The AirTAC Airtac SC40 Standard Cylinder SC40X640S is a genuine double-acting standard air cylinder with a Ø40mm bore and 640mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X640S is a double-acting single-rod pneumatic cylinder delivering 628 N of push force and 528 N of pull force at 0.5 MPa. Its 40 mm bore houses a 16 mm diameter piston rod with M12x1.25 male threads, and the 640 mm stroke is well within the 1200 mm maximum standard stroke for this bore size.
This model includes a built-in magnet (-S suffix), allowing easy mounting of CMSG, DMSG, or EMSG reed and solid-state sensors directly onto the tie-rod barrel for contactless position sensing. The adjustable air cushion (21 mm length) decelerates the piston near stroke end, reducing impact and noise. Operating pressure ranges from 0.15 to 1.0 MPa with filtered air.
| Model | Airtac SC40 Standard Cylinder SC40X640S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 640 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. |
| ×640 | 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 640 mm stroke and magnetic piston sensing make this cylinder ideal for actuating diverter gates on conveyor lines, providing reliable end-of-stroke confirmation to the PLC.
Delivers consistent 628 N clamping force for medium-duty part fixturing. The built-in magnet allows sensor feedback to verify clamp position before machining or welding cycles begin.
With a long 640 mm reach, it pushes cartons or trays onto pallets. The adjustable cushion protects the cylinder and product from hard end-of-stroke impacts during high-cycle operation.
Select the SC40 when your application needs roughly 628 N of force at standard plant pressure. If you require more force, step up to the SC50 bore (982 N push at 0.5 MPa); for a lighter, more compact solution, the SC32 delivers 402 N. At a 640 mm stroke, the 16 mm rod is relatively slender—ensure side loads are minimal or guide the load externally to prevent rod bending and premature bearing wear.
For direct replacement, match five attributes: 40 mm bore, 640 mm stroke, PT1/4 port thread, the built-in magnet (-S), and the basic (no bracket) mounting configuration. This is a tie-rod cylinder and is not dimensionally interchangeable with ISO 15552 profile cylinders.
Quick checklist
At 0.5 MPa, the push force is 628 N and the pull force is 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.
No. The SC series is a tie-rod cylinder with a shorter body length than an ISO 15552 cylinder (body length A is 142 mm). Use only AirTAC SC-specific mounting accessories, such as the foot mount F-SC40LB or flange F-SC40FA. The built-in magnet requires CMSG/DMSG/EMSG sensors.
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