Airtac AIRTAC SC125-160 Standard Cylinder SC125X70
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X70 is a genuine double-acting standard air cylinder with a Ø125mm bore and 70mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke70 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X70
The SC125X70 is a double-acting pneumatic cylinder from the AirTAC SC tie-rod series, combining a 125 mm bore with a 70 mm standard stroke. It generates a substantial 6136 N of push force at 0.5 MPa (11045 N at the 0.9 MPa maximum operating pressure), making it suitable for heavy pressing, clamping, and lifting tasks in industrial automation.
Built with a 32 mm diameter piston rod and an M27x2 rod-end thread, this model includes a 28 mm adjustable air cushion at each end to decelerate high-inertia loads quietly. The body length A is 203 mm, giving a compact footprint for its force class. Operating on 40 µm filtered air, it uses standard PT ports and TPU seals for a temperature range of -20 to +70 °C.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X70 Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X70 |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 70 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 SC125X70
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×70 | 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 SC125X70 Is Used
Heavy-Duty Press Frames
Delivers over 11 kN of force at 0.9 MPa for pressing bearings, bushings, or forming sheet metal in compact workstations.
Pallet Stop & Lift Gates
The 70 mm stroke provides a decisive stop or lift action for heavy pallets on gravity or powered roller conveyors.
Industrial Clamping Fixtures
Holds large weldments or castings securely during machining, with the adjustable cushion absorbing shock for consistent part quality.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X70 the Right Cylinder?
Choose the SC125X70 when your application needs roughly 6000 N of force from a 0.5 MPa supply. If your load is closer to 4000 N, stepping down to the SC100 bore (3927 N at 0.5 MPa) can reduce air consumption and physical size. For strokes of 300 mm or longer, always check for side loads—an unsupported 32 mm rod can bend under off-axis forces; use an external guide or a guided cylinder to protect the rod bearing.
When replacing an existing unit, match five points exactly: 125 mm bore, 70 mm stroke, PT port thread, basic mounting (no brackets), and no magnet. This cylinder is a tie-rod design, not an ISO 15552 profile, so it is dimensionally shorter and not interchangeable with ISO 15552 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 SC125X70 FAQ
At 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, push force reaches 11045 N. The theoretical maximum at 1.0 MPa is 1251 kgf.
This specific model (SC125X70) does not include a built-in magnet. To use CMSG/DMSG/EMSG sensors for position feedback, order the -S variant (SC125X70S) which has a magnet integrated into the piston.
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