Airtac SC50 Standard Cylinder SC50X250CB
The AirTAC Airtac SC50 Standard Cylinder SC50X250CB is a genuine double-acting standard air cylinder with a Ø50mm bore and 250mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke250 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X250CB
The SC50X250CB is a double-acting pneumatic cylinder from the AirTAC SC tie-rod series, combining a 50 mm bore with a 250 mm stroke. At a standard operating pressure of 0.5 MPa, this actuator generates a push force of 982 N and a pull force of 825 N, making it a capable mid-range workhorse for linear motion tasks.
This model is configured with a CB rear double clevis mounting (fork/lug style, accessory F-SC50CB) that allows the cylinder to pivot during operation, accommodating angular misalignment in the application. The 20 mm diameter piston rod features an M16x1.5 male thread for tooling attachment, and the cylinder body has an overall length A of 150 mm, yielding a compact total extended length of approximately 400 mm.
Airtac SC50 Standard Cylinder SC50X250CB Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X250CB |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 250 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 SC50X250CB
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×250 | 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 SC50X250CB Is Used
Agricultural Equipment
The pivoting CB mount and 982 N force suit actuating chutes, gates, or levers on harvesters and planters, where the cylinder must follow an arc and withstand dusty conditions.
Conveyor Diverter Gates
Uses the rear clevis pivot to swing a diverter arm or gate on a packaging or sorting conveyor, directing products between lanes with a reliable 250 mm linear stroke.
Clamping & Welding Fixtures
Provides strong, controlled clamping force in a pivoting jig. The double clevis allows the cylinder body to self-align as the clamp arm closes, ensuring even pressure on the workpiece.
Is the Airtac SC50 Standard Cylinder SC50X250CB the Right Cylinder?
Select the SC50X250CB when your application requires a force around 982 N at 0.5 MPa and a pivoting rear mount. If your load demands more force, stepping up to the 63 mm bore (SC63 series) provides 1559 N at the same pressure; for a lighter, more compact solution, the 40 mm bore (SC40) delivers 628 N. The double clevis mount is ideal for applications where the cylinder must swing through an arc.
For this 250 mm stroke, ensure the rod is primarily loaded in compression or tension. If any side load is present, even a minor one, guide the load externally with a linear rail or rod guide to prevent bending stress on the 20 mm rod and premature bearing wear. To guarantee a correct replacement, match five key points: 50 mm bore, 250 mm stroke, PT port thread, CB rear double clevis mounting, and the standard non-magnetic piston.
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 SC50X250CB FAQ
At 0.7 MPa operating pressure, the theoretical push force is 1374 N, and the pull force (accounting for the 20 mm rod area) is 825 N. The maximum force at 0.9 MPa is 1767 N push. Always apply a safety factor for dynamic loads.
No. The AirTAC SC series is a tie-rod cylinder that is shorter in overall length than a comparable ISO 15552 cylinder. A direct dimensional replacement requires another AirTAC SC50 cylinder with a 250 mm stroke, PT ports, and a CB rear double clevis mount to ensure the pivot point and pin dimensions match.
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