Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X120S
The AirTAC Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X120S is a genuine double-acting standard air cylinder with a Ø250mm bore and 120mm stroke, PT1" air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ250 mm
- Stroke120 mm
- Port sizePT1"
- Acting typeDouble acting
- Rod threadM42×2
- CushionAdjustable, 40 mm
About the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X120S
The SC250X120S is a large-bore, double-acting pneumatic cylinder engineered for heavy-duty industrial applications requiring substantial force. With a 250 mm bore and 120 mm stroke, it generates 24544 N of push force at 0.5 MPa and up to 44178 N at the maximum operating pressure of 0.9 MPa, making it suitable for pressing, clamping, and lifting heavy loads.
This model features a built-in magnet (denoted by the -S suffix), allowing for direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the barrel for precise position feedback. It is built with a 50 mm diameter piston rod, PT1 inch ports, and an adjustable air cushion of 40 mm to decelerate the piston smoothly at the end of the stroke.
Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X120S Technical Specifications
| Model | Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X120S |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Stroke | 120 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 SC250X120S
| SC | Standard tie-rod cylinder series. |
|---|---|
| 250 | Bore size in mm. |
| ×120 | 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 SC250X120S Is Used
Heavy Pressing & Stamping
Delivers up to 44178 N of force at 0.9 MPa for industrial pressing, die-casting ejection, and metal stamping operations where high thrust is non-negotiable.
Material Handling & Lifting
Provides the muscle for lifting and tilting heavy pallets or containers. The built-in magnet enables end-of-stroke sensing to sequence conveyors or lock-out systems safely.
Large-Scale Clamping
Ideal for clamping large workpieces in CNC machining or welding fixtures. The 40 mm adjustable cushion protects the assembly from impact damage during high-speed cycles.
Is the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X120S the Right Cylinder?
Select the SC250X120S when your application demands forces in the 24544 N range at standard plant pressure. If your load requires less force, consider stepping down to the SC200 bore, which provides 15708 N of push force at 0.5 MPa. For applications requiring even greater force, this is the largest standard bore in the SC tie-rod family.
For a direct replacement, ensure the new cylinder matches these five points: 250 mm bore, 120 mm stroke, PT1 inch port thread, the built-in magnet (-S) for sensor compatibility, and the basic mounting configuration. This is an ISO 6430 class cylinder for large bores, but always verify tie-rod dimensions as it is not interchangeable with ISO 15552 profile cylinders.
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 SC250X120S FAQ
At 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.
Yes. The -S suffix in the model code SC250X120S indicates a built-in magnet. This allows you to clamp compatible AirTAC CMSG, DMSG, or EMSG sensors directly onto the cylinder barrel to detect piston position without additional brackets.
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