Airtac SC50 Standard Cylinder SC50X120
The AirTAC Airtac SC50 Standard Cylinder SC50X120 is a genuine double-acting standard air cylinder with a Ø50mm bore and 120mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke120 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X120
The SC50X120 is a double-acting tie-rod cylinder delivering 982 N of push force when supplied with 0.5 MPa air pressure. Its 20 mm diameter piston rod and 21 mm adjustable air cushion provide reliable deceleration for mid-range pneumatic tasks, while the 150 mm body length keeps the overall envelope compact.
With a 120 mm stroke well within the 1200 mm maximum standard for the 50 mm bore, this cylinder is a stock-configuration workhorse. The PT1/4 port and M16x1.5 rod thread connect easily to standard pneumatic fittings and tooling, making it a straightforward choice for general factory automation.
Airtac SC50 Standard Cylinder SC50X120 Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X120 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 120 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 SC50X120
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×120 | 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 SC50X120 Is Used
Package Sorting Gates
Actuates diverter gates on medium-speed conveyor lines. The 982 N push force at 0.5 MPa easily shifts cartons and parcels, while the adjustable cushion softens the gate's end-of-stroke impact.
Clamping & Fixturing
Provides stable, repeatable clamping for CNC machining or welding fixtures. The 50 mm bore offers a strong hold without excessive bulk, and the tie-rod design allows easy maintenance in harsh environments.
Press & Assembly Tools
Powers light-duty assembly presses for bearing insertion or riveting. The 1767 N maximum push force at 0.9 MPa gives a useful reserve for jobs requiring a firm, controlled press fit.
Is the Airtac SC50 Standard Cylinder SC50X120 the Right Cylinder?
Choose the SC50X120 when your application needs roughly 1000 N of force. If you need more thrust, stepping up to the 63 mm bore provides 1559 N at the same 0.5 MPa pressure. For strokes of 300 mm or longer, evaluate side loads carefully—a long, unsupported 20 mm rod can bend under lateral force, so consider an external guide or a guided cylinder.
To replace an existing unit, match five points: 50 mm bore, 120 mm stroke, PT port thread, basic (no bracket) mounting, and no magnet. This ensures the new cylinder drops into the same space and plumbing without modification.
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 SC50X120 FAQ
At 0.5 MPa, push force is 982 N and 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, but operating above 1.0 MPa is not permitted.
No. The SC series is a tie-rod cylinder with a shorter body length than an ISO 15552 profile cylinder, so it is not dimensionally interchangeable. It directly replaces another AirTAC SC50 cylinder of the same stroke, port, and mounting configuration.
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