The AirTAC Airtac SC40 Standard Cylinder SC40X125CB 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 SC40X125CB is a double-acting single-rod pneumatic cylinder with a 40 mm bore and 125 mm stroke, delivering 628 N of push force at 0.5 MPa (1130 N at the maximum operating pressure of 0.9 MPa). Its 16 mm diameter piston rod and 21 mm adjustable air cushion at each end provide smooth deceleration for medium-duty linear tasks.
This model is factory-configured with a CB rear double clevis mount (fork-style, part code F-SC40CB), allowing the cylinder body to pivot during operation. The standard PT1/4 port thread and TPU seals suit filtered-air systems operating from -20 to +70 °C. The total extended body length is approximately 267 mm (142 mm body length A + 125 mm stroke).
| Model | Airtac SC40 Standard Cylinder SC40X125CB |
|---|---|
| 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 rear double clevis mount lets the SC40X125CB pivot freely, making it ideal for actuating linkages, levers, and dump mechanisms on agricultural or construction equipment.
With 125 mm of stroke and 628 N of push force, this cylinder reliably shifts diverter gates on packaging and material-handling conveyors, directing products between lanes.
The adjustable cushion protects tooling during high-cycle clamping operations. The clevis mount simplifies installation on pivoting fixture arms in machining and welding cells.
Choose the SC40 bore for push forces around 628 N at 0.5 MPa; if your application demands roughly 982 N, step up to the SC50 series. For strokes of 125 mm on a 40 mm bore, side loads are typically manageable, but always align the rod with the load axis to prevent bending. When replacing an existing cylinder, match five points: 40 mm bore, 125 mm stroke, PT1/4 port thread, CB rear double clevis mounting, and the absence of a magnet. This SC40X125CB 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, 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 has a shorter body length than an ISO 15552 cylinder. It is not dimensionally interchangeable. It directly replaces another AirTAC SC40 cylinder with the same bore, stroke, PT port, and CB clevis mount.
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