Airtac AIRTAC SC125-160 Standard Cylinder SC125X425S
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X425S is a genuine double-acting standard air cylinder with a Ø125mm bore and 425mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke425 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X425S
The AirTAC SC125X425S is a double-acting single-rod pneumatic cylinder delivering 6136 N of push force at 0.5 MPa (11045 N at the 0.9 MPa maximum operating pressure). Its 32 mm diameter piston rod and 28 mm adjustable air cushion handle heavy mid-stroke loads smoothly.
This model includes a built-in magnet (-S suffix), allowing CMSG/DMSG/EMSG reed or solid-state sensors to be clamped directly onto the tie-rod barrel for contactless end-of-stroke or mid-position detection. The 425 mm stroke sits well within the 1500 mm maximum standard stroke for the 125 mm bore, making it a standard stocked configuration.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X425S Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X425S |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 425 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 SC125X425S
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×425 | 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 SC125X425S Is Used
Pallet Transfer Systems
Moves heavy pallets or skids between conveyor lanes with the 6136 N push force at standard shop air, while the magnetic piston enables precise sensor-based sequencing.
Heavy-Duty Clamping
Provides up to 11045 N of clamping force for large welding or machining fixtures, with sensor feedback confirming the jaw is fully closed before the cycle starts.
Material Lift Assist
Powers a scissor-lift or vertical staging platform, using the 28 mm cushion to decelerate the mass smoothly and the magnet to signal safe arrival at the raised position.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X425S the Right Cylinder?
For applications needing less force, the 100 mm bore SC100 series provides 3927 N at 0.5 MPa, while the 160 mm bore steps up to 10053 N. The 425 mm stroke is substantial; ensure the rod is not subjected to lateral loads. If side forces are unavoidable, use an external linear guide or switch to a guided cylinder to prevent rod bending and premature bearing wear. When replacing, match bore (125 mm), stroke (425 mm), PT port thread, the built-in magnet (-S), and the basic mounting configuration.
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 SC125X425S FAQ
At 0.7 MPa (7 bar) operating pressure, the theoretical push force is 8590 N. The pull force on the retract stroke is 5734 N due to the 32 mm rod reducing the piston area.
Yes. The -S suffix indicates a factory-installed magnetic piston. You can clamp compatible CMSG, DMSG, or EMSG sensors onto the barrel's tie-rod slots to detect piston position without additional brackets.
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