Airtac AIRTAC SC125-160 Standard Cylinder SC125X850STC
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X850STC is a genuine double-acting standard air cylinder with a Ø125mm bore and 850mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke850 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X850STC
The AirTAC SC125X850STC is a large-bore double-acting tie-rod cylinder delivering 6136 N of push force at 0.5 MPa and up to 11045 N at the maximum operating pressure of 0.9 MPa. With an 850 mm stroke and a robust 32 mm diameter piston rod, this ISO 6430 class cylinder is built for heavy linear actuation tasks where side loads are managed externally.
This specific 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) for pivoting applications. The adjustable air cushion at each end is 28 mm long, and the total extended body length is approximately 1053 mm.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X850STC Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X850STC |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 850 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 SC125X850STC
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×850 | 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 SC125X850STC Is Used
Heavy Material Handling
Pivoting transfer arms on conveyor systems use the 850 mm stroke and trunnion mount to sweep heavy parts between lines with high force.
Industrial Press Feed
Delivers over 11000 N at full pressure to index steel plate or heavy tooling into stamping presses, with sensor confirmation at stroke ends.
Large Valve Actuation
Operates high-torque butterfly or ball valves in processing plants, where the trunnion mount allows the cylinder to pivot as the valve cycles.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X850STC the Right Cylinder?
Select the SC125 when your application requires force in the 6136 N (at 0.5 MPa) to 11045 N (at 0.9 MPa) range. If you need less force, stepping down to the SC100 bore provides 3927 N at 0.5 MPa. For an 850 mm stroke, ensure the rod is protected from side loading; use an external guide or linear bearing to prevent rod bending and premature seal wear. For a direct replacement, match the 125 mm bore, 850 mm stroke, PT port thread, centre trunnion (TC) mounting, and the built-in magnet (-S) feature.
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 SC125X850STC FAQ
At 0.5 MPa, the push force is 6136 N and pull force is 5734 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 11045 N. The theoretical maximum at 1.0 MPa is 1251 kgf.
No. The SC series is a tie-rod cylinder that is shorter than an ISO 15552 cylinder and is not dimensionally interchangeable. For large bores (125-250 mm), it is classified as ISO 6430 class. It will only directly replace another AirTAC SC125 tie-rod cylinder with matching stroke, port thread, trunnion mount, and magnet option.
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