Airtac SC50 Standard Cylinder SC50X20STC
The AirTAC Airtac SC50 Standard Cylinder SC50X20STC 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 SC50X20STC
The AirTAC SC50X20STC is a double-acting tie-rod cylinder delivering 982 N of push force at 0.5 MPa (1767 N at the 0.9 MPa maximum operating pressure). With a compact 20 mm stroke and a 20 mm diameter piston rod, this model is built for short, repetitive linear movements where space is tight.
This specific configuration includes a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors, and a centre trunnion mount (TC) supplied with the TCM1 bracket (F-SC50TC). The trunnion pivot allows the cylinder body to swing, accommodating angular motion in the driven load. The body length A is 150 mm, and the standard PT1/4 port keeps plumbing straightforward.
Airtac SC50 Standard Cylinder SC50X20STC Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X20STC |
|---|---|
| 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 SC50X20STC
| 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 SC50X20STC Is Used
Part Diverter Gate
The 20 mm stroke and trunnion mount allow the cylinder to pivot a small diverter gate on a conveyor line, sorting packages by size or destination. The built-in magnet confirms gate position with a reed sensor.
Clamping Fixture
Delivers a controlled 982 N clamping force for holding small components during assembly or machining. The short stroke provides fast cycle times, while the trunnion mount absorbs minor fixture misalignment.
Valve Actuation
Operates a quarter-turn ball or butterfly valve with a short, precise linear-to-rotary linkage. The centre trunnion simplifies mounting on the valve yoke, and the magnetic piston enables open/closed position feedback.
Is the Airtac SC50 Standard Cylinder SC50X20STC the Right Cylinder?
Choose the SC50X20STC when your application needs a short 20 mm stroke with a 982 N push force at standard plant pressure. If you need more force, step up to the 63 mm bore (1559 N at 0.5 MPa); for a lighter, more compact solution, the 40 mm bore provides 628 N. The centre trunnion mount is ideal for pivoting applications—ensure the pivot axis is aligned with the cylinder's centre of gravity to minimise side loading.
For a direct replacement, match these five points: 50 mm bore, 20 mm stroke, PT1/4 port thread, centre trunnion (TC) mounting with TCM1 bracket, and the built-in magnet (-S) for sensor compatibility. This model is not dimensionally interchangeable with ISO 15552 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 SC50X20STC FAQ
At 0.5 MPa (5 bar) the cylinder pushes with 982 N and pulls with 825 N. 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.
Yes. The -S suffix means this cylinder has a built-in magnet on the piston. You can clamp AirTAC CMSG (reed) or DMSG/EMSG (solid-state) sensors directly onto the barrel groove to detect piston position without any additional brackets.
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