Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X40
The AirTAC Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X40 is a genuine double-acting standard air cylinder with a Ø250mm bore and 40mm stroke, PT1" air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ250 mm
- Stroke40 mm
- Port sizePT1"
- Acting typeDouble acting
- Rod threadM42×2
- CushionAdjustable, 40 mm
About the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X40
The AirTAC SC250X40 is a large-bore double-acting tie-rod cylinder delivering substantial force in a compact 40 mm stroke. At 0.5 MPa it generates 24544 N pushing and 23562 N pulling, making it suitable for heavy clamping or short-throw pressing tasks.
This model uses a 50 mm diameter piston rod with an M42x2 male thread and a 40 mm adjustable air cushion at each end. The body length A is 294 mm, giving an extended length of approximately 334 mm. Standard PT1 inch ports supply the air flow needed for its 5006 kgf theoretical force class.
Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X40 Technical Specifications
| Model | Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X40 |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Stroke | 40 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 SC250X40
| SC | Standard tie-rod cylinder series. |
|---|---|
| 250 | Bore size in mm. |
| ×40 | 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 SC250X40 Is Used
Heavy Clamping
The 24544 N push force at 0.5 MPa is ideal for hydraulic-replacement clamping fixtures and large weldment jigs where a short, powerful stroke locks parts in place.
Press-Fit Assembly
Delivers a controlled 40 mm stroke for pressing bearings, bushings, or pins into heavy housings, using the adjustable cushion to soften the end-of-stroke impact.
Bulk Material Gate
Operates a short-throw discharge gate or diverter chute in mining or aggregate handling, where the 250 mm bore provides the force to shear through packed material.
Is the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X40 the Right Cylinder?
For a 250 mm bore, the SC250X40 sits at the top of the SC force range. If your load requires less force, stepping down to a 200 mm bore reduces push force to 15708 N at 0.5 MPa. For strokes this short, side loading is rarely the main concern, but always align the rod axis with the load path to protect the 50 mm rod and gland bearing. When replacing an existing cylinder, match five points: 250 mm bore, 40 mm stroke, PT1 inch ports, basic (no bracket) mounting, and the absence of a magnet. The SC is a tie-rod design and is not dimensionally 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 SC250X40 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 reaches 44178 N. The theoretical maximum at 1.0 MPa is 5006 kgf.
No. The SC250X40 is a double-acting cylinder and will drift or drop if pressure is lost or the directional valve is centered. The adjustable air cushion only decelerates the piston at stroke end; it does not lock or hold the load. For load holding, you must add an external rod brake or a pilot-operated check valve.
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