Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X40S
The AirTAC Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X40S 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 SC250X40S
The SC250X40S is a large-bore, double-acting tie-rod cylinder from the AirTAC SC series, delivering a substantial push force of 24544 N at 0.5 MPa and reaching 44178 N at the maximum operating pressure of 0.9 MPa. With a 40 mm stroke and a 50 mm diameter piston rod, this model includes a built-in magnet (-S suffix), enabling direct mounting of CMSG, DMSG, or EMSG sensors on the barrel for reliable, non-contact position feedback.
This cylinder features a 294 mm body length (A dimension) and a 40 mm adjustable air cushion to decelerate the high-inertia piston smoothly. The standard PT1 inch port and M42x2 rod thread handle high flow rates, while the TPU/NBR seals provide a standard operating temperature range of -20 to +70 °C. As an ISO 6430 class cylinder, it is engineered for demanding industrial automation tasks requiring high force in a compact stroke.
Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X40S Technical Specifications
| Model | Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X40S |
|---|---|
| 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 SC250X40S
| 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 SC250X40S Is Used
Heavy-Duty Clamping
Generates up to 44178 N of force at 0.9 MPa for securely holding large weldments, castings, or structural components in place during machining or assembly processes.
Industrial Compaction
Ideal for short-stroke, high-force compaction tasks in waste management or recycling, using the 24544 N push at 0.5 MPa to compress materials into dense bales or containers.
Press-Fit Assembly
The 50 mm rod and 40 mm cushion provide the rigidity and controlled deceleration needed for pressing bearings, bushings, or pins into heavy housings with precise, repeatable motion.
Is the Airtac SC200-250 Tie-Rod Cylinder Aluminum Alloy SC250X40S the Right Cylinder?
Select the SC250X40S for applications needing maximum force in a short linear stroke. If your force requirement is lower, consider stepping down to the 200 mm bore model (15708 N at 0.5 MPa) to reduce air consumption and physical footprint. For strokes over 300 mm, side loading on the rod becomes a critical design factor, and an external guide mechanism is strongly recommended to protect the rod bearing and seals from premature wear.
To ensure a correct replacement, match these five key specifications: 250 mm bore, 40 mm stroke, PT port thread, the built-in magnet (-S) for sensor compatibility, and the basic mounting configuration. This cylinder is a direct replacement for another AirTAC SC250 tie-rod cylinder with identical parameters.
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 SC250X40S FAQ
The theoretical push force at 0.5 MPa is 24544 N, and at the maximum operating pressure of 0.9 MPa, it reaches 44178 N. The pull force at 0.5 MPa is 23562 N, due to the area reduction from the 50 mm piston rod.
Yes. The -S suffix in the model code SC250X40S indicates a built-in magnet on the piston. This allows you to clamp compatible AirTAC CMSG (reed) or DMSG/EMSG (solid-state) sensors directly onto the cylinder barrel's sensor groove for end-of-stroke or mid-stroke position sensing.
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