Airtac SC50 Standard Cylinder SC50X20
The AirTAC Airtac SC50 Standard Cylinder SC50X20 is a genuine double-acting standard air cylinder with a Ø50mm bore and 20mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke20 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X20
The SC50X20 is a compact-stroke double-acting pneumatic cylinder from the AirTAC SC tie-rod series, delivering 982 N of push force at 0.5 MPa and up to 1767 N at the 0.9 MPa maximum operating pressure. Its 20 mm stroke suits short linear positioning, clamping, and eject tasks where space is tight and cycle speed matters.
Built with a 50 mm bore, 20 mm diameter piston rod with M16x1.5 male threads, and PT1/4 ports, this cylinder includes a 21 mm adjustable air cushion at each end to decelerate the piston quietly. The body length A is 150 mm, giving a compact total extended length of approximately 170 mm for easy integration into fixtures and small automation cells.
Airtac SC50 Standard Cylinder SC50X20 Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X20 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 20 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 SC50X20
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×20 | 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 SC50X20 Is Used
Short-Stroke Clamping
The 20 mm stroke and 982 N push force at 0.5 MPa make the SC50X20 ideal for pneumatic clamping fixtures in machining and assembly, where a firm, repeatable hold is needed without taking up much linear space.
Part Ejection & Sorting
Use the rapid 30-800 mm/s speed range to eject small parts from dies or sort components on a conveyor. The adjustable cushion softens the end-of-stroke impact, preserving tooling alignment.
Compact Pusher Stations
With a body length of just 150 mm, this cylinder fits into tight pusher stations on packaging or assembly conveyors, moving products a controlled 20 mm into the next process step.
Is the Airtac SC50 Standard Cylinder SC50X20 the Right Cylinder?
Choose the SC50 bore when your application needs roughly 1000 N of force at standard plant air; the smaller SC40 delivers 628 N at the same 0.5 MPa, while stepping up to an SC63 provides 1559 N. For this 20 mm stroke the rod is well supported inside the bearing, but if you later use strokes of 300 mm or longer on any SC50, add an external guide or linear rail to protect the rod and bearing from side loads.
To replace an existing cylinder, match five points: 50 mm bore, 20 mm stroke, PT1/4 port thread, basic (no bracket) mounting, and no magnet. This model uses the default TPU seals and PT threads; if your original has a magnet or flange bracket, select the corresponding -S or mounting suffix variant.
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 SC50X20 FAQ
At 0.5 MPa the push force is 982 N; at 0.7 MPa it reaches 1374 N, and at the maximum operating pressure of 0.9 MPa it delivers 1767 N. The pull (retract) force at 0.5 MPa is 825 N due to the 20 mm rod area. Always size for the lowest expected pressure.
It will fit if your current cylinder is a tie-rod design with 50 mm bore, 20 mm stroke, PT1/4 ports, and basic (no bracket) mounting. The SC series has a shorter body than ISO 15552 cylinders, so check the 150 mm body length against your mounting space. If you need a magnet for sensors, order the SC50X20-S variant.
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