The AirTAC Airtac SC40 Standard Cylinder SC40X125CA 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 SC40X125CA is a double-acting tie-rod cylinder with a 40 mm bore and 125 mm stroke, factory-assembled with a rear single clevis (CA) for pivoting applications. At 0.5 MPa it provides 628 N of push force and 528 N on the pull stroke, making it a capable mid-range actuator for moderate transfer and clamping tasks.
This model uses a 16 mm diameter piston rod with an M12x1.25 male thread and PT1/4 ports. The adjustable air cushion (21 mm length) decelerates the piston smoothly at end-of-stroke, while the CA clevis mount (part F-SC40CA) allows the cylinder body to pivot, accommodating angular misalignment in lever or linkage-driven mechanisms.
| Model | Airtac SC40 Standard Cylinder SC40X125CA |
|---|---|
| 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 628 N push force at 0.5 MPa and rear clevis mount make it ideal for pivoting clamp arms on welding or assembly fixtures.
With a 125 mm stroke and pivoting rear mount, this cylinder can actuate flipper gates on small-package conveyor lines.
The CA clevis allows the cylinder to drive linkages on compact agricultural equipment like seed drill metering units.
The SC40X125CA suits applications needing a pivoting rear mount and moderate force. If your load requires more thrust, stepping up to the SC50 bore delivers 982 N push at the same 0.5 MPa pressure. For lighter, faster cycling, the SC32 bore offers 402 N push.
When replacing an existing cylinder, match five points: 40 mm bore, 125 mm stroke, PT1/4 port thread, rear single clevis (CA) mounting, and confirm whether a magnet (-S) is needed for sensor feedback. The CA clevis is designed for pivoting motion; ensure the mounting pin is sized for the clevis eye to avoid binding.
Quick checklist
At the standard 0.5 MPa operating pressure, 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.
This specific model (SC40X125CA) does not include the -S magnet option, so standard reed or solid-state sensors cannot be mounted on the barrel. If position sensing is required, order the SC40X125S-CA variant which includes a built-in magnet compatible with CMSG/DMSG/EMSG sensors.
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