Airtac SC40 Standard Cylinder SC40X125SFA
The AirTAC SC40 Standard Cylinder SC40X125SFA is a genuine double-acting standard air cylinder with a Ø40mm 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.
- BoreØ40 mm
- Stroke125 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- 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 SC40 Standard Cylinder SC40X125SFA
The SC40X125SFA is a double-acting pneumatic cylinder delivering 628 N of push force at 0.5 MPa, making it a solid mid-range actuator for general factory automation. This model features a 40 mm bore, a 125 mm stroke, and a 16 mm diameter piston rod with M12x1.25 male threads for tooling attachment.
It is configured with a built-in magnet (-S suffix) for direct mounting of CMSG/DMSG/EMSG sensors, and an FA front rectangular flange (F-SC40FA) for rigid panel mounting on the rod side. The adjustable air cushion at each end decelerates the piston smoothly, protecting end caps during high-cycle operation.
Airtac SC40 Standard Cylinder SC40X125SFA Technical Specifications
| Model | Airtac SC40 Standard Cylinder SC40X125SFA |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (approx.) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SC40 Standard Cylinder SC40X125SFA
| SC | Standard tie-rod cylinder series. |
|---|---|
| 40 | 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 SC40 Standard Cylinder SC40X125SFA Is Used
Pick-and-Place Gantry
The 125 mm stroke and front-flange mount suit vertical Z-axis modules on small gantry robots, where the built-in magnet confirms end-of-stroke via solid-state sensors.
Diverter Gate Actuation
With 628 N of push force at 0.5 MPa, this cylinder reliably shifts light to medium product diverters on packaging conveyors, aided by the adjustable cushion for quiet gate stopping.
Clamping & Press Fixtures
The FA flange bolts directly to a fixture plate, providing a stable, guided push for clamping parts during assembly or light press-fit operations at up to 879 N at 0.7 MPa.
Is the Airtac SC40 Standard Cylinder SC40X125SFA the Right Cylinder?
Choose the SC40 when your application needs between 400 and 900 N of force at typical plant air pressures; the 40 mm bore bridges the gap between the lighter 32 mm (402 N at 0.5 MPa) and the heavier 50 mm (982 N at 0.5 MPa). For strokes longer than 300 mm, consider an external guide rail to protect the 16 mm rod from side-load bending, as tie-rod cylinders are designed for axial thrust, not transverse forces.
To replace an existing unit, match five points exactly: 40 mm bore, 125 mm stroke, PT port thread, FA front-flange mounting, and the -S magnet option for sensor compatibility. This ensures the same envelope, port location, and control interface without re-engineering the machine.
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 SC40 Standard Cylinder SC40X125SFA FAQ
At 0.5 MPa the cylinder pushes with 628 N and pulls with 528 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 1130 N. The theoretical maximum at 1.0 MPa is 128 kgf.
Yes. The -S suffix indicates a built-in magnet inside the piston, allowing AirTAC CMSG (reed) or DMSG/EMSG (solid-state) sensors to clamp directly onto the tie-rod barrel for non-contact position sensing.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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