Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X70S
The AirTAC Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X70S is a genuine double-acting standard air cylinder with a Ø250mm bore and 70mm stroke, PT1" air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ250 mm
- Stroke70 mm
- Port sizePT1"
- Acting typeDouble acting
- Rod threadM42×2
- CushionAdjustable, 40 mm
About the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X70S
The AirTAC SC250X70S is a large-bore double-acting tie-rod cylinder engineered for heavy industrial force applications. With a 250 mm bore and 70 mm stroke, it generates a substantial 24544 N of push force at 0.5 MPa (44178 N at the maximum 0.9 MPa operating pressure), driven by a robust 50 mm diameter piston rod.
This model includes the -S suffix, signifying a built-in magnet along the barrel. This allows for direct, non-contact position sensing using standard CMSG, DMSG, or EMSG reed and solid-state sensors, simplifying automation integration. The cylinder features an adjustable pneumatic cushion (40 mm length) to decelerate high-inertia loads at the end of stroke, and uses standard PT1 inch ports with a TPU seal for operation in ambient temperatures from -20 to +70 °C.
Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X70S Technical Specifications
| Model | Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X70S |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Stroke | 70 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 SC250X70S
| SC | Standard tie-rod cylinder series. |
|---|---|
| 250 | Bore size in mm. |
| ×70 | 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 SC250X70S Is Used
Heavy Press Tool Actuation
Delivers up to 44178 N of force at 0.9 MPa for short-stroke pressing, clamping, and punching operations in metal forming and heavy fabrication cells.
Industrial Gate & Damper Control
The 70 mm stroke and high force are ideal for rapidly opening and closing heavy material flow gates, diverters, or large ventilation dampers in processing plants.
Automated Welding Fixtures
With a built-in magnet for sensor feedback, this cylinder provides reliable clamping confirmation in automated robotic welding jigs, ensuring part presence before the cycle starts.
Is the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X70S the Right Cylinder?
Select the SC250X70S for applications requiring extreme push force in a compact stroke. If your force requirement is lower, stepping down to the 200 mm bore reduces push force to 15708 N at 0.5 MPa, potentially lowering air consumption. For longer strokes, the SC250 bore supports up to 1500 mm as standard. When replacing an existing cylinder, ensure a 5-point match: 250 mm bore, 70 mm stroke, PT1 inch port thread, the built-in magnet for sensor compatibility, and the basic (no bracket) mounting configuration. As an ISO 6430 class cylinder, its dimensions are specific to this tie-rod design and are 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 SC250X70S 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. The AirTAC SC series is a tie-rod cylinder and is physically shorter than an ISO 15552 profile cylinder of the same bore and stroke. It is not dimensionally interchangeable. For a direct replacement, you must match another AirTAC SC tie-rod cylinder with a 250 mm bore, 70 mm stroke, PT1 inch ports, and a built-in magnet.
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