Airtac AIRTAC SC125-160 Standard Cylinder SC125X50FA
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X50FA is a genuine double-acting standard air cylinder with a Ø125mm bore and 50mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke50 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X50FA
The SC125X50FA is a double-acting pneumatic cylinder from the AirTAC SC tie-rod series, combining a 125 mm bore with a compact 50 mm stroke. At 0.5 MPa, it generates a push force of 6136 N and a pull force of 5734 N, making it suitable for heavy clamping and pressing tasks where a short, powerful linear movement is required.
This model features a front rectangular flange (FA) for rigid end-face mounting, with the accessory code F-SC125FA. The 32 mm diameter piston rod includes an M27x2 male knuckle thread, and the cylinder body length (A) is 203 mm. Its adjustable air cushion, with a 28 mm cushion length, decelerates the piston smoothly at the end of the stroke.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X50FA Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X50FA |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 50 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 SC125X50FA
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×50 | 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 SC125X50FA Is Used
Heavy-Duty Press Frames
The 6136 N push force at 0.5 MPa makes this cylinder ideal for short-stroke pressing, staking, or riveting operations where the front flange mount provides a stable, rigid connection to the press frame.
Fixture Clamping
Use the SC125X50FA for powerful, repeatable clamping of large workpieces in machining centres or welding fixtures. The 50 mm stroke offers fast clamp/unclamp cycles with high holding force.
Die Cushion Actuation
In metal forming or injection moulding, this cylinder can act as a short-stroke die cushion or knockout actuator, leveraging its 32 mm rod and adjustable cushion to manage impact at the end of travel.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X50FA the Right Cylinder?
Select the SC125X50FA when your application needs a high-force, short-stroke actuator that can be rigidly mounted from the rod-end face. If the 6136 N push force at 0.5 MPa is slightly more than required, consider stepping down to the SC100 bore, which provides 3927 N at the same pressure. For strokes of 300 mm or longer on this bore size, evaluate side-load conditions carefully; the 32 mm rod may require an external linear guide to prevent bearing wear and rod deflection.
To guarantee a correct replacement, match five key points: the 125 mm bore, the 50 mm stroke, the PT port thread, the FA front flange mounting, and the absence of a magnet. This model uses standard TPU seals for a temperature range of -20 to +70 °C.
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 SC125X50FA FAQ
At 0.7 MPa operating pressure, the SC125X50FA produces a theoretical push force of 8590 N and a pull force of 5734 N (the pull force value at 0.5 MPa is listed as 5734 N; confirm the 0.7 MPa pull force from the full datasheet). The maximum push force at 0.9 MPa is 11045 N.
No, the FA suffix designates a front rectangular flange mount, which is a fixed, non-pivoting mounting style. If your application requires the cylinder body to pivot, you would need a centre trunnion (TC) or rear clevis (CA or CB) mounting variant instead.
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