The AirTAC SC50 Standard Cylinder SC50X640S is a genuine double-acting standard air cylinder with a Ø50mm bore and 640mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC50X640S is a double-acting tie-rod cylinder delivering 982 N of push force at 0.5 MPa and up to 1767 N at the maximum operating pressure of 0.9 MPa. With a 50 mm bore and a 20 mm diameter piston rod, this model is built for medium-duty linear tasks requiring a long, non-standard 640 mm stroke.
This variant includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the barrel for precise end-of-stroke or mid-position detection. The standard TPU seals provide a reliable operating temperature range of -20 to +70 °C, and the PT1/4 port threads are ready for straightforward pneumatic connections.
| Model | Airtac SC50 Standard Cylinder SC50X640S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 640 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. |
| ×640 | 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.
Moves components 640 mm across a packaging or assembly line. The built-in magnet enables sensor-based end-of-stroke confirmation for automated sequencing.
Extends a glue nozzle across a wide panel. The adjustable air cushion at both ends decelerates the load smoothly, preventing vibration at the 0.9 MPa thrust of 1767 N.
Provides a controlled 640 mm push to index large bins or pallets onto a discharge conveyor, with the magnetic piston signaling the control system when the cycle is complete.
Select the SC50 for applications needing up to 982 N of force at standard plant pressure. If your load requires more force, stepping up to the SC63 bore provides 1559 N at 0.5 MPa. For strokes of this length (640 mm), the 20 mm rod is susceptible to bending under side loads; always guide the load externally or use a guided cylinder if lateral forces are present. When replacing an existing cylinder, match five points: 50 mm bore, 640 mm stroke, PT1/4 port thread, the basic mounting configuration, and the presence of a magnetic piston (-S) for sensor compatibility.
Quick checklist
At 0.5 MPa, the cylinder pushes with 982 N and pulls with 825 N. At the maximum operating pressure of 0.9 MPa, the push force increases to 1767 N. The theoretical maximum force at 1.0 MPa is 200 kgf.
A 20 mm diameter rod with a 640 mm stroke is vulnerable to buckling and side-load deflection. You must guide the load with an external rail system or use a guided cylinder assembly. The adjustable air cushion only decelerates the piston at the stroke end; it does not support or guide the rod.
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