa. If higher force is needed, stepping up to the 50 mm bore provides 982 N at the same pressure. For strokes of this length, the 16 mm rod is susceptible to bending under side loads; always guide the load externally or use a guided cylinder to protect the rod bearings and seals.
When replacing this cylinder, match five key points: 40 mm bore, 1270 mm stroke, PT port thread, the built-in magnet for sensor compatibility, and the basic mounting style. This tie-rod cylinder is dimensionally shorter than an ISO 15552 profile and is not a drop-in replacement for that standard.
Quick checklist
The theoretical push force at 0.5 MPa is 628 N, and the pull force is 528 N. At the maximum operating pressure of 0.9 MPa, the push force increases to 1130 N. Actual force depends on system pressure and friction.
No. The maximum standard stroke for the 40 mm bore SC series is 1200 mm. The 1270 mm stroke is a non-standard, made-to-order length. For long strokes, always use an external guide to prevent rod bending and ensure seal longevity.
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