Airtac SC50 Standard Cylinder SC50X135H
The AirTAC Airtac SC50 Standard Cylinder SC50X135H is a genuine double-acting standard air cylinder with a Ø50mm bore and 135mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke135 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X135H
The SC50X135H is a double-acting tie-rod cylinder with a 50 mm bore and 135 mm stroke, equipped with high-temperature Viton (FKM) seals. This seal variant shifts the operating temperature range to 0 to +150 °C, making it suitable for hot environments where standard TPU seals would degrade. At 0.5 MPa air pressure, the cylinder pushes with 982 N and pulls with 825 N, placing it in a force class suited for medium-duty clamping and pressing tasks.
With a 20 mm diameter piston rod and M16x1.5 rod thread, the SC50X135H provides robust linear guidance for the 135 mm stroke. The body length A measures 150 mm, giving a total extended length of approximately 285 mm. Adjustable pneumatic cushioning at both ends decelerates the piston smoothly, protecting end caps from impact. This genuine AirTAC cylinder is built for reliable high-cycle performance in demanding thermal conditions.
Airtac SC50 Standard Cylinder SC50X135H Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X135H |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 135 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 SC50X135H
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×135 | 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 SC50X135H Is Used
Hot Press & Molding
Viton seals allow the SC50X135H to operate continuously at up to 150 °C, making it ideal for actuating platens in heated laminating presses, thermoforming tools, and rubber molding machines where standard cylinders would fail.
Foundry & Kiln Actuation
Deploy this cylinder for damper control, gate actuation, or part ejection near furnaces and kilns. The 982 N push force at 0.5 MPa reliably moves medium-mass loads in high-ambient-temperature zones.
Autoclave & Sterilization
With FKM seals resistant to steam and high heat, the SC50X135H suits autoclave door locking or internal material handling where the cylinder is exposed to repeated sterilization cycles up to 150 °C.
Is the Airtac SC50 Standard Cylinder SC50X135H the Right Cylinder?
Select the SC50X135H when your application needs a 50 mm bore force profile—982 N push at 0.5 MPa—and the process temperature exceeds the standard 70 °C limit. If you need higher force, stepping up to the 63 mm bore delivers 1559 N push at the same pressure; for a lighter, more compact solution, the 40 mm bore provides 628 N. The 135 mm stroke is well within the 1200 mm maximum standard stroke for this bore, so no special stroke approval is needed.
For a direct replacement, match five key points: bore (50 mm), stroke (135 mm), PT port thread, basic mounting (no bracket), and the absence of a magnet. The Viton seal is critical here—do not substitute a standard TPU or NBR sealed cylinder if the ambient temperature exceeds 70 °C. If the rod experiences side loads, even at this moderate stroke, consider an external guide or a guided cylinder to prevent rod bending and premature bearing wear.
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 SC50X135H FAQ
At 0.7 MPa operating pressure, the SC50X135H generates a push force of 1374 N and a pull force of 1155 N (calculated from the 825 N pull at 0.5 MPa). The maximum push force at the 0.9 MPa operating limit is 1767 N.
Yes, the SC50X135H is a direct dimensional and functional replacement for the standard SC50X135, with the same bore, stroke, port thread (PT), and mounting dimensions. The only difference is the Viton seal material, which extends the temperature rating from -20~+70 °C to 0~+150 °C, making it suitable for hotter environments.
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