The AirTAC SC50 Standard Cylinder SC50X690 is a genuine double-acting standard air cylinder with a Ø50mm bore and 690mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC50X690 is a double-acting pneumatic cylinder with a 50 mm bore and an extended 690 mm stroke, built for applications requiring a long linear reach. At 0.5 MPa it provides 982 N of push force and 825 N of pull force, rising to 1767 N push at the maximum operating pressure of 0.9 MPa.
This model is a non-standard stroke length, exceeding the standard 1200 mm maximum for the 50 mm bore, and is made to order. It features a 20 mm diameter piston rod with M16x1.5 male threads, PT1/4 port connections, and a 21 mm adjustable air cushion at each end to decelerate the load smoothly. The body length A is 150 mm, giving a total extended length of approximately 840 mm.
| Model | Airtac SC50 Standard Cylinder SC50X690 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 690 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. |
| ×690 | 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 across a 690 mm span between conveyor lines or workstations, using the 982 N push force to slide a tooling plate reliably at standard plant pressure.
Applies up to 1767 N of clamping force at 0.9 MPa to hold large panels or doors during gluing or assembly, with the adjustable cushion preventing bounce at the end of the long stroke.
Extends to tilt heavy bins or hoppers for material discharge, where the 825 N pull force retracts the mechanism and the long stroke provides the necessary tipping angle.
Choose the SC50 bore when your application needs between 982 N and 1767 N of push force. If your load requires more force, stepping up to the 63 mm bore provides 1559 N at 0.5 MPa. For a lighter, more compact solution, the 40 mm bore delivers 628 N at the same pressure. For any stroke over 300 mm, especially this 690 mm length, you must manage side loads carefully. The 20 mm rod is strong in compression and tension but will bend if subjected to lateral forces at full extension; use an external linear guide or rod support to protect the rod bearing and seals. When replacing this cylinder, match five points: 50 mm bore, 690 mm stroke, PT port thread, basic mounting (no bracket), and the standard TPU seal.
Quick checklist
At the standard operating pressure of 0.5 MPa, the push force is 982 N and the pull force is 825 N. At the maximum operating pressure of 0.9 MPa, the push force increases to 1767 N.
No, 690 mm is a non-standard stroke for the 50 mm bore and is made to order. With a long stroke like this, never subject the rod to direct side loads at full extension. Always guide the tooling externally with rails or shafts to prevent bending moments on the 20 mm rod and internal bearing.
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