Airtac AIRTAC SC125-160 Standard Cylinder SC125X350SH
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X350SH is a genuine double-acting standard air cylinder with a Ø125mm bore and 350mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke350 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X350SH
The SC125X350SH is a high-force double-acting pneumatic cylinder delivering 6136 N of push force at 0.5 MPa and up to 11045 N at the maximum operating pressure of 0.9 MPa. With a 125 mm bore and a 350 mm stroke, this tie-rod actuator is built for heavy industrial tasks, featuring a robust 32 mm piston rod with an M27x2 knuckle thread and an adjustable air cushion of 28 mm at each end to decelerate large inertial loads.
This model is equipped with the 'H' suffix, specifying high-temperature Viton (FKM) seals that extend the operating temperature range from 0 to +150 °C, making it suitable for autoclaves, foundries, and hot-process machinery. As part of the ISO 6430 class for big-bore cylinders, its speed range is 30-500 mm/s. The body length A is 203 mm, resulting in a total extended length of approximately 553 mm.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X350SH Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X350SH |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 350 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 SC125X350SH
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×350 | 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 SC125X350SH Is Used
High-Temperature Process Automation
The Viton seals allow this cylinder to operate reliably in ambient temperatures up to 150 °C, making it ideal for actuating dampers, gates, or clamps in autoclaves, steam lines, and heat-treating equipment.
Heavy Palletising & Conveyor Stops
With over 11000 N of force at 0.9 MPa, the SC125X350SH can lift, stop, or transfer heavy pallets and bulk materials on high-capacity conveyor systems, absorbing impact with its 28 mm adjustable cushion.
Large-Format Press & Compaction
Delivering 6136 N at a standard 0.5 MPa supply, this cylinder is well-suited for compacting waste, forming panels, or powering agricultural balers where high force and a 350 mm stroke are required in a dusty, hot environment.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X350SH the Right Cylinder?
Select the SC125 when your application requires push forces in the 6000-11000 N range at standard plant air pressures. If your load is lighter, stepping down to an SC100 bore reduces the push force to 3927 N at 0.5 MPa, saving space and air consumption. For strokes of 350 mm, ensure that the 32 mm rod is adequately supported against side loads; if the load is not guided externally, consider adding a guide rod assembly or using a guided cylinder variant to prevent rod bearing damage and ensure smooth operation.
For a direct replacement, match five key points: 125 mm bore, 350 mm stroke, PT port thread, basic (no mounting) configuration, and the absence of a built-in magnet. This cylinder is a tie-rod design and is dimensionally shorter than an ISO 15552 profile cylinder, so it is not a drop-in replacement for those types.
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 SC125X350SH FAQ
At the standard 0.5 MPa operating pressure, 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 increases to 11045 N. The theoretical maximum force at 1.0 MPa is 1251 kgf.
No. The SC125X350SH is a double-acting cylinder and will not hold its position if air pressure is lost or the directional valve is centered. The adjustable air cushion only decelerates the piston at the end of its stroke to reduce impact; it does not lock or brake the load. 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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