Airtac SC50 Standard Cylinder SC50X125
The AirTAC Airtac SC50 Standard Cylinder SC50X125 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 SC50X125
The SC50X125 is a double-acting pneumatic cylinder with a 50 mm bore and 125 mm stroke, delivering 982 N of push force when supplied with 0.5 MPa air pressure. Its 20 mm diameter piston rod and PT1/4 ports suit general industrial automation tasks that need a compact tie-rod actuator with adjustable air cushioning at both ends.
At the full 0.9 MPa operating pressure, this cylinder generates 1767 N of thrust, making it capable of pressing, clamping, and lifting moderate loads. The body length A is 150 mm, giving a total extended length of approximately 275 mm — a space-efficient footprint for machine builders integrating genuine AirTAC pneumatics.
Airtac SC50 Standard Cylinder SC50X125 Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X125 |
|---|---|
| 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 SC50X125
| 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 SC50X125 Is Used
Part Diverting & Sorting
The 982 N push force at 0.5 MPa reliably shifts packages or components on conveyor lines, while the 125 mm stroke provides enough travel for lane diverters and flipper gates.
Light Press-Fit Assembly
With 1767 N available at 0.9 MPa, the SC50X125 inserts bearings, bushings, or dowel pins in bench-top assembly fixtures where controlled force and adjustable cushioning protect delicate parts.
Clamping & Holding Fixtures
Double-acting control holds the rod in both directions under live pressure. Use this cylinder to power weld-shop clamps or woodworking jigs that require consistent 125 mm clamping travel.
Is the Airtac SC50 Standard Cylinder SC50X125 the Right Cylinder?
Choose the SC50X125 when your application needs roughly 1000 N of force at standard shop air. If you require more force, stepping up to the 63 mm bore (SC63 series) provides 1559 N at 0.5 MPa; for lighter, faster moves the 40 mm bore offers 628 N. Always match the replacement cylinder on all five key points: 50 mm bore, 125 mm stroke, PT1/4 port thread, basic mounting (no bracket), and no magnet.
For strokes of 300 mm and above, consider an external guide or a guided cylinder to protect the rod bearing from side loads. At 125 mm the rod is well supported, but any off-axis force should still be minimised through proper alignment.
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 SC50X125 FAQ
At 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, push force reaches 1767 N. The theoretical maximum at 1.0 MPa is 200 kgf.
The SC series is a tie-rod cylinder, not an ISO 15552 profile cylinder, so dimensional interchangeability is not guaranteed. It will directly replace another AirTAC SC50 cylinder of the same stroke, port thread, and mounting configuration. Always verify the body length A (150 mm) and rod thread (M16x1.5) against your existing setup.
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