Airtac SC40 Standard Cylinder SC40X25STC
The AirTAC Airtac SC40 Standard Cylinder SC40X25STC is a genuine double-acting standard air cylinder with a Ø40mm bore and 25mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ40 mm
- Stroke25 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
About the Airtac SC40 Standard Cylinder SC40X25STC
The SC40X25STC is a double-acting AirTAC SC series tie-rod cylinder with a 40 mm bore and 25 mm stroke, delivering 628 N of push force at 0.5 MPa. This compact stroke model features a 16 mm diameter piston rod with M12x1.25 threads and an adjustable air cushion length of 21 mm, making it ideal for short, precise linear movements.
This variant includes a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors, and is supplied with a centre trunnion mount (TC) including the TCM1 bracket (F-SC40TC) for pivoting applications. The standard TPU seals provide reliable operation from -20 to +70 °C with PT1/4 port threads.
Airtac SC40 Standard Cylinder SC40X25STC Technical Specifications
| Model | Airtac SC40 Standard Cylinder SC40X25STC |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 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 SC40X25STC
| SC | Standard tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×25 | 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 SC40X25STC Is Used
Part Sorting Gates
The short 25 mm stroke and trunnion mount allow this cylinder to pivot as a diverter gate on small conveyor lines, directing lightweight parts with rapid, repeatable motion.
Clamping Fixtures
Ideal for light-duty clamping in CNC or assembly jigs, the 628 N push force securely holds workpieces while the magnetic piston enables end-of-stroke position feedback.
Linkage Actuation
The TC centre trunnion mount allows the cylinder to swing in a linkage mechanism, perfect for operating levers or flaps in packaging and processing equipment.
Is the Airtac SC40 Standard Cylinder SC40X25STC the Right Cylinder?
For applications requiring more force, consider stepping up to the 50 mm bore SC50 series, which offers 982 N of push force at 0.5 MPa. The centre trunnion mount makes this cylinder suitable for applications where the cylinder body needs to pivot during operation. When replacing an existing cylinder, ensure a 5-point match: 40 mm bore, 25 mm stroke, PT1/4 port thread, centre trunnion (TC) mounting, and the built-in magnet (-S) for sensor compatibility.
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 SC40X25STC FAQ
At 0.5 MPa, the push force is 628 N and the pull force is 528 N. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 1280 N. Always apply a safety factor for dynamic loads.
No. The SC series is a tie-rod cylinder with a shorter body length (A=142 mm) than an equivalent ISO 15552 profile cylinder, so dimensional interchangeability is not guaranteed. It is a direct replacement only for another AirTAC SC40 cylinder with matching bore, stroke, TC mount, and magnet option.
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