The AirTAC Airtac SC40 Standard Cylinder SC40X120SN 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 SC40X120SN is a double-acting pneumatic cylinder delivering 628 N of push force and 528 N of pull force when operated at 0.5 MPa. Its 40 mm bore and 120 mm stroke are paired with a 16 mm diameter piston rod and PT1/4 ports, making it a reliable linear actuator for medium-duty automation tasks.
This model includes a built-in magnet (-S suffix) for direct mounting of CMSG/DMSG/EMSG sensors, enabling precise end-of-stroke detection without external brackets. The NBR seal (-N suffix) provides consistent performance within the standard temperature range of -20 to +70 °C, and the adjustable air cushion at each end decelerates the piston smoothly to reduce impact noise.
| Model | Airtac SC40 Standard Cylinder SC40X120SN |
|---|---|
| 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.
Actuates diverter gates on conveyor lines. The 628 N push force at 0.5 MPa reliably shifts packages, while the built-in magnet confirms gate position to the PLC.
Provides consistent clamping force for CNC jigs and assembly fixtures. The NBR seals and 120 mm stroke suit medium-duty workholding where sensor feedback prevents cycle start without part presence.
Drives a compact press platen in case sealers or label applicators. The adjustable cushion ensures a soft stop at full extension, protecting the tooling and reducing maintenance intervals.
For applications needing slightly more force, stepping up to the SC50 bore provides 982 N of push force at the same 0.5 MPa pressure. If a shorter overall envelope is required, the SC40X100 offers a 20 mm reduction in stroke while maintaining the same mounting footprint. Always verify that the side load on the 16 mm rod is within acceptable limits; for strokes over 300 mm or significant lateral forces, consider an external guide rail to prevent rod bearing wear.
When replacing an existing cylinder, match five key points: 40 mm bore, 120 mm stroke, PT1/4 port thread, the built-in magnet for sensor compatibility, and the basic (no bracket) mounting style. This ensures the SC40X120SN drops into the same space and connects to the same pneumatic circuit without modification.
Quick checklist
At 0.7 MPa operating pressure, the theoretical push force is 879 N and the pull force is 528 N (pull force is calculated at 0.5 MPa in the standard table; confirm pull force at 0.7 MPa from the full datasheet). The maximum operating force at 0.9 MPa is 1130 N push.
No. The SC series is a tie-rod cylinder with a shorter body length than an ISO 15552 profile cylinder. Its mounting accessories (like foot mount LB or flange FA/FB) use the F-SC40 part code pattern and are not dimensionally interchangeable with ISO 15552 mounts. Only use AirTAC SC-specific mounting kits.
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