Airtac AIRTAC SC125-160 Standard Cylinder SC125X400H
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X400H 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 SC125X400H
The SC125X400H is a large-bore double-acting pneumatic cylinder delivering 6136 N of push force at 0.5 MPa and up to 11045 N at 0.9 MPa. With a 400 mm stroke and a robust 32 mm diameter piston rod, it is built for heavy industrial linear actuation tasks.
This model is fitted with high-temperature Viton (FKM) seals, extending the operating temperature range from the standard -20–70°C up to 0–150°C. It features a 28 mm adjustable air cushion at each end to decelerate high-inertia loads smoothly, and PT1/2 port threads for reliable air supply.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X400H Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X400H |
|---|---|
| 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 SC125X400H
| 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 SC125X400H Is Used
Conveyor Diverters
Operates heavy-duty diverter gates and transfer stations on large conveyor systems, handling high material flow rates with the 11045 N push force at 0.9 MPa.
Hot Press Actuation
Powers the clamping and pressing mechanisms in hot-forming presses or autoclaves, where the Viton seals reliably withstand continuous 150°C ambient temperatures.
Compactor Ram Drive
Drives the main ram on compactors and baling machines, providing the consistent 6136 N force at 0.5 MPa needed to compress waste or recyclable materials into dense bales.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X400H the Right Cylinder?
Select the SC125 bore when your application requires a force between the SC100 (push 3927 N at 0.5 MPa) and the SC160 (push 10053 N at 0.5 MPa). For this 400 mm stroke, ensure the load is guided externally if side forces are present; the 32 mm rod can experience bending under unsupported side loads at full extension. A guided cylinder or external linear rail is recommended.
For a direct replacement, match these five points exactly: 125 mm bore, 400 mm stroke, PT port thread, basic mounting (no bracket), and the absence of a built-in magnet. This is an ISO 6430 class tie-rod cylinder 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 AIRTAC SC125-160 Standard Cylinder SC125X400H FAQ
At the standard operating pressure of 0.5 MPa, the push force is 6136 N and the pull force is 5734 N. At the maximum operating pressure of 0.9 MPa, the push force increases to 11045 N.
This is a non-magnetic, basic mount cylinder with PT ports and Viton seals. To replace it, you need another 125mm bore, 400mm stroke tie-rod cylinder with PT1/2 ports, no magnet, and a temperature rating of at least 150°C. It will not directly swap with an ISO 15552 cylinder.
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