The AirTAC SC50 Standard Cylinder SC50X8 is a genuine double-acting standard air cylinder with a Ø50mm bore and 8mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC50X8 is a compact-stroke member of the AirTAC SC tie-rod cylinder family, delivering 982 N of push force at 0.5 MPa and up to 1767 N at 0.9 MPa. Its 8 mm stroke suits precise short-travel positioning, clamping, or ejection tasks where a 20 mm diameter piston rod provides excellent rigidity.
With a body length A of just 150 mm and a 21 mm adjustable air cushion, this double-acting cylinder decelerates the piston smoothly even in rapid short-cycle applications. The standard PT1/4 ports and M16x1.5 rod thread offer straightforward pneumatic integration.
| Model | Airtac SC50 Standard Cylinder SC50X8 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 8 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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 | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (approx.) | 200 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. |
|---|---|
| 50 | Bore size in mm. |
| ×8 | 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 8 mm stroke and 982 N force at 0.5 MPa make it ideal for pneumatic clamping fixtures where the jaw travel is minimal but holding force must be consistent.
Delivers a crisp, repeatable 8 mm push to eject small parts from a die or nest, with the adjustable cushion preventing bounce at the end of the stroke.
Operates a small diverter gate on a conveyor line, using its compact body length to fit into tight machine envelopes while providing rapid 30-800 mm/s actuation.
For applications needing slightly more force, stepping up to the 63 mm bore SC63 series provides 1559 N at 0.5 MPa. If space is the primary constraint and 982 N is sufficient, the SC50X8 is the right choice. The short 8 mm stroke naturally limits side-load leverage, but for any off-axis loading ensure the load is externally guided.
When replacing an existing cylinder, match five points: 50 mm bore, 8 mm stroke, PT1/4 port thread, basic (no bracket) mounting, and no magnet. This ensures an exact dimensional and performance direct for another AirTAC SC50 tie-rod unit.
Quick checklist
At 0.7 MPa (7 bar) operating pressure, the SC50X8 double-acting cylinder produces a theoretical push force of 1374 N. The pull force on the retract stroke at the same pressure is 825 N, accounting for the 20 mm rod area.
No. The SC50X8 is a double-acting air cylinder that relies on live air pressure to hold its position. If pressure is lost or the directional valve is centered, the piston can drift. For position holding without pressure, you must add an external rod brake or a pilot-operated check valve.
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