The AirTAC SC40 Standard Cylinder SC40X680S is a genuine double-acting standard air cylinder with a Ø40mm bore and 680mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X680S is a double-acting pneumatic cylinder with a 40 mm bore and a 680 mm stroke, built around a 16 mm diameter piston rod. At 0.5 MPa air pressure it generates 628 N pushing force and 528 N pulling force, rising to 1130 N push at the maximum operating pressure of 0.9 MPa.
This model includes a built-in magnet (-S suffix), so CMSG, DMSG, or EMSG reed and solid-state sensors can be clamped directly onto the tie-rod barrel for non-contact position sensing. The cylinder uses an adjustable air cushion (21 mm length) to decelerate the piston quietly at end of travel, and the PT1/4 port and M12x1.25 rod thread match standard AirTAC SC40 accessories.
| Model | Airtac SC40 Standard Cylinder SC40X680S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 680 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. |
| ×680 | 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 680 mm stroke and 628 N push force at 0.5 MPa suit medium-reach diverter gates on packaging conveyors. The built-in magnet lets CMSG sensors confirm gate position at each end of travel.
Pushes parts off a line or into a nest with 1130 N of force at 0.9 MPa. The 21 mm adjustable cushion softens the stop, protecting tooling and reducing noise in high-cycle automated cells.
Drives a sortation paddle across a 680 mm span. The -S magnet enables end-of-stroke sensing to sequence the next conveyor move, and the tie-rod design allows easy maintenance in dusty warehouse environments.
Choose the SC40 when your application needs roughly 600–900 N of force from standard shop air. If you need more force, stepping up to the SC50 delivers 982 N push at 0.5 MPa; if space is tight, the SC32 provides 402 N. At 680 mm stroke the 16 mm rod is moderately long—check for side loads and consider an external linear guide or a guided cylinder if the load is not perfectly axial, because unsupported rod deflection can cause bearing wear and seal leakage.
For a direct replacement, match five points: 40 mm bore, 680 mm stroke, PT1/4 port thread, the built-in magnet (so your existing sensors still work), and the basic mounting (no integral bracket). This SC is a tie-rod cylinder and is shorter than an ISO 15552 profile, so it will not interchange with ISO 15552 dimensions.
Quick checklist
At 0.7 MPa (7 bar) the SC40 bore generates 879 N of pushing force and 739 N of pulling force, based on the official AirTAC thrust table for the 40 mm bore with a 16 mm rod.
No. The AirTAC SC series is a tie-rod cylinder and its body length (A=142 mm) is shorter than a comparable ISO 15552 cylinder. It will only drop into a mounting designed for an AirTAC SC40 or another tie-rod cylinder with matching bore, stroke, PT1/4 ports, and magnet-equipped barrel.
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