Airtac SC50 Standard Cylinder SC50X25H
The AirTAC Airtac SC50 Standard Cylinder SC50X25H is a genuine double-acting standard air cylinder with a Ø50mm bore and 25mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke25 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X25H
The SC50X25H is a short-stroke double-acting tie-rod cylinder built for hot environments, using Viton (FKM) seals that shift the operating temperature range to 0–150 °C. With a 50 mm bore and 25 mm stroke, it delivers 982 N of push force at 0.5 MPa and reaches 1767 N at the maximum operating pressure of 0.9 MPa.
This model uses a 20 mm diameter piston rod with M16x1.5 male threads and PT1/4 port connections. The compact body length A is 150 mm, giving a total extended length of just 175 mm. Adjustable air cushioning at both ends decelerates the piston smoothly over a 21 mm cushion length.
Airtac SC50 Standard Cylinder SC50X25H Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X25H |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 25 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 SC50X25H
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×25 | 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 SC50X25H Is Used
Hot Press & Mould Clamping
The Viton seals allow the SC50X25H to operate reliably at temperatures up to 150 °C, making it suitable for short-stroke clamping and ejection in heated platen presses, thermoforming tools, and autoclave fixtures.
High-Temperature Part Ejection
With a 25 mm stroke and 982 N push at 0.5 MPa, this cylinder is ideal for ejecting small hot parts from injection moulds or die-cast tools where ambient heat would degrade standard TPU seals.
Sterilisation & Autoclave Actuation
The FKM seal material withstands repeated steam sterilisation cycles. Use this 50 mm bore actuator for valve positioning or door latching inside clean-in-place systems and laboratory autoclaves.
Is the Airtac SC50 Standard Cylinder SC50X25H the Right Cylinder?
For applications needing slightly more force at the same pressure, step up to the 63 mm bore SC63 series, which provides 1559 N push at 0.5 MPa. If a shorter overall length is acceptable and force can be reduced, the 40 mm bore SC40 delivers 628 N at 0.5 MPa. When replacing an existing cylinder, match five points: 50 mm bore, 25 mm stroke, PT1/4 port thread, basic mounting (no bracket), and the Viton seal designation (H suffix).
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 SC50X25H FAQ
At 0.7 MPa supply pressure, the SC50X25H double-acting cylinder generates a theoretical push force of 1374 N. The pull force on the return stroke is 825 N at 0.5 MPa, reflecting the area reduction from the 20 mm piston rod.
Yes, the SC50X25H shares identical bore, stroke, rod thread (M16x1.5), and PT1/4 port dimensions with the standard TPU-seal SC50X25. The only difference is the Viton seal material, which extends the temperature rating to 0–150 °C. Ensure your application's temperature and chemical exposure match the FKM specification.
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