The AirTAC Airtac SC40 Standard Cylinder SC40X126S is a genuine double-acting standard air cylinder with a Ø40mm bore and 126mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X126S is a double-acting single-rod pneumatic cylinder with a 40 mm bore and 126 mm stroke, delivering a push force of 628 N at 0.5 MPa (up to 1130 N at 0.9 MPa). Its 16 mm diameter piston rod and PT1/4 port provide a balanced combination of strength and flow for medium-duty linear tasks.
This model includes the -S suffix for a built-in magnet, allowing direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors on the barrel for non-contact position detection. The standard TPU seals offer reliable operation from -20 to +70 °C, and the adjustable air cushion at each end ensures smooth deceleration.
| Model | Airtac SC40 Standard Cylinder SC40X126S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 126 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. |
| ×126 | 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 126 mm stroke and 628 N push force efficiently actuate gates or diverters on medium-speed packaging conveyors, with the magnetic piston enabling end-of-stroke sensor feedback to the PLC.
Ideal for pneumatic clamping jigs in CNC machining or assembly, where the 16 mm rod provides good rigidity and the built-in magnet allows compact sensor placement for clamp-open/closed confirmation.
Use this cylinder for short vertical lifts or part transfer units. The adjustable cushion protects the end caps during high-cycle operation, and the 40 mm bore offers a robust force margin for guided payloads.
Select the SC40 bore when your application requires between 628 N and 1130 N of force (at 0.5-0.9 MPa). If you need more force, step up to the SC50 which provides 982 N at 0.5 MPa; for a lighter, more compact solution, the SC32 delivers 402 N. The 126 mm stroke is within the 1200 mm maximum standard range for this bore.
For drop-in replacement, match five key points: 40 mm bore, 126 mm stroke, PT1/4 port thread, the built-in magnet (-S), and the basic mounting configuration. The SC is a tie-rod cylinder and is not dimensionally interchangeable with ISO 15552 profile cylinders.
Quick checklist
At 0.5 MPa, the push force is 628 N and the pull force is 528 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 1130 N. The theoretical maximum force at 1.0 MPa is 128 kgf.
Yes. The -S suffix indicates a built-in magnet in the piston. You can clamp AirTAC CMSG, DMSG, or EMSG sensors directly onto the tie-rod barrel to detect piston position without additional brackets.
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