Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X400S
The AirTAC Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X400S 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 SC250X400S
The SC250X400S is a large-bore 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). With a 250 mm bore and 400 mm stroke, this ISO 6430 class actuator uses a robust 50 mm diameter piston rod with M42x2 male knuckle threads and a 40 mm adjustable air cushion to decelerate high-inertia loads smoothly.
A factory-installed magnet allows direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the barrel for non-contact position feedback. The body length A is 294 mm, giving an approximate extended length of 694 mm, and the 1-inch PT ports supply ample flow for speeds of 30-500 mm/s. This genuine AirTAC SC cylinder is suited to heavy pressing, clamping, and material-forming tasks.
Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X400S Technical Specifications
| Model | Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X400S |
|---|---|
| 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 SC250X400S
| 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 SC250X400S Is Used
Heavy Press & Forming
Provides up to 44178 N of push force at 0.9 MPa for stamping, bending, or die-casting ejection, with a 50 mm rod resisting deflection under high compressive loads.
Pallet & Bulk Handling
Drives large lift tables, tilters, or pallet dispensers in logistics centers, where the 40 mm cushion absorbs the inertia of heavy, shifting loads.
Structural Test Rigs
Applies controlled, high-force linear motion in civil engineering or materials test frames, with the built-in magnet enabling precise stroke-end sensing for data acquisition.
Is the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X400S the Right Cylinder?
Selecting the SC250X400S means matching a 250 mm bore tie-rod platform to a 400 mm stroke within the standard range (up to 1500 mm). If your force requirement is lower, stepping down to the 200 mm bore reduces push to 15708 N at 0.5 MPa, saving space and air consumption. For strokes over 300 mm, always evaluate side-load conditions: a 50 mm rod is stiff, but an external guide or guided-cylinder configuration is recommended if the load is not perfectly axial.
For drop-in replacement, match five points: 250 mm bore, 400 mm stroke, PT port thread, the built-in magnet (-S suffix), and basic mounting. This is a tie-rod cylinder, not an ISO 15552 profile, so dimensional interchangeability is limited to another AirTAC SC250 of the same configuration.
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 SC250X400S FAQ
At 0.5 MPa (approximately 72.5 psi), the cylinder produces 24544 N pushing and 23562 N pulling. At the maximum operating pressure of 0.9 MPa, the push force increases to 44178 N. The theoretical maximum at 1.0 MPa is 5006 kgf.
No. The SC250X400S is a double-acting pneumatic cylinder and will drift or drop if air pressure is lost, exhausted, or the directional valve is centered. For static load holding without live pressure, an external rod lock, brake, or pilot-operated check valve must be added to the circuit.
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