The AirTAC SC Standard Cylinders SC40X50 is a genuine double-acting standard air cylinder with a Ø40mm bore and 50mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X50 is a compact double-acting tie-rod cylinder with a 40 mm bore and a short 50 mm stroke. At the common 0.5 MPa working pressure it delivers about 628 N on the push stroke and 528 N on the pull stroke, rising to 879 N at 0.7 MPa. Its 16 mm rod gives the short stroke solid buckling margin, and the 21 mm adjustable cushion soaks up end-of-stroke impact.
The body length A is 142 mm, so the fully extended length is roughly 192 mm - ideal where a longer cylinder simply will not fit. Ports are PT1/4, the rod thread is M12x1.25, and the standard TPU seal set covers -20 to +70 C. Operating range is 0.15-1.0 MPa with a 1.5 MPa proof pressure.
| Model | Airtac SC Standard Cylinders SC40X50 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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. |
| ×50 | 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 50 mm stroke is a natural fit for jigs and fixtures that need a quick 628 N clamp-and-release cycle at 0.5 MPa without wasting cycle time on excess travel.
With 879 N available at 0.7 MPa, the SC40X50 handles light pressing, staking and snap-fit assembly on compact benches where a full-size press is overkill.
A 50 mm throw is enough to kick small parts off a conveyor or flip a divert gate, and the 21 mm adjustable cushion keeps the gate from slamming at speed.
For this 50 mm stroke, the SC40X50 suits loads in the 30-60 kg class at moderate speeds (30-800 mm/s). If your load needs more than about 600 N at 0.5 MPa, step up to the SC50 bore, which produces 982 N at the same pressure; if the load is light and space is tight, the SC32 (402 N at 0.5 MPa) may be enough. Keep side loads off the rod - this model has no external guide, so use tooling or a guided cylinder if the load is not aligned.
Replacing an existing unit? Match all five points: 40 mm bore, 50 mm stroke, PT1/4 port thread (or specify G), the same mounting accessory, and the magnet option (-S) if the original had one. This SC is a tie-rod cylinder, not an ISO 15552 profile, so confirm the original is also an AirTAC SC or equivalent tie-rod type before ordering.
Quick checklist
At 0.5 MPa it pushes with about 628 N and pulls with about 528 N. At 0.7 MPa the push force is 879 N, and at the 0.9 MPa maximum operating pressure it reaches 1130 N. The theoretical maximum is around 128 kgf at 1.0 MPa.
Match five things: the 40 mm bore, the 50 mm stroke, the PT1/4 port thread (or order the G-thread version), the mounting accessory code, and whether the original had the -S magnet option. Note the SC is a tie-rod cylinder that is shorter than an ISO 15552, so it is not a dimensional direct for ISO profile cylinders.
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