Airtac AIRTAC SC125-160 Standard Cylinder SC125X275S
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X275S is a genuine double-acting standard air cylinder with a Ø125mm bore and 275mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke275 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X275S
The SC125X275S is a robust double-acting pneumatic cylinder from the AirTAC SC tie-rod series, combining a 125 mm bore with a 275 mm stroke. This model generates a substantial push force of 6136 N at 0.5 MPa and reaches 11045 N at the maximum operating pressure of 0.9 MPa, making it suitable for heavy-duty clamping and pressing tasks.
A built-in magnet is integrated into the piston, designated by the 'S' suffix, allowing for direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors on the barrel for precise position feedback. The cylinder features a 32 mm diameter piston rod with an M27x2 thread, an adjustable air cushion of 28 mm at each end, and standard PT1/2 ports, operating reliably within a temperature range of -20 to +70 °C.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X275S Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X275S |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 275 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 SC125X275S
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×275 | 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 SC125X275S Is Used
Pallet Stop & Lift
Deploys 6136 N of push force at standard line pressure to reliably stop and lift heavy pallets on conveyor transfer stations, with magnet sensors confirming the raised position.
Heavy-Duty Clamping
Ideal for welding jigs and assembly fixtures requiring up to 11045 N of clamping force at 0.9 MPa, where the adjustable cushion decelerates the heavy tooling smoothly.
Press-Fit Assembly
Provides the controlled, high-force linear motion needed for pressing bearings or bushings into housings, with sensor feedback ensuring complete insertion depth is achieved.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X275S the Right Cylinder?
For applications requiring less force, consider stepping down to the SC100 bore, which provides 3927 N of push force at 0.5 MPa. If a higher force is needed, the SC160 bore delivers 10053 N at the same pressure. This 275 mm stroke is well within the 1500 mm maximum standard stroke for the 125 bore.
To ensure a successful replacement, match five key specifications: the 125 mm bore, the 275 mm stroke, the PT1/2 port thread, the built-in magnet (-S suffix), and any required mounting accessories. As an ISO 6430 class cylinder, this model is dimensionally aligned with that standard for larger bores. For this stroke length, ensure the load is guided and side forces are minimal to prevent excessive wear on the rod bearing and piston seals.
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 SC125X275S FAQ
At 0.5 MPa operating pressure, the theoretical push force on the outstroke is 6136 N, and the pull force on the retract stroke is 5734 N. The maximum force at 0.9 MPa is 11045 N.
No. The SC125X275S is a double-acting cylinder and will not hold its position if air pressure is lost or the directional valve is centered. The piston will drift. For load-holding applications, you must add an external rod lock or a pilot-operated check valve.
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