Airtac AIRTAC SC125-160 Standard Cylinder SC125X25H
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X25H is a genuine double-acting standard air cylinder with a Ø125mm bore and 25mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke25 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X25H
The AirTAC SC125X25H is a double-acting single-rod pneumatic cylinder with a 125 mm bore and a short 25 mm stroke, built for high-temperature environments. Its Viton (FKM) seals shift the operating temperature range to 0–150 °C, making it suitable for autoclaves, foundries, or drying equipment where standard TPU seals would degrade.
At 0.5 MPa air pressure this cylinder delivers 6136 N of push force and 5734 N on the pull stroke, with a 32 mm diameter piston rod and M27x2 rod-end thread. The tie-rod construction keeps the body length A to just 203 mm, and the adjustable air cushion (28 mm length) decelerates the piston smoothly at end-of-stroke.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X25H Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X25H |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 25 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 SC125X25H
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×25 | 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 SC125X25H Is Used
High-Temperature Clamping
The Viton seals allow the SC125X25H to operate reliably in ovens, autoclaves, or heated presses up to 150 °C, applying a short, powerful clamp stroke without seal degradation.
Hot Mould Ejection
Delivers a brief 25 mm push to eject parts from heated moulds in plastics or rubber processing, where ambient temperatures would harden standard nitrile seals.
Valve Actuation in Process Plant
With 6136 N of force at 0.5 MPa, this compact-stroke cylinder actuates large gate or butterfly valves on steam or hot-fluid lines, resisting heat soak from the pipework.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X25H the Right Cylinder?
Choose the SC125X25H when you need a large-bore, short-stroke actuator that can withstand sustained elevated temperatures. If your force requirement is lower, stepping down to the 100 mm bore reduces push force to 3927 N at 0.5 MPa; for even higher force, the 160 mm bore provides 10053 N. For strokes longer than 25 mm, the SC125 standard range extends to 1500 mm.
When replacing an existing cylinder, match five points: 125 mm bore, 25 mm stroke, PT port thread, basic (no bracket) mounting, and the -H Viton seal designation. This is an ISO 6430 class tie-rod cylinder 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 SC125X25H FAQ
At 0.7 MPa supply pressure the SC125X25H produces 8590 N extending (push) and 5734 N retracting (pull). The maximum operating pressure is 1.0 MPa, yielding a theoretical push force of 11045 N.
This model code does not include the -S magnet option, so the piston does not carry a magnetic ring. To use CMSG/DMSG/EMSG sensors, order SC125X25SH instead. The Viton seals remain unaffected by the magnet option.
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