Airtac AIRTAC SC125-160 Standard Cylinder SC125X50STC
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X50STC is a genuine double-acting standard air cylinder with a Ø125mm bore and 50mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke50 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X50STC
The SC125X50STC is a double-acting pneumatic cylinder delivering 6136 N of push force at 0.5 MPa and up to 11045 N at 0.9 MPa, making it a robust actuator for heavy industrial tasks. Its 50 mm stroke is a standard length within the ISO 6430 class big-bore range, and the 32 mm piston rod with M27x2 thread provides excellent rigidity for short-stroke, high-force clamping or pressing.
This model comes configured with 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). The trunnion allows the cylinder body to pivot, absorbing misalignment in swinging or articulating load paths. With TPU seals and PT ports, it operates reliably from -20 to +70 °C.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X50STC Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X50STC |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 50 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 SC125X50STC
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×50 | 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 SC125X50STC Is Used
Heavy-Duty Clamping
The 11045 N thrust at 0.9 MPa securely locks heavy weldments or large workpieces in place during machining or assembly, with the trunnion mount allowing the cylinder to pivot into perfect alignment.
Die Cushion Systems
Delivers consistent, high-force resistance in metal stamping die cushions. The adjustable air cushion decelerates the 32 mm rod smoothly, and the built-in magnet provides end-of-stroke confirmation to the press controller.
Pivoting Gate or Diverter
The centre trunnion mount is ideal for actuating a heavy pivoting diverter gate on a conveyor line. The cylinder swings freely as it extends and retracts, handling the 6136 N push force needed to move large packages.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X50STC the Right Cylinder?
Choose the SC125 bore when your application needs between 6136 N (push at 0.5 MPa) and 11045 N (push at 0.9 MPa). If your force requirement is lower, stepping down to the SC100 bore provides 3927 N at 0.5 MPa in a lighter, more compact body. For a direct replacement, match five points: 125 mm bore, 50 mm stroke, PT port thread, centre trunnion (TC) mounting accessory, and the built-in magnet (-S) for sensor compatibility.
This 50 mm stroke is short and rigid, but for any stroke length, avoid side loading the rod directly. If lateral forces are present in the application, use an external linear guide or a guided cylinder to protect the rod bearing and piston 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 SC125X50STC FAQ
At the standard operating pressure of 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, the push force increases to 11045 N. The theoretical maximum at 1.0 MPa is 1251 kgf.
No. The SC series is a tie-rod cylinder and is physically shorter than an ISO 15552 profile cylinder, so it is not dimensionally interchangeable. It is a direct replacement only for another AirTAC SC or equivalent tie-rod cylinder matching the 125 mm bore, 50 mm stroke, PT ports, centre trunnion mount, and built-in magnet.
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