The AirTAC SC50 Standard Cylinder SC50X665S is a genuine double-acting standard air cylinder with a Ø50mm bore and 665mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC50X665S 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 20 mm diameter piston rod and a 665 mm stroke, this non-standard extended-length model is built for applications requiring a long linear reach from a compact 50 mm bore envelope.
This model includes a factory-installed -S magnet, enabling direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the barrel for precise, non-contact position feedback. The adjustable pneumatic cushion at each end decelerates the piston over 21 mm to absorb energy and reduce end-cap impact, extending service life in high-cycle automation tasks.
| Model | Airtac SC50 Standard Cylinder SC50X665S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 665 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. |
| ×665 | 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 665 mm stroke pushes or pulls parts across wide conveyor gaps or between parallel lines, with the built-in magnet confirming end-of-travel to the PLC.
Clamps and positions large weldments with 1767 N of force at 0.9 MPa. Sensor feedback ensures the clamp is fully engaged before the welding cycle starts.
Ejects full layers of boxes onto a pallet. The adjustable cushion manages the inertial load of the long stroke, preventing bounce and product damage.
For applications needing higher force, stepping up to the 63 mm bore provides 1559 N of push at 0.5 MPa, while the 40 mm bore offers a more compact option at 628 N. This 665 mm stroke exceeds the 1200 mm maximum standard stroke for the 50 mm bore, classifying it as a made-to-order non-standard length. When using a stroke of this length, external guides or a guided cylinder are strongly recommended to protect the 20 mm rod from bending under side loads or high acceleration.
To ensure a direct replacement, match five key specifications: the 50 mm bore, the exact 665 mm stroke, the PT1/4 port thread, the basic mounting configuration (no pre-attached brackets), and the -S magnet for sensor compatibility. This cylinder is not dimensionally interchangeable with ISO 15552 profiles; it is a dedicated tie-rod design.
Quick checklist
At the standard operating pressure of 0.7 MPa, the push force is 1374 N and the pull force is 1155 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 1767 N. The theoretical maximum at 1.0 MPa is 200 kgf.
No. A 665 mm stroke with a 20 mm rod is highly susceptible to bending and premature bearing wear under side loads. You must use an external guide rail system or a guided cylinder assembly to absorb transverse forces and protect the rod and seals.
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