Airtac AIRTAC SC125-160 Standard Cylinder SC125X550SH
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X550SH is a genuine double-acting standard air cylinder with a Ø125mm bore and 550mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke550 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X550SH
The AirTAC SC125X550SH is a double-acting single-rod tie-rod cylinder with a 125 mm bore and 550 mm stroke, built for high-force industrial automation. It generates 6136 N pushing and 5734 N pulling at 0.5 MPa, rising to 11045 N at the maximum operating pressure of 0.9 MPa. The 32 mm diameter piston rod and 28 mm adjustable air cushion provide robust, controlled end-of-stroke deceleration.
This model includes a built-in magnet (-S suffix) for direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors, and Viton (FKM) seals (-H suffix) that extend the operating temperature range to 0–150 °C, making it suitable for hot environments. The body length is 203 mm, giving a total extended length of approximately 753 mm. Ports are PT1/2.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X550SH Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X550SH |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 550 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 SC125X550SH
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×550 | 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 SC125X550SH Is Used
Heavy Press & Clamping
Delivers up to 11045 N of force for stamping, riveting, or heavy-duty clamping fixtures in metal fabrication cells.
High-Temperature Material Handling
Viton seals allow reliable operation up to 150 °C for pushers, gates, or diverters on oven-fed conveyor lines.
Foundry & Forge Automation
Withstands radiant heat and aggressive atmospheres, positioning heavy moulds or operating tilt mechanisms in casting plants.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X550SH the Right Cylinder?
Select the SC125 for applications needing around 6000–11000 N of force. If your load is lighter, stepping down to the SC100 bore reduces push force to 3927 N at 0.5 MPa, saving air consumption and space. For higher forces, the SC160 bore offers 10053 N at 0.5 MPa. At a 550 mm stroke, ensure the rod is protected from side loads; consider an external guide or a guided cylinder if bending moments are present. For a direct replacement, match bore (125 mm), stroke (550 mm), PT1/2 ports, the built-in magnet (-S), and the Viton seal material.
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 SC125X550SH FAQ
At 0.5 MPa (5 bar), the cylinder delivers 6136 N pushing and 5734 N pulling. At the maximum operating pressure of 0.9 MPa, the pushing force increases to 11045 N.
No. The SC125 is a double-acting cylinder and does not hold position when pressure is exhausted or the valve is centred. The piston will drift. For load holding without live pressure, you must add an external rod brake or a pilot-operated check valve.
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