Airtac SC50 Standard Cylinder SC50X125SH
The AirTAC Airtac SC50 Standard Cylinder SC50X125SH is a genuine double-acting standard air cylinder with a Ø50mm bore and 125mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke125 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X125SH
The AirTAC SC50X125SH 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 M16x1.5 rod thread, it provides a robust linear stroke of 125 mm, well within the 1200 mm maximum standard stroke for this 50 mm bore family.
This specific model is factory-equipped with a built-in magnet (-S suffix) for direct mounting of CMSG/DMSG/EMSG sensors, and Viton (FKM) seals (-H suffix) that shift the operating temperature range to 0 to +150°C, making it suitable for hot or aggressive environments where standard TPU seals would degrade. The 21 mm adjustable air cushion at each end decelerates the piston smoothly, reducing end-of-stroke impact.
Airtac SC50 Standard Cylinder SC50X125SH Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X125SH |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 125 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.
Theoretical Output Force (Ø50mm)
| 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.
Model Code: Airtac SC50 Standard Cylinder SC50X125SH
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×125 | 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.
Where the Airtac SC50 Standard Cylinder SC50X125SH Is Used
High-Temperature Actuation
With Viton seals rated for 0 to +150°C, this cylinder reliably operates in autoclaves, drying ovens, and near heat-sealing bars where standard cylinders would fail.
Sensor-Controlled Clamping
The built-in magnet allows CMSG/DMSG sensors to confirm full extension and retraction, enabling precise sequence control in automated clamping and pressing fixtures.
Hot-Material Sorting Gate
Delivers a 125 mm linear stroke to divert hot parts on a conveyor line, combining the 982 N push force with the thermal resilience of FKM seals.
Is the Airtac SC50 Standard Cylinder SC50X125SH the Right Cylinder?
Choose the SC50X125SH when your application requires a 125 mm stroke with a force output around 982 N at standard plant air pressure. If you need higher 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 offers 628 N. Always match the replacement cylinder on all five key points: 50 mm bore, 125 mm stroke, PT port thread, the built-in magnet for sensor compatibility, and the high-temperature Viton seal material.
For this 125 mm stroke, side-load forces are typically manageable, but avoid direct radial loads on the rod. If your application involves any off-axis force, use an external guide rail or a guided cylinder to protect the rod bearing and ensure long seal life.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SC50 Standard Cylinder SC50X125SH FAQ
At 0.5 MPa, the cylinder provides 982 N of push force and 825 N of pull force. 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.
No, a standard SC50 uses TPU seals rated for -20 to +70°C and will degrade rapidly in a high-temperature environment. You must replace it with an SC50 model carrying the -H suffix for Viton seals, which are rated for continuous operation from 0 to +150°C.
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