The AirTAC Airtac SC40 Standard Cylinder SC40X390S is a genuine double-acting standard air cylinder with a Ø40mm bore and 390mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X390S is a double-acting single-rod pneumatic cylinder with a 40 mm bore and a 390 mm stroke, delivering a push force of 628 N at 0.5 MPa (up to 1130 N at 0.9 MPa). Its 16 mm diameter piston rod and 21 mm adjustable air cushion provide reliable deceleration for mid-range linear tasks.
The built-in magnet (denoted by the -S suffix) allows CMSG, DMSG, or EMSG reed and solid-state sensors to clamp directly onto the tie-rod barrel, enabling precise end-of-stroke or mid-stroke position sensing without external brackets. The body length A is 142 mm, giving a total extended length of approximately 532 mm.
| Model | Airtac SC40 Standard Cylinder SC40X390S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 390 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.
| 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.
| SC | Standard tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×390 | 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.
The 390 mm stroke and 628 N push force at 0.5 MPa efficiently actuates diverter arms on packaging and assembly conveyors, with the built-in magnet confirming gate position.
Delivers consistent 1130 N clamping force at 0.9 MPa for CNC or welding jigs, while the -S magnet signals 'clamped' status to the machine controller.
Ideal for pushing cartons or totes off a line onto a gravity roller spur. The adjustable cushion absorbs impact at the end of the 390 mm push stroke, reducing noise and vibration.
For applications needing slightly more force, consider stepping up to the 50 mm bore SC50 series, which provides 982 N push at 0.5 MPa. If a shorter, more compact cylinder is acceptable, the 32 mm bore SC32 offers 402 N at the same pressure. Always match replacement cylinders on bore, stroke, PT port thread, and the -S magnet option.
At 390 mm of stroke, ensure side loads are minimized; the 16 mm rod can experience bending under off-axis forces. For guided linear motion, pair this cylinder with an external guide rail or consider a guided cylinder assembly to protect the rod bearings and seals from premature wear.
Quick checklist
At the standard operating pressure of 0.7 MPa, the push force is 879 N and the pull force is 528 N. The maximum push force at 0.9 MPa is 1130 N. These values are based on the 40 mm bore and 16 mm rod diameter.
Yes, if your existing cylinder is an AirTAC SC series (or a compatible tie-rod design) with a 40 mm bore, 390 mm stroke, PT1/4 port, and a built-in magnet for sensors. This is a tie-rod cylinder and is not dimensionally interchangeable with ISO 15552 profile cylinders.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.