Airtac AIRTAC SC125-160 Standard Cylinder SC125X300STC
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X300STC 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 SC125X300STC
The AirTAC SC125X300STC is a double-acting tie-rod cylinder delivering 6136 N push force at 0.5 MPa (11045 N at 0.9 MPa) from its 125 mm bore. With a 300 mm stroke and a 32 mm diameter piston rod, this model is built for heavy linear actuation tasks where mid-body pivoting support is essential.
This unit includes a built-in magnet (-S suffix) for direct mounting of CMSG/DMSG/EMSG sensors, and the TC suffix supplies it with a centre trunnion bracket (F-SC125TC with TCM1) for swinging loads. The adjustable air cushion (28 mm length) decelerates the piston smoothly, protecting the end caps during high-cycle operation.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X300STC Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X300STC |
|---|---|
| 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 SC125X300STC
| 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 SC125X300STC Is Used
Conveyor Diverter Gates
The 300 mm stroke and centre trunnion mount allow the cylinder to pivot as it extends, making it ideal for actuating heavy diverter flaps on wide conveyor lines in mining or aggregate handling.
Heavy Press Guard Doors
Delivering over 6000 N of force at standard shop air, this cylinder reliably raises and lowers large safety guard doors on stamping presses, with magnetic sensors confirming the fully closed position.
Wastewater Screen Rakes
The corrosion-resistant anodized barrel and tie-rod construction handle the damp environment of a wastewater plant, powering the pivoting rake mechanism that clears debris from bar screens.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X300STC the Right Cylinder?
Choose the SC125 bore when your application needs between 6136 N and 11045 N of push force (0.5-0.9 MPa). If your force requirement is lower, stepping down to the SC100 bore provides 3927 N at 0.5 MPa in a lighter package. For a 300 mm stroke on this 32 mm rod, ensure the load is guided externally if any side force is present—long unsupported rods are vulnerable to bending and bearing wear. For a direct replacement, match these five points: 125 mm bore, 300 mm stroke, PT port thread, centre trunnion (TC) mounting, and the built-in magnet (-S) for sensor compatibility.
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 SC125X300STC FAQ
At the standard operating pressure of 0.5 MPa, 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 at 1.0 MPa is 1251 kgf.
No. The SC125X300STC is a double-acting cylinder and will drift or drop if pressure is lost or the directional valve is centered. The adjustable air cushion only decelerates the piston at the end of stroke; it is not a locking or holding device. 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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