Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X450H
The AirTAC Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X450H is a genuine double-acting standard air cylinder with a Ø250mm bore and 450mm stroke, PT1" air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ250 mm
- Stroke450 mm
- Port sizePT1"
- Acting typeDouble acting
- Rod threadM42×2
- CushionAdjustable, 40 mm
About the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X450H
The SC250X450H is a heavy-duty double-acting tie-rod cylinder delivering 24544 N of push force at 0.5 MPa (44178 N at the 0.9 MPa maximum operating pressure). Its 50 mm diameter piston rod and 40 mm adjustable air cushion at each end provide robust deceleration for the 450 mm stroke.
Equipped with Viton (FKM) seals, this model operates reliably in ambient temperatures from 0 to +150 °C, making it suitable for high-heat industrial environments. The body length A is 294 mm, resulting in a total extended length of 744 mm. Ports are PT1" with an M42x2 rod thread.
Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X450H Technical Specifications
| Model | Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X450H |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Stroke | 450 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 SC250X450H
| SC | Standard tie-rod cylinder series. |
|---|---|
| 250 | Bore size in mm. |
| ×450 | 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 SC250X450H Is Used
High-Temperature Foundry Actuation
Operates mold clamps and core pullers in foundries where ambient heat demands Viton seals rated to 150 °C.
Heavy Press Tooling
Provides the 24544 N force at 0.5 MPa for forming, stamping, or laminating presses in continuous thermal cycling.
Petrochemical Valve Automation
Drives large quarter-turn or gate valves in refineries, handling aggressive media with FKM seal compatibility.
Is the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X450H the Right Cylinder?
For higher force at the same pressure, step up to a larger bore if available; for a lighter, faster-cycling unit, consider the 200 mm bore SC200 series which provides 15708 N at 0.5 MPa. This ISO 6430 class cylinder has a maximum standard stroke of 1500 mm. When replacing, match bore, 450 mm stroke, PT1" ports, basic mount, and the -H Viton seal suffix exactly. For strokes over 300 mm, ensure the 50 mm rod is externally guided if side loads are present to prevent bending and premature bearing wear.
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 SC250X450H FAQ
At 0.7 MPa operating pressure, this 250 mm bore cylinder generates 34361 N of push force and 23562 N of pull force on the retract stroke.
No. Like all standard double-acting pneumatic cylinders, the SC250X450H will drift or drop its load if pressure is exhausted or the valve centers. Use an external rod lock or pilot-operated check valve if position holding is required.
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