The AirTAC Airtac SC40 Standard Cylinder SC40X120 is a genuine double-acting standard air cylinder with a Ø40mm bore and 120mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X120 is a double-acting pneumatic cylinder that generates 628 N of push force at 0.5 MPa (879 N at 0.7 MPa), making it a capable mid-range actuator for pressing, clamping, and transfer tasks. Its 16 mm diameter piston rod and 21 mm adjustable air cushion at each end provide smooth deceleration without external shock absorbers.
With a compact body length of 142 mm plus the 120 mm stroke, this tie-rod cylinder fits into spaces where an ISO 15552 profile cylinder would be too long. The PT1/4 port thread and M12x1.25 rod thread are standard, and the operating range of 0.15–1.0 MPa covers most factory air supplies.
| Model | Airtac SC40 Standard Cylinder SC40X120 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 120 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. |
| ×120 | 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.
Pushes or diverts small to medium components on conveyor lines. The 120 mm stroke gives enough reach for lane diverters and reject stations.
Delivers 628 N at 0.5 MPa for pressing bushings, bearings, or clips into housings in semi-automated assembly fixtures.
Acts as a pneumatic clamp for workpieces in CNC machining or welding jigs, where the adjustable cushion protects the fixture from impact.
Choose the SC40X120 when your application needs roughly 600–900 N of force. If you need more thrust, stepping up to the SC50 (982 N at 0.5 MPa) adds about 56% more push; if you need less, the SC32 (402 N) saves space and air consumption. For strokes of 120 mm, rod buckling is rarely a concern, but any side load should be carried by an external guide or linear bearing—this cylinder is designed for axial push/pull only.
When replacing an existing cylinder, match five points: 40 mm bore, 120 mm stroke, PT1/4 ports, the specific mounting accessory (this basic model has none), and whether a magnet is needed (this unit has no magnet).
Quick checklist
At 0.5 MPa the push force is 628 N and pull force is 528 N. At 0.7 MPa push rises to 879 N, and at the maximum operating pressure of 0.9 MPa it reaches 1130 N. The theoretical maximum at 1.0 MPa is 128 kgf.
No. The SC series is a tie-rod cylinder and is shorter in overall length than an ISO 15552 profile cylinder, so mounting dimensions and body length differ. It is a direct replacement only for another AirTAC SC40 cylinder with the same bore, stroke, port thread, and mounting configuration.
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