Airtac SC50 Standard Cylinder SC50X20FB
The AirTAC Airtac SC50 Standard Cylinder SC50X20FB 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 SC50X20FB
The SC50X20FB is a compact-stroke 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). Its 20 mm stroke is ideal for short-throw clamping, ejecting, or positioning tasks where space is tight and cycle speed is critical.
This model is factory-configured with an FB rear rectangular flange (accessory F-SC50FB) for rigid end-face mounting. The 50 mm bore uses a 20 mm diameter piston rod with M16x1.5 male threads and PT1/4 ports, and includes an adjustable air cushion (21 mm long) to soften end-of-stroke impact.
Airtac SC50 Standard Cylinder SC50X20FB Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X20FB |
|---|---|
| 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 SC50X20FB
| 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 SC50X20FB Is Used
Short-Stroke Clamping
The 20 mm stroke and 982 N force at 0.5 MPa make this cylinder perfect for pneumatic clamping fixtures in CNC machining or welding jigs, where a quick, firm grip is needed without a long travel.
Part Ejection
Ideal for ejecting small parts from a conveyor or press die. The rear flange mount allows the cylinder to be bolted directly to a bulkhead, pushing a striker plate through a short, fast 20 mm motion.
Pneumatic Press Tool
With 1767 N of force available at 0.9 MPa, this compact cylinder can serve as the actuator in a small benchtop pneumatic press for staking, crimping, or light assembly operations.
Is the Airtac SC50 Standard Cylinder SC50X20FB the Right Cylinder?
Choose the SC50 bore when your application needs roughly 1000 N of push force at standard plant air. If you need less force in the same package size, the SC40 bore provides 628 N at 0.5 MPa. For higher force, step up to the SC63 which delivers 1559 N at the same pressure.
For reliable replacement, match five points: 50 mm bore, 20 mm stroke, PT1/4 port thread, FB rear flange mounting, and the standard TPU seal. The FB flange bolts directly to a machine frame or end plate, keeping the cylinder body cantilevered. Ensure the mounting surface is flat and rigid to prevent tie-rod stress.
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 SC50X20FB 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, the push force reaches 1767 N. The theoretical maximum at 1.0 MPa is 200 kgf.
This model comes with the FB rear flange. For front-face mounting, order the FA front flange variant (SC50X20FA). The mounting accessory is part of the ordering code and must be specified at purchase; the flange is not intended to be swapped in the field.
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