Airtac SC50 Standard Cylinder SC50X25SFB
The AirTAC Airtac SC50 Standard Cylinder SC50X25SFB is a genuine double-acting standard air cylinder with a Ø50mm bore and 25mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke25 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X25SFB
The SC50X25SFB is a double-acting pneumatic cylinder delivering 982 N of push force at 0.5 MPa (1374 N at 0.7 MPa). Its 25 mm stroke suits short clamping, ejecting, and positioning tasks where space is tight. The 20 mm diameter piston rod and PT1/4 ports provide a robust fluid path for rapid cycling.
This configuration includes a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors, enabling precise end-of-stroke detection without external brackets. The rear rectangular flange (FB, part F-SC50FB) allows secure panel mounting from the cap end, ideal for fixed linear push applications.
Airtac SC50 Standard Cylinder SC50X25SFB Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X25SFB |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 25 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 SC50X25SFB
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×25 | 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 SC50X25SFB Is Used
Short-Stroke Clamping
The 25 mm stroke and 982 N force at 0.5 MPa make this cylinder ideal for workpiece clamping in CNC jigs and welding fixtures, where a quick, powerful, and short linear action is required.
Part Ejection
Use the SC50X25SFB to eject parts from a conveyor or stamping die. The rear flange mount provides a rigid base, and the magnetic piston allows sensors to confirm each ejection cycle.
Actuator Interlock
Deploy this cylinder as a mechanical interlock or gate pin. The built-in magnet enables electronic verification of the pin's position, enhancing safety in automated machinery sequences.
Is the Airtac SC50 Standard Cylinder SC50X25SFB the Right Cylinder?
Choose the SC50 bore when your application needs roughly 1000 N of force at standard plant air. If you need more force, step up to the SC63 (1559 N at 0.5 MPa); for a lighter, more compact solution, the SC40 provides 628 N. This 25 mm stroke is a standard length, well within the 1200 mm maximum for the 50 bore.
For replacement, match five key points: 50 mm bore, 25 mm stroke, PT1/4 port thread, rear flange FB mounting, and the built-in magnet for sensor compatibility. This ensures a drop-in fit for existing AirTAC SC tie-rod installations.
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 SC50X25SFB FAQ
At the standard operating pressure of 0.5 MPa, the push force is 982 N. At 0.7 MPa, it increases to 1374 N, and the maximum theoretical force at 1.0 MPa is 2000 N (200 kgf). The pull force at 0.5 MPa is 825 N.
It is a direct replacement only for an AirTAC SC series tie-rod cylinder of the same configuration. The SC is shorter than an ISO 15552 cylinder, so it is not dimensionally interchangeable with ISO 15552 profile types. Verify the body length (A=150 mm), mounting hole pattern for the FB flange, and PT1/4 port thread.
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