Airtac AIRTAC SC125-160 Standard Cylinder SC125X120SH
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X120SH 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 SC125X120SH
The AirTAC SC125X120SH is a double-acting tie-rod cylinder delivering 6136 N push and 5734 N pull at 0.5 MPa, rising to 11045 N at 0.9 MPa. Its 120 mm stroke suits medium-travel clamping and pressing tasks, while the 32 mm piston rod and 28 mm adjustable air cushion provide stable end-of-stroke deceleration.
This model carries the 'H' suffix, specifying Viton (FKM) seals that shift the operating temperature range to 0–150 °C. It is ideal for hot environments such as foundries, autoclaves, or engine test cells where standard polyurethane seals would degrade. The body length A is 203 mm, giving a total extended length of approximately 323 mm.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X120SH Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X120SH |
|---|---|
| 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 SC125X120SH
| 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 SC125X120SH Is Used
Hot Press & Molding
Viton seals withstand continuous 150°C operation, making this cylinder suitable for hydraulic-free clamping in composite molding, rubber vulcanization presses, and heated platen systems.
Heavy Material Handling
With over 1.1 tonnes of force at 0.9 MPa, the SC125X120SH can lift, tilt, or transfer heavy castings and steel fabrications on high-temperature processing lines.
Autoclave & Sterilization
The FKM seals resist steam and aggressive cleaning agents. Use this actuator for door locks, valve actuation, or product positioning inside autoclaves and sterilizers.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X120SH the Right Cylinder?
Choose the SC125 bore when you need over 6 kN of push force at standard shop air. If your load is lighter, stepping down to the SC100 bore (3927 N at 0.5 MPa) can reduce air consumption and physical size. For heavier loads, the SC160 bore provides 10053 N at the same pressure.
To replace an existing cylinder, match five points: 125 mm bore, 120 mm stroke, PT port thread, basic mounting (no bracket), and no magnet. The SC125X120SH is a tie-rod design and is not dimensionally interchangeable with ISO 15552 profile cylinders; it is an ISO 6430 class cylinder for heavy-duty applications.
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 SC125X120SH FAQ
At 0.5 MPa it produces 6136 N pushing and 5734 N pulling. 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 SC125X120SH is a double-acting cylinder and will drift or drop if pressure is exhausted or the directional valve is centered. For load holding without live pressure, you must add an external rod brake, a mechanical lock, or a pilot-operated check valve.
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