The AirTAC SC50 Standard Cylinder SC50X690S 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 SC50X690S is a double-acting tie-rod cylinder with a 50 mm bore and a 690 mm stroke, pre-fitted with a built-in magnet for direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors. At 0.5 MPa air pressure it produces 982 N of push force and 825 N on the pull stroke, stepping up to 1767 N push at the maximum operating pressure of 0.9 MPa.
This model uses a 20 mm diameter piston rod with an M16x1.5 rod-end thread and PT1/4 port connections. The adjustable air cushion at each end is 21 mm long, helping to decelerate the piston smoothly. The total body length A is 150 mm, giving an extended length of approximately 840 mm. The standard TPU/NBR seals suit ambient temperatures from -20 to +70 °C.
| Model | Airtac SC50 Standard Cylinder SC50X690S |
|---|---|
| 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.
The 690 mm stroke and 982 N push force at 0.5 MPa make this cylinder ideal for raising and lowering material stops or gate mechanisms on conveyor lines. The built-in magnet allows easy end-of-stroke sensing with CMSG sensors.
With 1767 N of clamping force available at 0.9 MPa, the SC50X690S can securely hold workpieces in CNC or welding jigs. The long stroke retracts the clamp fully clear for fast part loading and unloading.
Delivering a controlled 690 mm linear motion, this cylinder suits bin-tipping stations in sortation systems. The adjustable cushioning softens the end-of-stroke impact, protecting the bin and its contents.
The SC50 bore sits between the smaller SC40 (628 N push at 0.5 MPa) and the larger SC63 (1559 N push at 0.5 MPa). If your load is consistently above 800 N, stepping up to the SC63 provides a comfortable margin and a thicker 20 mm rod. For this 690 mm stroke, the rod is long enough that side loads must be avoided; use an external linear guide or a guided cylinder if the load is not perfectly axial, otherwise the rod bearing will experience accelerated wear.
When replacing an existing cylinder, match five points: 50 mm bore, 690 mm stroke, PT1/4 port thread, the built-in magnet (-S suffix), and the basic (no bracket) mounting. This cylinder is shorter than an ISO 15552 profile and is not dimensionally interchangeable with that standard.
Quick checklist
At 0.5 MPa (5 bar), 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 rises to 1767 N. The theoretical maximum force at 1.0 MPa is 200 kgf (1961 N) push.
Yes. The -S suffix in SC50X690S indicates a built-in magnet inside the piston. This lets you clamp CMSG (reed) or DMSG/EMSG (solid-state) sensors directly onto the barrel to detect piston position without any external brackets or flags.
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