Airtac AIRTAC SC125-160 Standard Cylinder SC125X70STC
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X70STC is a genuine double-acting standard air cylinder with a Ø125mm bore and 70mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke70 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X70STC
The AirTAC SC125X70STC is a double-acting pneumatic cylinder delivering 6136 N of push force at 0.5 MPa (11045 N at the 0.9 MPa maximum operating pressure). Its 70 mm stroke, combined with a 32 mm diameter piston rod and a 28 mm adjustable air cushion, makes it a compact workhorse for short, high-force linear moves.
This specific model is factory-equipped with a built-in magnet (-S suffix) for direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors, and a centre trunnion mount (TC suffix) that includes the TCM1 bracket (F-SC125TC). The trunnion allows the cylinder to pivot, accommodating swinging loads without side-loading the rod. Operating temperature range is -20 to +70 °C with standard TPU seals.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X70STC Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X70STC |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 70 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 SC125X70STC
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×70 | 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 SC125X70STC Is Used
Heavy Part Clamping
The 11045 N max thrust securely clamps large weldments or castings in machining centres, with the trunnion mount allowing the cylinder to swing clear for part loading.
Press-Fit Assembly
Delivers a controlled 6136 N push at standard line pressure for pressing bearings or bushings into housings. The built-in magnet enables end-of-stroke confirmation via CMSG sensors.
Pivoting Conveyor Gate
The TC centre trunnion mount lets this cylinder pivot to actuate a heavy diverter gate on a conveyor line, handling the high inertial loads with its 32 mm rigid piston rod.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X70STC the Right Cylinder?
Choose the SC125 for applications needing 6136 N at 0.5 MPa. If your force requirement is lower, stepping down to an SC100 bore reduces push force to 3927 N at the same pressure, saving space and air consumption. For higher forces, the SC160 bore provides 10053 N.
For a direct replacement, match five points: 125 mm bore, 70 mm stroke, PT port thread, centre trunnion (TC) mounting, and the built-in magnet (-S) for sensor compatibility. The SC series is a tie-rod cylinder and is not dimensionally interchangeable with ISO 15552 profile cylinders. The big-bore SC125 is built to the ISO 6430 class standard for robust, heavy-duty applications.
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 SC125X70STC FAQ
At 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, push force reaches 11045 N. The theoretical maximum at 1.0 MPa is 1251 kgf.
No. The SC125 is a standard double-acting cylinder and will not hold position if pressure is exhausted or the directional valve is centred. For load holding, you must add an external rod brake, a mechanical lock, or a pilot-operated check valve in the circuit.
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