Airtac SC50 Standard Cylinder SC50X125S
The AirTAC Airtac SC50 Standard Cylinder SC50X125S is a genuine double-acting standard air cylinder with a Ø50mm bore and 125mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke125 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X125S
The AirTAC SC50X125S is a double-acting tie-rod cylinder delivering 982 N of push force at 0.5 MPa (1374 N at 0.7 MPa). With a 50 mm bore and 125 mm stroke, it uses a 20 mm diameter piston rod with M16x1.5 male threads and PT1/4 ports.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG reed and solid-state sensors to clamp directly onto the barrel for contactless position sensing. The adjustable air cushion (21 mm length) decelerates the piston at end-of-stroke to reduce impact, and the standard TPU seals suit operating temperatures from -20 to +70 °C.
Airtac SC50 Standard Cylinder SC50X125S Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X125S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (approx.) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SC50 Standard Cylinder SC50X125S
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×125 | 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 SC50 Standard Cylinder SC50X125S Is Used
Part Stops & Gates
The 982 N push force at 0.5 MPa is ideal for stopping or diverting medium-weight packages on conveyor lines, with sensor confirmation via the built-in magnet.
Clamping & Pressing
Delivers up to 1767 N at 0.9 MPa for holding workpieces in CNC fixtures or light assembly presses, where end-of-stroke sensing ensures cycle completion.
Sortation Pushers
The 125 mm stroke provides enough travel to push cartons off a belt sorter, and the magnetic piston lets DMSG sensors verify retract and extend positions.
Is the Airtac SC50 Standard Cylinder SC50X125S the Right Cylinder?
For higher force, step up to the SC63 bore (1559 N push at 0.5 MPa); for a more compact footprint, the SC40 offers 628 N. At 125 mm stroke, the SC50 rod is well-supported for axial loads, but any side load requires an external linear guide—this cylinder is not a guided actuator. When replacing, match five points: 50 mm bore, 125 mm stroke, PT1/4 port thread, the built-in magnet (-S), and the basic (no bracket) mounting style.
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 SC50 Standard Cylinder SC50X125S FAQ
At 0.5 MPa, the push force is 982 N and the pull force is 825 N. At the maximum operating pressure of 0.9 MPa, push force reaches 1767 N. The theoretical maximum at 1.0 MPa is 200 kgf.
No. The SC series is a tie-rod cylinder with a shorter body length (A=150 mm) than an equivalent ISO 15552 cylinder, so it is not dimensionally interchangeable. It replaces another AirTAC SC50 cylinder with matching bore, stroke, PT ports, and magnet option.
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