Airtac SC50 Standard Cylinder SC50X425
The AirTAC SC50 Standard Cylinder SC50X425 is a genuine double-acting standard air cylinder with a Ø50mm bore and 425mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke425 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 SC50X425
The AirTAC SC50X425 is a double-acting tie-rod cylinder 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. With a 50 mm bore and a 425 mm stroke, it features a 20 mm diameter piston rod and an M16x1.5 rod thread for secure tooling attachment.
This model includes a 21 mm adjustable air cushion at each end to decelerate the piston smoothly, reducing end-of-stroke impact. The body length A is 150 mm, giving a total extended length of approximately 575 mm. It operates on filtered air from 0.15 to 1.0 MPa with a speed range of 30-800 mm/s, using standard PT1/4 ports and TPU seals rated for -20 to +70 °C.
Airtac SC50 Standard Cylinder SC50X425 Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X425 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 425 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 SC50X425
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×425 | 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 SC50X425 Is Used
Material Handling Gates
The 425 mm stroke and 982 N push force at 0.5 MPa are well-suited for operating diverter gates and stops on conveyor lines, providing reliable part sorting and lane control.
Automated Clamping
Delivers consistent clamping force for medium-duty CNC fixtures and welding jigs. The adjustable cushion prevents vibration transfer to the workpiece at the end of the stroke.
Agricultural Equipment Actuation
Operates chutes, hopper doors, and baling press mechanisms. The tie-rod construction allows for field servicing, and the TPU seals handle dusty farm environments within the -20 to +70 °C range.
Is the Airtac SC50 Standard Cylinder SC50X425 the Right Cylinder?
For applications needing more force, stepping up to the 63 mm bore SC63 series provides 1559 N of push force at the same 0.5 MPa pressure. If a shorter overall length is required, the 40 mm bore SC40 series offers 628 N at 0.5 MPa. This 425 mm stroke is within the 1200 mm maximum standard stroke for the 50 mm bore.
When replacing an existing cylinder, match all five key points: 50 mm bore, 425 mm stroke, PT1/4 port thread, basic mounting (no accessory brackets), and the absence of a magnet. The SC series is a tie-rod design and is not dimensionally interchangeable with ISO 15552 profile cylinders. For strokes over 300 mm, ensure the rod is guided externally if significant side loads are present, as the unsupported 20 mm rod can be subject to bending.
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 SC50X425 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 increases to 1767 N. The theoretical maximum force at 1.0 MPa is 200 kgf.
No. The SC50X425 is a double-acting cylinder and will not hold its position if air pressure is lost or the directional valve is centered. The adjustable air cushion only decelerates the piston at the end of stroke; it is not a locking or holding brake. To hold a load safely, you must add an external rod lock or a pilot-operated check valve.
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