The AirTAC Airtac SC40 Standard Cylinder SC40X125S 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 SC40X125S is a double-acting pneumatic tie-rod cylinder delivering 628 N of push force at 0.5 MPa (1130 N at 0.9 MPa). Its 40 mm bore and 125 mm standard stroke suit medium-force clamping, pressing, and material-transfer tasks where space is tighter than a 50 mm bore. The 16 mm diameter piston rod and 21 mm adjustable air cushion provide smooth deceleration at end-of-stroke.
This model carries the -S magnet suffix, meaning a built-in magnet is fitted on the piston. You can clamp CMSG, DMSG, or EMSG reed and solid-state sensors directly onto the barrel for non-contact position sensing without extra brackets. The cylinder uses PT1/4 ports, an M12×1.25 rod thread, and operates on filtered air from 0.15 to 1.0 MPa.
| Model | Airtac SC40 Standard Cylinder SC40X125S |
|---|---|
| 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 628 N push force at 0.5 MPa reliably stop or divert small to medium packages on belt conveyors. The built-in magnet lets you add sensors to confirm retracted and extended positions for sequencing.
With 1130 N available at 0.9 MPa, this cylinder handles press-fit and staking operations for small components. The adjustable cushion protects tooling by softening the impact at full extension.
Use the SC40X125S to open and close hopper gates or chute flaps. The 16 mm rod resists bending under axial loads, and the -S magnet enables end-of-travel feedback to your PLC.
Choose the SC40X125S when 628 N at 0.5 MPa meets your load requirement. If you need more force, stepping up to the SC50 bore provides 982 N at the same pressure. For lighter, faster applications, the SC32 bore offers 402 N. Always verify that the 125 mm stroke does not expose the rod to excessive side load; if lateral forces are present, add an external guide or switch to a guided cylinder.
For replacement, match these five points: 40 mm bore, 125 mm stroke, PT1/4 ports, the built-in magnet (-S), and the basic (no bracket) mounting. This tie-rod cylinder is shorter than an ISO 15552 profile, so it is not a drop-in replacement for ISO 15552 cylinders.
Quick checklist
At 0.5 MPa, push force is 628 N and pull force is 528 N. At the maximum operating pressure of 0.9 MPa, 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 and is shorter in overall length than an ISO 15552 profile cylinder. It is dimensionally interchangeable only with another AirTAC SC tie-rod cylinder of the same bore, stroke, port thread, and magnet option.
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