Airtac AIRTAC SC125-160 Standard Cylinder SC125X400G
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X400G 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 SC125X400G
The SC125X400G is a heavy-duty double-acting pneumatic cylinder from the AirTAC SC tie-rod series, delivering a substantial 6136 N of push force at an operating pressure of just 0.5 MPa. With a 400 mm stroke and a robust 32 mm piston rod, this model is built for demanding industrial linear motion tasks where high force and reliable cycling are critical.
This variant features a G (BSP parallel) port thread for versatile plumbing compatibility and operates with standard TPU seals across a temperature range of -20 to +70 °C. The adjustable air cushion at each end, with a 28 mm cushion length, effectively decelerates the piston to reduce end-of-stroke impact, protecting the cylinder and the machine structure.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X400G Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X400G |
|---|---|
| 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 SC125X400G
| 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 SC125X400G Is Used
Pallet Lifting & Transfer
The 6136 N push force at 0.5 MPa easily lifts and transfers heavy pallets or engine blocks between conveyor stations in automated logistics and assembly lines.
Heavy-Duty Clamping
Provides the high, consistent clamping force needed for CNC machining fixtures on large castings or weldments, ensuring the workpiece remains secure during metal removal.
Industrial Compaction
Ideal for waste compaction or baling machinery, using its 11045 N maximum push force at 0.9 MPa to compress materials into dense, manageable forms for recycling or disposal.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X400G the Right Cylinder?
Select the SC125X400G when your application requires the force capacity of a 125 mm bore—6136 N push at 0.5 MPa. If this force exceeds your requirement, stepping down to the 100 mm bore (3927 N at 0.5 MPa) can reduce air consumption and footprint. For a longer 400 mm stroke, always evaluate side-load conditions; an unsupported rod can experience bending moments. Use an external guide rail or a guided cylinder if significant radial loads are present.
For a direct replacement, match these five key specifications: bore (125 mm), stroke (400 mm), port thread (G), mounting style (basic), and magnet option (none). This ensures dimensional and functional interchangeability with an existing AirTAC SC125 tie-rod cylinder.
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 SC125X400G FAQ
At 0.7 MPa operating pressure, this 125 mm bore cylinder generates 8590 N of push force on extension and 5734 N of pull force on retraction. The maximum push force at the 0.9 MPa upper limit is 11045 N.
No, not without an adapter. The SC125X400G has G (BSP parallel) ports, which are not directly compatible with PT (tapered) fittings. For a drop-in replacement of a PT-threaded cylinder, you must order the standard PT thread version (SC125X400). Always verify port thread type before ordering.
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