Airtac SC50 Standard Cylinder SC50X550H
The AirTAC SC50 Standard Cylinder SC50X550H is a genuine double-acting standard air cylinder with a Ø50mm bore and 550mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke550 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SC50 Standard Cylinder SC50X550H
The SC50X550H is a double-acting pneumatic cylinder with a 50 mm bore and a 550 mm stroke, equipped with high-temperature Viton (FKM) seals that shift the operating range from the standard -20–+70 °C up to 0–+150 °C. It delivers a theoretical push force of 1767 N at the maximum operating pressure of 0.9 MPa, making it a solid mid-range actuator for hot-environment automation.
This tie-rod cylinder uses a 20 mm diameter piston rod with an M16x1.5 male thread and PT1/4 ports. The body length (dimension A) is 150 mm, giving a total extended length of approximately 700 mm. Its adjustable air cushion (21 mm length) decelerates the piston at end-of-stroke to reduce impact, but it does not lock the load—external holding is required if pressure is lost.
Airtac SC50 Standard Cylinder SC50X550H Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X550H |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 550 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 SC50X550H
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×550 | 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 SC50X550H Is Used
Hot-Zone Actuation
Viton seals allow the SC50X550H to operate continuously in ambient temperatures up to 150°C, making it suitable for actuators near ovens, autoclaves, or foundry equipment where standard seals would degrade.
High-Temp Material Handling
With 1767 N of push force at 0.9 MPa and a 550 mm stroke, this cylinder can push or divert hot products on conveyor lines in glass tempering or ceramics manufacturing.
Mould Clamping
The 50 mm bore provides a stable 982 N of force at 0.5 MPa for low-pressure mould closing or holding in rubber and plastic injection tools that run at elevated temperatures.
Is the Airtac SC50 Standard Cylinder SC50X550H the Right Cylinder?
For a step down in force, the 40 mm bore SC40 series provides 879 N at 0.7 MPa; for more power, the 63 mm bore SC63 delivers 2182 N at the same pressure. At a 550 mm stroke, the 20 mm rod is relatively slender—avoid direct side loads or use an external linear guide to prevent rod bending and premature bearing wear.
When replacing this cylinder, match five key points: 50 mm bore, 550 mm stroke, PT port thread, basic (no accessory) mounting, and no built-in magnet. The Viton seal variant is specifically for applications above 70 °C; do not substitute a standard TPU seal model in high-temperature service.
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 SC50X550H FAQ
At 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 reaches 1767 N. The theoretical maximum at 1.0 MPa is 200 kgf.
No. The SC50X550H is a double-acting cylinder and will drift or drop if pressure is exhausted or the directional valve is centered. The adjustable air cushion only decelerates the piston at stroke end. To hold a position without live pressure, you must add a pilot-operated check valve or an external rod brake.
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