Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X120
The AirTAC Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X120 is a genuine double-acting standard air cylinder with a Ø250mm bore and 120mm stroke, PT1" air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ250 mm
- Stroke120 mm
- Port sizePT1"
- Acting typeDouble acting
- Rod threadM42×2
- CushionAdjustable, 40 mm
About the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X120
The SC250X120 is a heavy-duty double-acting tie-rod cylinder delivering 24544 N of push force at 0.5 MPa and up to 44178 N at the maximum operating pressure of 0.9 MPa. With a 250 mm bore and a 50 mm diameter piston rod, this model is built for large-scale industrial applications requiring substantial linear thrust over a 120 mm stroke.
This ISO 6430 class cylinder features a 40 mm adjustable air cushion at each end to decelerate high-inertia loads smoothly. The body length A is 294 mm, and the rod features an M42x2 male thread with PT1" ports as standard. Operating on filtered air from 0.15 to 1.0 MPa, the standard TPU seals provide a temperature range of -20 to +70 °C.
Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X120 Technical Specifications
| Model | Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X120 |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Stroke | 120 mm |
| Acting type | Double acting |
| Port size | PT1" |
| Rod thread | M42×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max stroke | Up to 1500 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 (Ø250mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 24544 N | 23562 N |
| 0.7 MPa | 34361 N | — |
| Max (approx.) | 5006 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X120
| SC | Standard tie-rod cylinder series. |
|---|---|
| 250 | Bore size in mm. |
| ×120 | 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 SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X120 Is Used
Sawmill Log Handling
Provides the high force needed to clamp and position large logs on carriages and infeeds, withstanding dusty, demanding environments.
Heavy-Duty Agricultural Presses
Powers baling and compacting machinery, delivering consistent thrust for dense material compression in stationary farm equipment.
Marine Hatch Actuation
Operates heavy watertight doors and cargo hatches, where robust construction and high force output are critical for safety and reliability.
Is the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X120 the Right Cylinder?
Select the SC250X120 when your application demands a push force around 24544 N at standard plant pressure. If your load requires less force, stepping down to the SC200 bore reduces the push force to 15708 N at 0.5 MPa, potentially saving space and air consumption. For strokes of 300 mm or longer, evaluate side-load conditions carefully; an external guide or guided cylinder is recommended to protect the 50 mm rod and rod bearing from bending moments.
To ensure a direct replacement, match five key points: the 250 mm bore, the 120 mm stroke, the PT1" port thread, the basic (no bracket) mounting configuration, and the absence of a built-in magnet. This cylinder is a tie-rod design and is not dimensionally interchangeable with ISO 15552 profile 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 SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X120 FAQ
At 0.5 MPa, the push force is 24544 N and the pull force is 23562 N. At the maximum operating pressure of 0.9 MPa, the push force increases to 44178 N. The theoretical maximum force at 1.0 MPa is 5006 kgf.
No, the SC250X120 is a double-acting cylinder and will not hold its position if air pressure is lost or the directional valve is centered. The piston can drift or the load can drop. For load holding without live pressure, you must add an external rod brake, a mechanical lock, or a pilot-operated check valve in the circuit.
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