Airtac SC40 Standard Cylinder SC40X1390S
The AirTAC Airtac SC40 Standard Cylinder SC40X1390S is a genuine double-acting standard air cylinder with a Ø40mm bore and 1390mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ40 mm
- Stroke1390 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
About the Airtac SC40 Standard Cylinder SC40X1390S
The AirTAC SC40X1390S is a double-acting single-rod pneumatic cylinder with a 40 mm bore and an extended 1390 mm stroke, exceeding the standard 1200 mm maximum for this bore size. With a 16 mm piston rod and PT1/4 ports, it delivers 628 N of push force at 0.5 MPa and up to 1130 N at 0.9 MPa, making it a capable mid-bore actuator for long linear movements.
The built-in magnet (-S suffix) allows direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the tie-rod barrel for reliable end-of-stroke or mid-stroke position feedback. The cylinder body length A is 142 mm, giving a total extended length of approximately 1532 mm. Adjustable air cushioning decelerates the piston smoothly at both ends over a 21 mm cushion length.
Airtac SC40 Standard Cylinder SC40X1390S Technical Specifications
| Model | Airtac SC40 Standard Cylinder SC40X1390S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 1390 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 SC40X1390S
| SC | Standard tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×1390 | 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 SC40X1390S Is Used
Long-Stroke Material Transfer
The 1390 mm stroke moves parts between distant conveyor lines or workstations. The built-in magnet enables sensor-based positioning to confirm full extension and retraction in automated transfer systems.
Automated Gluing or Dispensing
Delivers a long, steady linear pass for adhesive beads or sealant application. Mid-stroke position sensing via DMSG sensors allows precise start/stop control of the dispensing head along the travel.
Vertical Hopper Door Actuation
Operates a tall hopper discharge gate or chute diverter. The 1130 N maximum push force at 0.9 MPa handles heavy granular material gates, while the adjustable cushion softens the impact at the end of the long travel.
Is the Airtac SC40 Standard Cylinder SC40X1390S the Right Cylinder?
Select the SC40 when your application needs a compact tie-rod cylinder with moderate force. If the 628 N push at 0.5 MPa is insufficient, stepping up to the SC50 bore provides 982 N under the same pressure. For strokes beyond 300 mm, especially the 1390 mm length here, external guide rails or a guided cylinder are strongly recommended to protect the 16 mm rod from bending under side loads.
For replacement, match five key points: 40 mm bore, 1390 mm stroke (non-standard), PT1/4 port thread, the built-in magnet (-S) for sensor compatibility, and the basic mounting configuration. This is a genuine AirTAC SC tie-rod cylinder, shorter than an ISO 15552 profile and not dimensionally interchangeable with those standards.
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 SC40X1390S FAQ
At 0.5 MPa the push force is 628 N (pull 528 N). At the standard 0.7 MPa supply, push force is 879 N. The maximum operating push force at 0.9 MPa is 1130 N. The theoretical maximum at 1.0 MPa is 128 kgf.
No, 1390 mm exceeds the 1200 mm maximum standard stroke for the 40 mm bore, making this a non-standard, made-to-order length. For any stroke over 300 mm, especially this length, you must use an external guide or a guided cylinder to prevent the 16 mm rod from bending under side load.
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