Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X400H
The AirTAC Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X400H 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 SC250X400H
The AirTAC SC250X400H is a large-bore double-acting tie-rod cylinder engineered for high-temperature service with its Viton (FKM) seal package, extending the operating range to 0–150 °C. With a 250 mm bore and 400 mm stroke, this cylinder generates a substantial 24544 N of push force and 23562 N of pull force at 0.5 MPa, rising to 44178 N at the maximum operating pressure of 0.9 MPa.
This model features a 50 mm diameter piston rod with an M42x2 knuckle thread and a PT1 inch port for high flow. The adjustable air cushion at each end is 40 mm long, providing smooth deceleration for heavy loads. The total body length A is 294 mm, giving an approximate extended length of 694 mm. As a genuine AirTAC SC series cylinder, it is ideal for demanding industrial applications where heat resistance and high force are critical.
Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X400H Technical Specifications
| Model | Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X400H |
|---|---|
| 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 SC250X400H
| 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 SC250X400H Is Used
High-Temperature Foundry Actuation
The Viton seals allow this cylinder to operate reliably in foundries and heat-treating facilities up to 150 °C, controlling dampers, gates, or molds where standard seals would fail.
Heavy Industrial Press
Delivering over 44 kN of force at 0.9 MPa, the SC250X400H is suited for large-scale pressing, stamping, or forming operations, especially in hot-process environments.
Large-Scale Material Handling
Use this cylinder for lifting or positioning heavy pallets and bulk materials on high-temperature processing lines, where its 400 mm stroke and high force capacity provide reliable, repeatable motion.
Is the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X400H the Right Cylinder?
Select the SC250X400H for heavy-duty clamping, pressing, or lifting where ambient temperatures exceed the standard 70 °C limit. 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 over 300 mm, always evaluate the rod bearing load; the 50 mm rod on this 400 mm stroke is robust, but significant side loading still requires an external guide or a guided cylinder to prevent rod bending and premature seal wear.
To ensure a direct replacement, match five key points: the 250 mm bore, the 400 mm stroke, the PT1 inch port thread, the basic (no bracket) mounting configuration, and the absence of a built-in magnet. This cylinder uses the standard PT port thread and does not include a magnet for barrel-mounted sensors.
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 SC250X400H FAQ
At the standard operating pressure of 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 SC series is a tie-rod cylinder, not an ISO 15552 profile cylinder. It is shorter and dimensionally different, so ISO 15552 mounts will not fit. Use AirTAC SC-series specific mounting accessories like the F-SC250LB foot mount or F-SC250TC centre trunnion.
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