Airtac SC50 Standard Cylinder SC50X125STC
The AirTAC Airtac SC50 Standard Cylinder SC50X125STC 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 SC50X125STC
The AirTAC SC50X125STC is a tie-rod double-acting cylinder delivering 982 N of push force at 0.5 MPa and up to 1767 N at the maximum operating pressure of 0.9 MPa. Its 125 mm stroke suits medium-travel clamping, pressing, and material-handling tasks where a compact body length is beneficial.
This model features a built-in magnet for mounting CMSG/DMSG/EMSG sensors directly on the barrel and is supplied with a centre trunnion (TC) mount including the TCM1 bracket, allowing the cylinder to pivot for swinging loads. The 20 mm diameter piston rod and PT1/4 ports ensure robust, reliable pneumatic performance.
Airtac SC50 Standard Cylinder SC50X125STC Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X125STC |
|---|---|
| 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 SC50X125STC
| 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 SC50X125STC Is Used
Part Transfer
Pivots to move parts between conveyor lines, with the 125 mm stroke providing the necessary linear travel and sensors confirming position.
Clamping Fixtures
Applies 1767 N of clamping force at 0.9 MPa. The trunnion mount allows the cylinder body to self-align, preventing rod bending under load.
Automated Assembly
Integrates into machine frames where a pivoting pneumatic actuator is needed for pressing or ejecting components, with sensor feedback for cycle control.
Is the Airtac SC50 Standard Cylinder SC50X125STC the Right Cylinder?
For applications needing less force, consider stepping down to the 40 mm bore which provides 628 N at 0.5 MPa. If higher force is required, the 63 mm bore offers 1559 N. The centre trunnion mount (F-SC50TC) is ideal for applications where the cylinder must pivot during its stroke. When replacing this unit, match the 50 mm bore, 125 mm stroke, PT1/4 port thread, built-in magnet, and TC mount to ensure full compatibility.
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 SC50X125STC FAQ
At 0.5 MPa, the push force is 982 N and the pull force is 825 N. The maximum push force at the 0.9 MPa operating limit is 1767 N.
To ensure a direct drop-in replacement, match the 50 mm bore, 125 mm stroke, PT1/4 port thread, built-in magnet (-S), and centre trunnion (TC) mount with TCM1 bracket. This is a tie-rod cylinder and is not dimensionally interchangeable with ISO 15552 profile cylinders.
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