The AirTAC SC50 Standard Cylinder SC50X85H is a genuine double-acting standard air cylinder with a Ø50mm bore and 85mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC50X85H is a double-acting pneumatic cylinder with a 50 mm bore and 85 mm stroke, delivering a push force of 982 N at 0.5 MPa and up to 1767 N at the maximum operating pressure of 0.9 MPa. Its 20 mm diameter piston rod and M16x1.5 rod thread provide robust linear actuation for medium-duty tasks, while the 21 mm adjustable air cushion at each end decelerates the piston smoothly to reduce end-of-stroke impact.
This model is equipped with Viton (FKM) seals, designated by the 'H' suffix, which shifts the operating temperature range to 0–150 °C—making it suitable for hot environments where standard TPU seals would degrade. The body length A is 150 mm, giving a total extended length of approximately 235 mm, and it uses PT1/4 ports as standard.
| Model | Airtac SC50 Standard Cylinder SC50X85H |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 85 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. |
| ×85 | 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.
Viton seals allow reliable actuation in heated platen presses, thermoforming machines, and rubber molding equipment where ambient temperatures exceed 70°C.
With 982 N of push force at 0.5 MPa, this cylinder efficiently shifts pallets, indexes conveyors, and positions components on assembly lines.
The 85 mm stroke and 20 mm rod provide stable, repeatable clamping force for welding jigs, test fixtures, and CNC workholding in hot manufacturing cells.
For applications needing more force, stepping up to the 63 mm bore SC63 series provides 1559 N at 0.5 MPa. If space is tight and the load is lighter, the 40 mm bore SC40 offers 628 N at the same pressure. When replacing an existing unit, match five key points: 50 mm bore, 85 mm stroke, PT port thread, basic (no mounting accessory), and confirm the seal material—this 'H' variant uses Viton for high-temperature compatibility.
At 85 mm stroke, the rod is well-supported within the standard stroke range and does not typically require external guides for axial loads. However, always avoid side loading the rod directly; if lateral forces are present in the application, use an external guide rail or switch to a guided cylinder configuration.
Quick checklist
At 0.5 MPa the push force is 982 N and the pull force is 825 N. At 0.7 MPa push force reaches 1374 N, and at the maximum operating pressure of 0.9 MPa it delivers 1767 N. The theoretical maximum at 1.0 MPa is 200 kgf.
No. The SC series is a double-acting cylinder that requires continuous air pressure to maintain position. If pressure is exhausted or the directional valve is centered, the piston will drift. For load holding without live pressure, add a pilot-operated check valve or an external mechanical rod lock.
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