Airtac AIRTAC SC125-160 Standard Cylinder SC125X300H
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X300H is a genuine double-acting standard air cylinder with a Ø125mm bore and 300mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke300 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X300H
The AirTAC SC125X300H is a double-acting single-rod pneumatic cylinder delivering 6136 N push and 5734 N pull at 0.5 MPa, rising to 11045 N at 0.9 MPa. This model features a 300 mm stroke with a 32 mm diameter piston rod and M27x2 male rod thread for robust mechanical coupling.
Equipped with Viton (FKM) seals designated by the ‘H’ suffix, this cylinder is rated for high-temperature operation from 0 to +150°C, making it suitable for hot environments where standard seals would degrade. The SC125 is an ISO 6430 class tie-rod cylinder with a 28 mm adjustable air cushion and PT1/2 ports.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X300H Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X300H |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 300 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 SC125X300H
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×300 | 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 SC125X300H Is Used
High-Temperature Actuation
The Viton seals allow this SC125X300H to operate reliably in ovens, autoclaves, or near heat sources up to 150°C, where standard NBR or TPU seals would fail.
Heavy-Duty Clamping
Generating over 11 kN of force at 0.9 MPa, this cylinder provides the high clamping pressure needed for heavy fabrication jigs, welding fixtures, and die-casting mold locks.
Material Handling Lift
With a 300 mm stroke and 5734 N pull force, it is well-suited for lifting and tilting heavy bins or pallets in high-temperature wash-down or drying stations.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X300H the Right Cylinder?
Choose the SC125 when your application requires a force class around 6136 N at standard plant pressure. For a lighter, more compact solution, step down to the SC100 bore, which provides 3927 N push at 0.5 MPa. For higher force requirements, the SC160 bore delivers 10053 N at the same pressure.
At a 300 mm stroke, ensure side loads are managed; long unsupported strokes on a single rod can create bending moments. Use an external linear guide or a guided cylinder if the load is not perfectly axial. For direct replacement, match the 125 mm bore, 300 mm stroke, PT1/2 port thread, and ensure the high-temperature Viton seal material is specified.
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 SC125X300H FAQ
At 0.7 MPa operating pressure, the theoretical push force is 8590 N and the pull force is 5734 N. The maximum operating force at 0.9 MPa is 11045 N push.
No. This is a standard double-acting cylinder and will not hold position if air pressure is exhausted or lost. For load-holding safety, you must add an external rod lock, a pilot-operated check valve, or use a mechanical brake.
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