Airtac AIRTAC SC125-160 Standard Cylinder SC125X700STC
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X700STC is a genuine double-acting standard air cylinder with a Ø125mm bore and 700mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke700 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X700STC
The SC125X700STC is a double-acting pneumatic cylinder delivering 6136 N push force at 0.5 MPa and up to 11045 N at the maximum operating pressure of 0.9 MPa. Its 125 mm bore and 700 mm stroke are paired with a robust 32 mm piston rod and M27x2 knuckle thread, making it well-suited for heavy linear actuation tasks.
This model includes a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors and a centre trunnion mount (TC), supplied with the TCM1 bracket (F-SC125TC), allowing the cylinder to pivot during operation. The adjustable air cushion (28 mm length) decelerates the piston smoothly at stroke ends, protecting the assembly from impact damage.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X700STC Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X700STC |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 700 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 SC125X700STC
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×700 | 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 SC125X700STC Is Used
Heavy Conveyor Diverters
The 6136 N push force at 0.5 MPa drives heavy-duty gates and diverters on wide conveyor lines, reliably sorting pallets or large packages with the 700 mm stroke.
Industrial Press Feeders
Feeds heavy sheet metal or composite blanks into stamping presses. The centre trunnion mount allows the cylinder to pivot, accommodating the press's motion while the magnetic sensors confirm strip position.
Water Treatment Valve Actuation
Operates large butterfly or gate valves in water treatment plants. The 11045 N maximum force at 0.9 MPa provides ample torque for valves up to 12 inches, with the trunnion absorbing reaction forces.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X700STC the Right Cylinder?
Select the SC125 when your application requires force in the 6136 N class at standard plant pressure. If your load is lighter, stepping down to the SC100 bore reduces push force to 3927 N at 0.5 MPa. For a 700 mm stroke, the 32 mm rod provides good column strength, but any significant side load demands an external guide rail or a guided cylinder to prevent rod bearing wear and bending.
To ensure a correct replacement, match five points: 125 mm bore, 700 mm stroke, PT port thread, centre trunnion (TC) mounting with TCM1 bracket, and the built-in magnet for sensors. This tie-rod cylinder is shorter than an ISO 15552 profile and is dimensionally interchangeable only with another AirTAC SC125 of the same configuration.
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 SC125X700STC FAQ
At 0.5 MPa, push force is 6136 N and pull force is 5734 N. At the maximum operating pressure of 0.9 MPa, push force reaches 11045 N. The theoretical maximum force at 1.0 MPa is 1251 kgf.
No. The SC125 is a double-acting cylinder and will drift or drop if pressure is lost or the directional valve is centered. For load holding without live pressure, you must add a mechanical lock, an external rod brake, or a pilot-operated check valve. The adjustable air cushion only decelerates the piston at stroke end and is not a locking device.
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