Airtac SC50 Standard Cylinder SC50X300SFB
The AirTAC Airtac SC50 Standard Cylinder SC50X300SFB is a genuine double-acting standard air cylinder with a Ø50mm bore and 300mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke300 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X300SFB
The SC50X300SFB is a double-acting pneumatic cylinder delivering 982 N of push force at 0.5 MPa and up to 1767 N at the maximum operating pressure of 0.9 MPa. With a 50 mm bore, 20 mm piston rod, and a 300 mm stroke, this model is well-suited for medium-force clamping, pressing, and material transfer tasks. The built-in magnet allows direct mounting of CMSG/DMSG/EMSG sensors for reliable end-of-stroke detection.
This configuration includes an FB rear rectangular flange (F-SC50FB) for secure end-face mounting against a machine panel. The cylinder body length A is 150 mm, giving a total extended length of 450 mm. It operates on filtered air from 0.15 to 1.0 MPa and features an adjustable pneumatic cushion to decelerate the piston smoothly, reducing impact noise and wear at the end of each stroke.
Airtac SC50 Standard Cylinder SC50X300SFB Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X300SFB |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 300 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 SC50X300SFB
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×300 | 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 SC50X300SFB Is Used
Automated Fixture Clamping
The 1767 N maximum force at 0.9 MPa provides strong, consistent clamping for CNC machining fixtures and welding jigs. The rear flange mount ensures a rigid, fixed installation.
Packaging Line Pusher
With a 300 mm stroke and magnetic piston, this cylinder is ideal for diverting cartons on a conveyor. Sensors confirm full extension and retraction for high-speed sortation logic.
Press-Fit Assembly Station
Use the SC50X300SFB for pressing bearings or bushings into housings. The adjustable cushion prevents impact damage to delicate components at the end of the press stroke.
Is the Airtac SC50 Standard Cylinder SC50X300SFB the Right Cylinder?
For applications needing more force, stepping up to the 63 mm bore SC63 series provides 1559 N of push force at 0.5 MPa. If a lighter, more compact solution is acceptable, the 40 mm bore SC40 series offers 628 N at the same pressure. This 300 mm stroke model has a rod extension that can be susceptible to side-load bending; ensure the load is guided externally or consider a guided cylinder if side forces are present.
To replace an existing cylinder, match five key points: 50 mm bore, 300 mm stroke, PT port thread, FB rear flange mounting (F-SC50FB), and the built-in magnet (-S suffix). The SC is a tie-rod cylinder and is dimensionally shorter than an ISO 15552 profile cylinder, so it is not a direct drop-in replacement for that standard.
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 SC50X300SFB FAQ
At the standard 0.7 MPa operating pressure, the push force is 1374 N and the pull force is 825 N. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 200 kgf.
No. As a standard double-acting cylinder, the SC50X300SFB will drift or drop its load if air pressure is exhausted or the directional valve is centered. For load holding without live pressure, you must add an external rod lock, brake, or a pilot-operated check valve.
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