Airtac SC50 Standard Cylinder SC50X400
The AirTAC Airtac SC50 Standard Cylinder SC50X400 is a genuine double-acting standard air cylinder with a Ø50mm bore and 400mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke400 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X400
The SC50X400 is a double-acting tie-rod cylinder with a 50 mm bore and 400 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. Its 20 mm diameter piston rod and 21 mm adjustable air cushion provide reliable deceleration for mid-range linear tasks.
With a body length A of 150 mm, the total extended length reaches approximately 550 mm, fitting well into machine frames that need a compact retracted footprint. The PT1/4 port and M16x1.5 rod thread are standard across the 50 mm bore SC family, simplifying valve and knuckle accessory selection.
Airtac SC50 Standard Cylinder SC50X400 Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X400 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 400 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 SC50X400
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×400 | 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 SC50X400 Is Used
Package Diverting
Actuates a diverter gate on a conveyor line, using the 400 mm stroke to push cartons onto a secondary lane with consistent force at 0.5-0.7 MPa.
Clamping & Fixturing
Provides the holding force for a welding or assembly fixture, with the adjustable cushion softening the end-of-stroke impact on the clamped part.
Hopper Door Control
Opens and closes a discharge gate on a seed or grain hopper, where the 982 N push force handles sticky or compacted material reliably.
Is the Airtac SC50 Standard Cylinder SC50X400 the Right Cylinder?
Choose the SC50 when the SC40's 628 N push force at 0.5 MPa is marginal; step up to the SC63 if your application exceeds 1374 N at 0.7 MPa. For this 400 mm stroke, ensure the rod is not subjected to side load—if the load is not guided externally, add an external linear guide or switch to a guided cylinder to prevent rod bending and premature bearing wear.
For a direct replacement, match five points: 50 mm bore, 400 mm stroke, PT port thread, basic (no bracket) mounting, and no magnet. This model uses the default TPU seal for standard -20 to +70 °C operation.
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 SC50X400 FAQ
At 0.5 MPa, push force is 982 N and pull force is 825 N. At 0.7 MPa, push force rises to 1374 N. The maximum operating push force at 0.9 MPa is 1767 N.
Yes, if the bore, stroke, and port thread (PT) match. This is a basic model without a mounting bracket or magnet. If your old unit had an LB foot mount or -S magnet, you must order the F-SC50LB bracket or the SC50X400-S variant separately.
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