Airtac SC50 Standard Cylinder SC50X120H
The AirTAC Airtac SC50 Standard Cylinder SC50X120H 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 SC50X120H
The AirTAC SC50X120H is a double-acting tie-rod cylinder engineered for high-temperature duty, using Viton (FKM) seals to reliably operate from 0 to +150 °C. With a 50 mm bore and 120 mm stroke, it generates a push force of 982 N at 0.5 MPa and up to 1767 N at the maximum operating pressure of 0.9 MPa, making it a strong mid-range actuator for hot environments.
This model features a 20 mm diameter piston rod with M16x1.5 male threads and PT1/4 port connections. The cylinder body length A is 150 mm, giving a total extended length of approximately 270 mm. Its adjustable air cushion (21 mm long) decelerates the piston smoothly at stroke end, protecting end caps from impact in high-cycle applications.
Airtac SC50 Standard Cylinder SC50X120H Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X120H |
|---|---|
| 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 SC50X120H
| 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 SC50X120H Is Used
Furnace & Oven Door Actuation
The Viton seals allow the SC50X120H to operate continuously in high-temperature environments up to 150 °C, making it ideal for opening and closing doors on industrial furnaces, drying ovens, and autoclaves.
Hot Mould Clamping
Delivering 1767 N of force at 0.9 MPa, this cylinder provides consistent clamping pressure for injection moulds and thermoforming tools where mould temperatures are elevated and standard seals would degrade.
Textile & Dyeing Machinery
With a 120 mm stroke and robust 20 mm rod, it handles the push-pull actuation of rollers and tensioners in textile dyeing and finishing lines, resisting the heat and chemical vapours common in these processes.
Is the Airtac SC50 Standard Cylinder SC50X120H the Right Cylinder?
Select the SC50X120H when your application demands a 50 mm bore cylinder that can withstand ambient temperatures up to 150 °C. If your force requirement is lower at the same pressure, consider stepping down to the 40 mm bore (628 N push at 0.5 MPa); for higher force, the 63 mm bore delivers 1559 N at 0.5 MPa. The 120 mm stroke is a standard length, well within the 1200 mm maximum for this bore size.
For a drop-in replacement, match five key points: 50 mm bore, 120 mm stroke, PT1/4 ports, the Viton (H) seal material for high-temperature compatibility, and the basic mounting configuration (no built-in magnet or accessory brackets). Always verify that the replacement cylinder’s rod thread (M16x1.5) and cushion style match your existing setup.
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 SC50X120H FAQ
At 0.5 MPa, the push force is 982 N and the pull force is 825 N. At 0.7 MPa, push force increases to 1374 N. The maximum push force at the 0.9 MPa operating limit is 1767 N. These values assume a clean, filtered air supply and a static piston.
Yes, dimensionally it is identical to an SC50X120 with standard seals, but the H suffix specifies Viton seals for a 0 to +150 °C operating range. Only use it as a replacement if your application actually requires high-temperature resistance, or if you are upgrading a standard cylinder to handle higher ambient heat.
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