Airtac SC50 Standard Cylinder SC50X125SFA
The AirTAC Airtac SC50 Standard Cylinder SC50X125SFA is a genuine double-acting standard air cylinder with a Ø50mm bore and 125mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke125 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X125SFA
The SC50X125SFA is a double-acting single-rod pneumatic cylinder delivering 982 N of push force at 0.5 MPa (1374 N at 0.7 MPa), making it a strong mid-range actuator for industrial automation. This model features a 20 mm diameter piston rod, PT1/4 ports, and a 21 mm adjustable air cushion at each end to decelerate the piston smoothly.
Configured with a built-in magnet (-S) and a front rectangular flange mount (FA), the cylinder body measures 150 mm (dimension A) plus the 125 mm stroke for an extended length of 275 mm. The front flange (F-SC50FA) allows rigid panel mounting on the rod side, while the magnet supports CMSG/DMSG/EMSG sensors for reliable end-of-stroke detection.
Airtac SC50 Standard Cylinder SC50X125SFA Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X125SFA |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 125 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 SC50X125SFA
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×125 | 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 SC50X125SFA Is Used
Clamping & Fixturing
The 982 N push force at 0.5 MPa and front flange mount make this cylinder ideal for rigidly mounted workpiece clamping stations, where the magnet sensors confirm clamp/unclamp status.
Part Stops & Diverters
Deploy the SC50X125SFA as a pneumatic stop gate on a conveyor line. The 125 mm stroke provides ample travel to raise and lower a stop blade, with sensor feedback for line control.
Press & Assembly Tools
Used in small pneumatic presses or riveting tools, this cylinder supplies a controlled 1374 N at 0.7 MPa. The adjustable cushioning reduces impact noise and extends tooling life.
Is the Airtac SC50 Standard Cylinder SC50X125SFA the Right Cylinder?
The 50 mm bore SC series provides 982 N at 0.5 MPa. If your application needs more force, stepping up to the 63 mm bore offers 1559 N at the same pressure; for a lighter, more compact solution, the 40 mm bore delivers 628 N. Always match the bore, 125 mm stroke, PT1/4 port thread, front flange mounting, and the -S magnet sensor option when replacing an existing unit.
For this 125 mm stroke, side loads are generally manageable, but any off-axis force on the 20 mm rod can cause bearing wear. If the load is not guided externally, consider adding a guide rod or switching to a guided cylinder to protect the rod bearing and seal.
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 SC50X125SFA FAQ
At the standard 0.5 MPa operating pressure, the push force is 982 N and the pull force is 825 N. At 0.7 MPa, push force increases to 1374 N. The maximum operating force at 0.9 MPa is 1767 N.
No. The AirTAC SC series is a tie-rod cylinder and is shorter than an ISO 15552 profile cylinder. It is not dimensionally interchangeable with ISO 15552 mounts. For a direct replacement, match another AirTAC SC50 tie-rod cylinder with the same bore, stroke, PT ports, front flange (FA) mount, and built-in magnet.
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