Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X850
The AirTAC Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X850 is a genuine double-acting standard air cylinder with a Ø250mm bore and 850mm stroke, PT1" air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ250 mm
- Stroke850 mm
- Port sizePT1"
- Acting typeDouble acting
- Rod threadM42×2
- CushionAdjustable, 40 mm
About the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X850
The AirTAC SC250X850 is a double-acting tie-rod cylinder delivering a substantial 24544 N of push force at 0.5 MPa (44178 N at the 0.9 MPa maximum operating pressure). With an 850 mm stroke and a 50 mm diameter piston rod, this big-bore actuator is built for heavy industrial linear motion where high force and moderate speed are required.
This model features a 40 mm adjustable air cushion at each end to decelerate the large piston mass smoothly, reducing end-of-stroke impact. The body length A is 294 mm, giving a total extended length of approximately 1144 mm. As an ISO 6430 class cylinder, it operates in the 30-500 mm/s speed range and uses a PT1 port for air supply.
Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X850 Technical Specifications
| Model | Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X850 |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Stroke | 850 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 SC250X850
| SC | Standard tie-rod cylinder series. |
|---|---|
| 250 | Bore size in mm. |
| ×850 | 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 SC250X850 Is Used
Heavy Press & Forming
Provides the 24544 N push force at 0.5 MPa needed for actuating heavy-duty clamping fixtures, bending brakes, or small forming presses in metal fabrication.
Large Material Handling
Operates transfer gates or pusher arms for pallet-sized loads on heavy conveyor systems, where the 850 mm stroke covers wide material paths.
Structural Test Rigs
Applies controlled, high-force linear motion in civil or mechanical test setups, such as loading bridge bearing components or structural joints to 44178 N at 0.9 MPa.
Is the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X850 the Right Cylinder?
Select the SC250 bore when your application needs push forces in the 24544 N (at 0.5 MPa) class. If your load requires less force, stepping down to the SC200 bore provides 15708 N at 0.5 MPa, which may allow for a smaller, lighter installation. For an 850 mm stroke, always check for side loads: a 50 mm rod extending this far can experience bending stress if the load is not guided. Use external linear guides or a guided cylinder configuration to protect the rod bearings and seals.
For direct replacement, match five key points: 250 mm bore, 850 mm stroke, PT1 port thread, basic (no mounting accessory) configuration, and the absence of a magnet. This ensures dimensional and performance interchangeability with an existing AirTAC SC250X850 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 SC250X850 FAQ
At the standard 0.5 MPa operating pressure, 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. An 850 mm stroke with a 50 mm rod is susceptible to bending under side loads. The rod bearing is designed to support the piston rod axially, not to resist lateral forces. You must use an external guide rail system or a rod-aligned load to prevent premature seal wear, rod scoring, or bearing failure.
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