The AirTAC Airtac SC40 Standard Cylinder SC40X125STC 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 AirTAC SC40X125STC is a double-acting tie-rod cylinder with a 40 mm bore and 125 mm stroke, delivering a push force of 628 N at 0.5 MPa and up to 1130 N at the 0.9 MPa maximum operating pressure. This model includes a built-in magnet (-S suffix) for direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors, enabling precise end-of-stroke detection without external brackets.
It is factory-equipped with a TC centre trunnion mount (F-SC40TC), supplied together with the TCM1 trunnion bracket, making it ready to pivot for swinging or articulating load applications. The 16 mm diameter piston rod with M12x1.25 male thread provides robust linear guidance, while the adjustable air cushion at each end decelerates the piston smoothly over a 21 mm cushion length. The body length A is 142 mm, giving a total extended length of approximately 267 mm.
| Model | Airtac SC40 Standard Cylinder SC40X125STC |
|---|---|
| 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 125 mm stroke and centre trunnion mount allow the cylinder to pivot a diverter gate on packaging or sorting conveyors. Magnetic sensors confirm gate position for reliable automated routing.
With 628 N of clamping force at standard line pressure and sensor feedback, this cylinder secures parts in robotic welding or machining cells. The trunnion mount accommodates fixture articulation.
The TPU seals handle dusty, damp environments from -20 to +70 °C. The pivoting TC mount and magnetic position sensing suit chute controls or linkage actuation on harvesters and spreaders.
Choose the SC40X125STC when your application needs a compact tie-rod cylinder with sensor feedback and a pivoting mount. For higher force requirements, stepping up to the 50 mm bore (SC50) provides 982 N of push force at 0.5 MPa; for a smaller footprint where 402 N is sufficient, the SC32 bore is a lighter alternative. The TC centre trunnion allows the cylinder to swing through an arc, so ensure flexible air connections and sufficient clearance for the full pivot range.
For a drop-in replacement, match five key features: 40 mm bore, 125 mm stroke, PT1/4 port thread, centre trunnion (TC) mounting, and the built-in magnet (-S) for sensor compatibility. This is a non-ISO tie-rod cylinder; do not assume interchangeability with ISO 15552 profile cylinders, which have a longer body length.
Quick checklist
At 0.5 MPa (5 bar) the cylinder produces 628 N extending (push) and 528 N retracting (pull). At the maximum operating pressure of 0.9 MPa, the push force reaches 1130 N. The theoretical maximum at 1.0 MPa is 128 kgf.
No. The AirTAC SC series is a tie-rod cylinder with a shorter body length than an ISO 15552 profile cylinder. The mounting dimensions and overall length differ. Only replace another AirTAC SC tie-rod cylinder with the same bore, stroke, port thread, TC mount, and magnet option.
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