Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X900H
The AirTAC Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X900H is a genuine double-acting standard air cylinder with a Ø250mm bore and 900mm stroke, PT1" air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ250 mm
- Stroke900 mm
- Port sizePT1"
- Acting typeDouble acting
- Rod threadM42×2
- CushionAdjustable, 40 mm
About the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X900H
The SC250X900H is a heavy-duty double-acting pneumatic cylinder from the AirTAC SC tie-rod series, delivering a substantial push force of 24544 N 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 900 mm stroke, this model features a robust 50 mm diameter piston rod and PT1" port threads, making it suitable for demanding industrial linear motion tasks.
This high-temperature variant is equipped with Viton (FKM) seals, designated by the 'H' suffix, extending its operating temperature range to 0–150°C. The cylinder includes an adjustable air cushion (40 mm length) at both ends to decelerate the piston smoothly, reducing end-of-stroke impact. Its body length A is 294 mm, resulting in a total extended length of approximately 1194 mm.
Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X900H Technical Specifications
| Model | Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X900H |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Stroke | 900 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 SC250X900H
| SC | Standard tie-rod cylinder series. |
|---|---|
| 250 | Bore size in mm. |
| ×900 | 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 SC250X900H Is Used
High-Temperature Foundry Gate
The Viton seals allow this cylinder to reliably operate a heavy foundry gate or damper in ambient temperatures up to 150°C, where standard seals would fail.
Large-Scale Waste Compactor
Provides the 24544 N force at 0.5 MPa needed to drive the compaction plate in a large industrial waste or recycling compactor, handling high-cycle demands.
Heavy-Duty Press Clamp
Delivers up to 44178 N of clamping force at 0.9 MPa for securely holding large workpieces during high-temperature welding or machining processes.
Is the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X900H the Right Cylinder?
Select the SC250X900H for applications requiring high thrust in high-temperature environments. If your force requirement is lower, consider stepping down to the SC200 bore, which provides 15708 N of push force at 0.5 MPa. For strokes of 900 mm, ensure the load is guided externally to prevent excessive side-load bending moments on the 50 mm rod, which can damage the rod bearing and seals. A guided cylinder or external linear guide is strongly recommended.
For a direct replacement, match these five points: a 250 mm bore, 900 mm stroke, PT1" port thread, the Viton (H) seal material for high-temperature compatibility, and the basic mounting configuration (no integrated bracket). This ensures a drop-in fit for another AirTAC SC tie-rod cylinder.
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 SC250X900H FAQ
At 0.7 MPa operating pressure, the push force is 34361 N, and the pull force on the retract stroke is 23562 N. The maximum theoretical force at 1.0 MPa is 5006 kgf.
No, the SC250X900H is a double-acting cylinder and will not hold its position if air pressure is lost or the valve is centered. The piston will drift. To hold a load safely without live pressure, you must add an external rod lock, brake, or a pilot-operated check valve.
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