Airtac AIRTAC SC125-160 Standard Cylinder SC125X120S
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X120S is a genuine double-acting standard air cylinder with a Ø125mm bore and 120mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke120 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X120S
The SC125X120S is a double-acting tie-rod cylinder delivering 6136 N of push force at 0.5 MPa (11045 N at 0.9 MPa). Its 120 mm stroke suits medium-travel clamping, pressing, and material-handling tasks. The built-in magnet (suffix -S) allows CMSG/DMSG/EMSG sensors to mount directly on the barrel for non-contact position sensing.
This 125 mm bore model uses a 32 mm piston rod with M27x2 male threads and PT1/2 ports. The adjustable air cushion (28 mm length) decelerates the piston smoothly at end-of-stroke. As an ISO 6430 class cylinder, it offers a compact tie-rod design that is shorter than ISO 15552 profiles, making it a space-efficient choice for heavy industrial automation.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X120S Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X120S |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 120 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 SC125X120S
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×120 | 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 SC125X120S Is Used
Heavy Part Clamping
The 6136 N push force at 0.5 MPa securely clamps large weldments and castings during machining or assembly, with magnetic sensors confirming clamp position.
Pallet Stop & Lift
Deploy the SC125X120S as a robust pallet stop or lift station in conveyor systems. The built-in magnet enables end-of-stroke detection for sequencing.
Press & Forming Assist
Use this cylinder for press-assist and light forming operations requiring up to 11045 N at 0.9 MPa. The adjustable cushion protects tooling at the end of the stroke.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X120S the Right Cylinder?
Choose the SC125 bore when your application needs roughly 6100 N at standard plant air. If you require less force, the SC100 provides 3927 N at 0.5 MPa; for higher thrust, the SC160 delivers 10053 N. Always match bore, 120 mm stroke, PT1/2 ports, and the -S magnet when replacing an existing unit.
For strokes of 300 mm or longer, side loads become a critical concern—consider an external guide rail or a guided cylinder to protect the rod bearing from bending moments.
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 SC125X120S FAQ
At 0.5 MPa the push force is 6136 N and pull force is 5734 N. At 0.7 MPa push reaches 8590 N, and at the maximum operating pressure of 0.9 MPa it delivers 11045 N. The theoretical maximum at 1.0 MPa is 1251 kgf.
Yes. The -S suffix indicates a built-in magnet on the piston. This lets you attach CMSG (reed) or DMSG/EMSG (solid-state) sensors directly to the cylinder barrel for reliable, non-contact position feedback.
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