Airtac AIRTAC SC125-160 Standard Cylinder SC125X50
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X50 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 SC125X50
The SC125X50 is a double-acting pneumatic cylinder delivering 6136 N of push force at 0.5 MPa, rising to 11045 N at the maximum operating pressure of 0.9 MPa. Its 50 mm stroke and large 125 mm bore make it ideal for compact clamping, pressing, and lifting stations where high force is needed in a short linear movement.
This model features a 32 mm piston rod with M27x2 male threads and PT1/2 port connections. The body length A is 203 mm, giving a total extended length of approximately 253 mm. An adjustable air cushion decelerates the piston over the final 28 mm of stroke to reduce end-cap impact, and the standard TPU seals provide reliable operation from -20 to +70 °C.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X50 Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X50 |
|---|---|
| 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 SC125X50
| 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 SC125X50 Is Used
Heavy-Duty Clamping
Generates over 6000 N at standard line pressure to securely hold large weldments or castings during machining and assembly processes.
Short-Stroke Press
Ideal for a compact 50 mm punch or forming station where the 11045 N maximum thrust at 0.9 MPa provides ample power for blanking or coining.
Material Lift Gate
Powers a high-force lift gate or diverter on a heavy-payload conveyor, using the short stroke to quickly raise or lower a transfer mechanism.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X50 the Right Cylinder?
For applications needing slightly less force, the 100 mm bore SC100 series provides 3927 N at 0.5 MPa. If a longer stroke is required, the SC125 bore supports standard strokes up to 1500 mm. This cylinder is an ISO 6430 class tie-rod design.
When replacing an existing cylinder, match five key points: the 125 mm bore, 50 mm stroke, PT1/2 port thread, basic (no bracket) mounting, and the absence of a built-in magnet. For side-load applications, even on short strokes, an external guide rail is recommended to protect the rod bearing from bending moments.
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 SC125X50 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 at 1.0 MPa is 1251 kgf.
No. The SC125X50 is a double-acting cylinder and does not lock or hold position when air pressure is exhausted. If load holding is required in a power-off state, you must add an external rod brake, a mechanical lock, or a pilot-operated check valve.
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