Airtac SC50 Standard Cylinder SC50X120STC
The AirTAC Airtac SC50 Standard Cylinder SC50X120STC is a genuine double-acting standard air cylinder with a Ø50mm bore and 120mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke120 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X120STC
The SC50X120STC is a double-acting pneumatic cylinder with a 50 mm bore and 120 mm stroke, delivering a push force of 982 N at 0.5 MPa and up to 1767 N at the maximum operating pressure of 0.9 MPa. This model features a 20 mm diameter piston rod with an M16x1.5 male thread and PT1/4 port connections, making it a robust choice for medium-force linear actuation tasks.
Equipped with a built-in magnet (suffix -S) and a centre trunnion mount (suffix -TC), this cylinder is ready for sensor feedback and pivoting applications. The trunnion assembly, including the TCM1 bracket, allows the cylinder body to swing, accommodating angular motion in the driven load. The standard TPU seals provide reliable operation within a temperature range of -20 to +70 °C.
Airtac SC50 Standard Cylinder SC50X120STC Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X120STC |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 120 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 SC50X120STC
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×120 | 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 SC50X120STC Is Used
Part Diverter Gates
The centre trunnion mount allows the cylinder to pivot, making it ideal for actuating diverter gates on conveyor lines where the cylinder body must swing through an arc.
Clamping & Fixturing
With 982 N of force at 0.5 MPa, this cylinder provides ample clamping power for medium-duty CNC fixtures and welding jigs, with a magnetic piston for end-of-stroke confirmation.
Linkage Actuation
The TC trunnion mount is purpose-built for driving pivoting linkages on packaging or assembly machinery, absorbing the side loads created by the swinging mechanism.
Is the Airtac SC50 Standard Cylinder SC50X120STC the Right Cylinder?
For applications requiring slightly less force, consider stepping down to the 40 mm bore SC40 series, which provides 628 N of push force at 0.5 MPa. If your load demands more power, the 63 mm bore SC63 series offers a significant jump to 1559 N at the same pressure. Always ensure the cylinder is sized with a margin above the actual moving load for reliable actuation.
This SC50X120STC is a direct replacement only for another AirTAC SC50 tie-rod cylinder of the same 120 mm stroke, PT1/4 ports, centre trunnion (TC) mount, and built-in magnet. The 120 mm stroke is well within the standard range, so no special side-load considerations are required beyond normal alignment practices.
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 SC50X120STC FAQ
At the standard operating pressure of 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, the push force increases to 1767 N.
No. The AirTAC SC series is a tie-rod cylinder that is shorter in overall length than a comparable ISO 15552 profile cylinder. It is not dimensionally interchangeable with ISO 15552 mounts. It should only replace another AirTAC SC50 cylinder with identical bore, stroke, and TC trunnion mounting.
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