Airtac AIRTAC SC125-160 Standard Cylinder SC125X520
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X520 is a genuine double-acting standard air cylinder with a Ø125mm bore and 520mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke520 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X520
The AirTAC SC125X520 is a double-acting tie-rod cylinder delivering a substantial 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 are engineered for heavy linear tasks, making the 520 mm stroke suitable for large-scale clamping, pressing, or material transfer.
This ISO 6430 class cylinder uses a PT1/2 port and an M27x2 rod thread. The body length A is 203 mm, giving a total extended length of approximately 723 mm. Operating on filtered air at 0.15-1.0 MPa, it provides a speed range of 30-500 mm/s and works reliably in standard temperatures from -20 to +70 °C with its TPU seals.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X520 Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X520 |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 520 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 SC125X520
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×520 | 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 SC125X520 Is Used
Pallet Stop & Lift
The 6136 N push force at 0.5 MPa easily raises or stops heavy pallets on conveyor lines, providing robust end-of-line positioning.
Heavy-Duty Pressing
Ideal for large assembly or laminating presses where the 11045 N maximum force at 0.9 MPa ensures consistent, high-pressure clamping.
Material Forming
Delivers the controlled, high-force linear motion required for bending, punching, or forming thick sheet materials in fabrication cells.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X520 the Right Cylinder?
Select the SC125 when your application needs over 6000 N of force at standard shop air. If a 125 mm bore is slightly oversized, stepping down to an SC100 provides 3927 N at 0.5 MPa, saving space and air consumption. For strokes at this length, always evaluate side loads; an unsupported 32 mm rod extending 520 mm can be subject to bending moments. Use an external guide or linear rail system to protect the rod bearing and seals.
For a direct replacement, match five key points: the 125 mm bore, 520 mm stroke, PT1/2 port thread, your specific mounting accessory (this is a basic model without brackets), and the absence of a magnet. This cylinder is a tie-rod design 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 SC125X520 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, the push force reaches 11045 N. The theoretical maximum at 1.0 MPa is 1251 kgf.
No. The SC125X520 is a double-acting cylinder and will not hold its position if pressure is exhausted or the directional valve is centered. For load holding, you must add a pilot-operated check valve or an external mechanical rod lock.
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