Airtac AIRTAC SC125-160 Standard Cylinder SC125X400FA
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X400FA is a genuine double-acting standard air cylinder with a Ø125mm bore and 400mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke400 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X400FA
The SC125X400FA is a double-acting pneumatic cylinder from the AirTAC SC tie-rod series, delivering a substantial 6136 N of push force at 0.5 MPa and up to 11045 N at the maximum operating pressure of 0.9 MPa. With a 125 mm bore and 400 mm stroke, this model features a 32 mm piston rod and an adjustable air cushion length of 28 mm to decelerate the piston smoothly at end-of-travel.
This specific configuration includes an FA front rectangular flange (F-SC125FA), allowing the cylinder to be rigidly mounted to a panel or machine surface from the rod-end. The standard PT port thread is 1/2 inch, and the rod features an M27x2 knuckle thread for secure tooling attachment. As an ISO 6430 class cylinder, it is designed for heavy-duty industrial applications requiring high force within a compact tie-rod envelope.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X400FA Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X400FA |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 400 mm |
| Acting type | Double acting |
| Port size | PT1/2 |
| Rod thread | M27×2 |
| 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, 28 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (approx.) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac AIRTAC SC125-160 Standard Cylinder SC125X400FA
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | 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 AIRTAC SC125-160 Standard Cylinder SC125X400FA Is Used
Heavy Conveyor Diverting
Provides the high push force needed to divert heavy pallets or packages on wide conveyor lines, with the front flange ensuring stable alignment to the frame.
Press and Clamping Fixtures
Delivers up to 11045 N of clamping force for industrial presses and welding fixtures, where the rigid FA flange mount prevents deflection under load.
Material Forming Assistance
Used as a powerful actuator in bending or forming machines, leveraging its 32 mm rod and tie-rod construction for reliable, repeatable linear motion.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X400FA the Right Cylinder?
Select the SC125 when your application requires a force class between the SC100 (3927 N at 0.5 MPa) and the SC160 (10053 N at 0.5 MPa). For this 400 mm stroke, ensure the load is guided externally if significant side forces are present; the 32 mm rod provides good column strength, but an unsupported long stroke can still experience bending moments under lateral loads. To ensure a correct replacement, match five key points: the 125 mm bore, 400 mm stroke, PT port thread, FA front flange mounting, and the absence of a built-in magnet.
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 AIRTAC SC125-160 Standard Cylinder SC125X400FA FAQ
At 0.7 MPa operating pressure, the SC125 cylinder generates a theoretical push force of 8590 N. The pull force on the return stroke is 5734 N, accounting for the area reduction from the 32 mm piston rod.
No, the AirTAC SC series is a tie-rod cylinder and is shorter in overall length than a typical ISO 15552 profile cylinder. It is not dimensionally interchangeable with ISO 15552 mounts. It should be replaced with another AirTAC SC125 tie-rod cylinder matching the same bore, stroke, and FA front flange mounting.
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