Airtac AIRTAC SC125-160 Standard Cylinder SC125X25
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X25 is a genuine double-acting standard air cylinder with a Ø125mm bore and 25mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke25 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X25
The SC125X25 is a double-acting tie-rod cylinder delivering 6136 N of push force at 0.5 MPa, making it suitable for heavy clamping and short-stroke pressing tasks. With a 125 mm bore and a 32 mm diameter piston rod, it provides robust thrust in a compact 228 mm extended length (body length A of 203 mm plus 25 mm stroke).
This model features an adjustable pneumatic cushion (28 mm length) to decelerate the piston smoothly at end of travel. As part of the ISO 6430 class for large bores, its speed range is 30-500 mm/s, and it operates on filtered air from 0.15 to 1.0 MPa with standard PT ports.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X25 Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X25 |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 25 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 SC125X25
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×25 | 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 SC125X25 Is Used
Heavy Part Clamping
Provides 6136 N of force at 0.5 MPa for securely holding large workpieces during machining or welding operations.
Short-Stroke Ejection
The 25 mm stroke ejects heavy stamped or molded parts from dies with consistent, powerful thrust.
Press-Fit Assembly
Delivers controlled force up to 11045 N at 0.9 MPa for pressing bearings or bushings into housings on assembly lines.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X25 the Right Cylinder?
For applications requiring slightly less force, the SC100 bore provides 3927 N at 0.5 MPa, while stepping up to the SC160 bore offers 10053 N. The short 25 mm stroke is ideal for precise ejection or clamping, but ensure the load is axially aligned to prevent side-loading the rod bearing. When replacing, match bore, stroke, PT port thread, basic mounting, and the absence of a magnet to ensure identical fit and function.
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 SC125X25 FAQ
At 0.7 MPa operating pressure, the SC125X25 generates 8590 N of push force. The theoretical maximum force at 1.0 MPa is 1251 kgf.
This basic model SC125X25 does not include a mounting accessory. You can order a rear single clevis separately using part code F-SC125CA or a double clevis with F-SC125CB, which attach to the cap end for pivoting applications.
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