Airtac SC50 Standard Cylinder SC50X425STC
The AirTAC SC50 Standard Cylinder SC50X425STC 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 SC50X425STC
The SC50X425STC is a double-acting pneumatic cylinder delivering 982 N of push force at 0.5 MPa and up to 1767 N at 0.9 MPa, making it a capable mid-bore actuator for consistent linear tasks. With a 425 mm stroke, a 20 mm diameter piston rod, and a 21 mm adjustable air cushion at each end, it provides smooth deceleration for moderate-speed automation.
This model is factory-configured with a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors, and a centre trunnion (TC) mount that allows the cylinder to pivot during operation. The trunnion is supplied with the TCM1 bracket, and the assembly uses the standard PT port thread and TPU seals for reliable performance from -20 to +70 °C.
Airtac SC50 Standard Cylinder SC50X425STC Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X425STC |
|---|---|
| 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 SC50X425STC
| 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 SC50X425STC Is Used
Part Orientation on Conveyors
The 425 mm stroke and pivoting trunnion mount allow this cylinder to push or rotate parts across a wide conveyor, with magnetic sensors confirming full extension and retraction for reliable sorting.
Clamping in Welding Fixtures
Delivering 1767 N of clamping force at 0.9 MPa, this cylinder secures components in automated welding cells. The centre trunnion lets it swing clear for easy part loading and unloading.
Grain Chute Diverter
Mounted on a trunnion, the cylinder pivots a diverter gate to direct material flow. The magnetic piston provides end-of-stroke feedback to a PLC, ensuring the gate is fully open or closed.
Is the Airtac SC50 Standard Cylinder SC50X425STC the Right Cylinder?
For applications needing more force, stepping up to a 63 mm bore provides 1559 N of push at 0.5 MPa. If a shorter, more compact actuator is sufficient, the 40 mm bore offers 628 N at the same pressure. The 425 mm stroke is within the 1200 mm maximum standard stroke for this 50 mm bore.
When replacing this cylinder, match five key points: the 50 mm bore, 425 mm stroke, PT port thread, the TC centre trunnion mounting (part F-SC50TC), and the -S magnetic piston for sensor compatibility. For this stroke length, ensure the rod is not subjected to significant side loading; if lateral forces are present, use an external guide rail 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 SC50X425STC FAQ
At the standard operating pressure of 0.7 MPa, the push force is 1374 N and the pull force is 825 N. The maximum push force at 0.9 MPa is 1767 N.
Yes. The -S suffix in the model code means it has a built-in magnet. You can directly clamp compatible CMSG (reed) or DMSG/EMSG (solid-state) sensors onto the barrel to detect piston position without any additional brackets.
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