Airtac SC50 Standard Cylinder SC50X125N
The AirTAC Airtac SC50 Standard Cylinder SC50X125N 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 SC50X125N
The SC50X125N is a double-acting pneumatic cylinder from the AirTAC SC tie-rod series, delivering a push force of 982 N at 0.5 MPa (up to 1767 N at 0.9 MPa). With a 125 mm stroke and a 20 mm diameter piston rod, it suits medium-force linear actuation tasks where a compact footprint is required.
This model is configured with NBR (nitrile) seals and standard PT ports. The adjustable air cushion at each end decelerates the piston smoothly, reducing end-of-stroke impact. The body length A is 150 mm, making the total extended length approximately 275 mm.
Airtac SC50 Standard Cylinder SC50X125N Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X125N |
|---|---|
| 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 SC50X125N
| 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 SC50X125N Is Used
Material Handling Gates
Operates diverter gates or stops on light to medium-duty conveyor lines, using the 125 mm stroke for reliable part sorting.
Clamping & Fixturing
Provides consistent clamping force for jigs and fixtures in machining or assembly cells, with NBR seals for standard shop air.
Agricultural Machinery
Actuates levers or linkages on planting and harvesting equipment, benefiting from the tie-rod construction's serviceability.
Is the Airtac SC50 Standard Cylinder SC50X125N the Right Cylinder?
For applications needing more force, stepping up to the 63 mm bore SC63 series provides 1559 N push at 0.5 MPa. If space is constrained and less force is acceptable, the 40 mm bore SC40 series offers 628 N. This 125 mm stroke is well within the 1200 mm maximum standard stroke for the 50 mm bore.
When replacing this cylinder, match five points: 50 mm bore, 125 mm stroke, PT port thread, NBR seal material, and the basic mounting configuration. The SC50 is a tie-rod design and is not dimensionally interchangeable with ISO 15552 profile cylinders.
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 SC50X125N FAQ
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 reaches 1767 N.
No. The SC50X125N is a double-acting cylinder and will not hold its position if air pressure is lost or the directional valve is centered. For load holding, an external rod brake, pilot-operated check valve, or mechanical lock is required.
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