Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X400STC
The AirTAC Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X400STC is a genuine double-acting standard air cylinder with a Ø250mm bore and 400mm stroke, PT1" air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ250 mm
- Stroke400 mm
- Port sizePT1"
- Acting typeDouble acting
- Rod threadM42×2
- CushionAdjustable, 40 mm
About the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X400STC
The AirTAC SC250X400STC is a large-bore double-acting tie-rod cylinder delivering 24544 N of push force at 0.5 MPa and up to 44178 N at 0.9 MPa. With a 400 mm stroke and a 50 mm diameter piston rod, this model is built for heavy industrial linear actuation where substantial thrust is required.
This configuration includes a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors and a centre trunnion mount (TC) with the TCM1 bracket, allowing the cylinder to pivot during operation. The adjustable air cushion (40 mm) decelerates the high-inertia load smoothly at end-of-stroke, protecting the end cap and reducing noise.
Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X400STC Technical Specifications
| Model | Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X400STC |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Stroke | 400 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 SC250X400STC
| SC | Standard tie-rod cylinder series. |
|---|---|
| 250 | Bore size in mm. |
| ×400 | 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 SC250X400STC Is Used
Heavy Press & Forming
Provides up to 44178 N of force for pressing, stamping, or forming operations in metal fabrication and heavy manufacturing cells.
Large Valve Actuation
Operates high-torque butterfly or gate valves in water treatment and process plants, with the trunnion mount absorbing the pivoting arc of the actuator linkage.
Material Handling Lift
Powers tilt or lift mechanisms on heavy-duty conveyor systems and dumper frames, where the centre trunnion allows the cylinder body to swing freely.
Is the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X400STC the Right Cylinder?
Select the SC250 when your application demands forces in the 24 kN range at standard plant pressure. If your load requires less force, stepping down to the SC200 bore reduces push force to 15708 N at 0.5 MPa, potentially saving space and air consumption. For strokes of 300 mm or more, especially with the 50 mm rod, ensure the load is guided externally to prevent rod bending and premature bearing wear; side loading on an unsupported rod will drastically shorten seal life.
To replace an existing cylinder, match five points exactly: 250 mm bore, 400 mm stroke, PT port thread, centre trunnion (TC) mounting with F-SC250TC bracket, and the built-in magnet (-S) for sensor compatibility. This is a tie-rod cylinder, not an ISO 15552 profile, so dimensional interchangeability is limited to other AirTAC SC250 tie-rod units.
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 SC250X400STC 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 reaches 44178 N. The theoretical maximum at 1.0 MPa is 5006 kgf.
No. The SC250 is a standard double-acting cylinder and will not hold position if pressure is exhausted or the directional valve is centered. The piston can drift or drop under load. For load holding, you must add a pilot-operated check valve or an external mechanical rod lock.
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