Airtac AIRTAC SC125-160 Standard Cylinder SC125X120STC
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X120STC 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 SC125X120STC
The SC125X120STC is a double-acting pneumatic cylinder delivering a substantial 6136 N of push force at 0.5 MPa (11045 N at the 0.9 MPa maximum operating pressure). With a 120 mm stroke and a robust 32 mm piston rod, this model is built for heavy linear handling tasks where a pivoting mount is required.
This configuration includes a built-in magnet (suffix S), allowing easy attachment of CMSG/DMSG/EMSG sensors directly to the tie-rod barrel for reliable end-of-stroke detection. The TC centre trunnion mount (supplied with the TCM1 bracket, part code F-SC125TC) allows the cylinder body to pivot, accommodating swinging loads and angular motion. Operating on standard 40 µm filtered air, it uses a PT port thread and TPU seals for a temperature range of -20 to +70 °C.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X120STC Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X120STC |
|---|---|
| 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 SC125X120STC
| 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 SC125X120STC Is Used
Heavy Part Diverting
Pivots a diverter gate on a wide conveyor line. The 6136 N push force at 0.5 MPa easily redirects heavy pallets or large packages, with the trunnion mount absorbing the arc of motion.
Weld Fixture Clamping
Powers a swing clamp on a large fabrication jig. The cylinder pivots into position via the TC mount, then applies 11045 N of clamping force at full 0.9 MPa pressure to hold steel assemblies for welding.
Agricultural Implement Control
Actuates a pivoting chute or hopper door on a harvester or spreader. The built-in magnet provides position feedback to the cab, confirming the door is fully open or closed in dusty field conditions.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X120STC the Right Cylinder?
Select the SC125 bore when your application requires a push force between the SC100 (3927 N at 0.5 MPa) and the SC160 (10053 N at 0.5 MPa). The 120 mm stroke is a standard length, well within the 1500 mm maximum for this bore. For replacement, ensure a 5-point match: 125 mm bore, 120 mm stroke, PT port thread, centre trunnion (TC) mounting, and a built-in magnet (-S) for sensor compatibility.
Given the 32 mm rod diameter and the 120 mm stroke, side-load bending is not a primary concern for this compact configuration. However, for any application introducing a radial force, always use an external guide rail or rod-alignment coupler to protect the rod bearing and seals from premature wear.
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 SC125X120STC 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 AirTAC SC series is a tie-rod cylinder that is physically shorter than a comparable ISO 15552 profile cylinder, so it is not dimensionally interchangeable. It must only replace another AirTAC SC tie-rod cylinder with matching bore, stroke, PT ports, and TC centre trunnion mount.
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