The AirTAC Airtac SC40 Standard Cylinder SC40X125TC 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 SC40X125TC is a double-acting pneumatic cylinder from the AirTAC SC tie-rod series, combining a 40 mm bore with a 125 mm stroke. At 0.5 MPa it provides 628 N of push force, making it a capable mid-range actuator for moderate transfer and clamping tasks. The 16 mm diameter piston rod and 21 mm air cushion at each end deliver smooth deceleration without external shock absorbers.
This model is factory-configured with a centre trunnion (TC) mount, supplied together with the TCM1 bracket (accessory code F-SC40TC). The trunnion allows the cylinder body to pivot, accommodating angular movement in the driven load. Standard PT1/4 ports and TPU seals suit normal compressed-air environments from -20 to +70 °C.
| Model | Airtac SC40 Standard Cylinder SC40X125TC |
|---|---|
| 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 centre-trunnion mount lets the cylinder pivot as it extends, ideal for swinging a diverter gate on a conveyor line. The 125 mm stroke provides enough travel to redirect small to medium packages.
With 628 N of push force at 0.5 MPa, the SC40X125TC holds workpieces securely during machining or assembly. The adjustable cushion protects the fixture from impact at end-of-stroke.
The trunnion mount allows the cylinder to follow an arc, making it a direct fit for bell-crank linkages and lever-operated mechanisms in packaging or textile machinery.
For applications needing more force, stepping up to the 50 mm bore SC50 series raises push force to 982 N at 0.5 MPa. If space is tight and the load is lighter, the 32 mm bore SC32 delivers 402 N. The 125 mm stroke is well within the 1200 mm maximum standard stroke for bore 40, so this is a stock-configuration cylinder.
To replace an existing SC40X125TC, match five points: 40 mm bore, 125 mm stroke, PT1/4 port thread, centre-trunnion mounting with TCM1 bracket, and the absence of a built-in magnet. Always verify the port type (PT vs G) and seal material before ordering.
Quick checklist
At 0.5 MPa the cylinder produces 628 N extending (push) and 528 N retracting (pull). 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 with a shorter body length than an ISO 15552 profile cylinder, so mounting dimensions and overall length differ. Use this model to replace another AirTAC SC40 cylinder with matching bore, stroke, port, and mounting.
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