The AirTAC Airtac SC40 Standard Cylinder SC40X650N is a genuine double-acting standard air cylinder with a Ø40mm bore and 650mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X650N is a double-acting pneumatic cylinder from the AirTAC SC tie-rod series, combining a 40 mm bore with a 650 mm stroke. It delivers 628 N of push force and 528 N of pull force when operated at 0.5 MPa, making it suitable for medium-duty linear tasks. The piston rod measures 16 mm in diameter with an M12x1.25 male thread, and the cylinder body length (A) is 142 mm.
This model is fitted with NBR (nitrile) seals, offering reliable performance within the standard temperature range of -20 to +70 °C. The cylinder features adjustable pneumatic cushioning at both ends with a cushion length of 21 mm to decelerate the piston smoothly. Ports are threaded PT1/4, and the total extended length is approximately 792 mm.
| Model | Airtac SC40 Standard Cylinder SC40X650N |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 650 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. |
| ×650 | 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.
Actuates diverter gates on conveyor lines. The 650 mm stroke provides the reach needed to fully redirect medium-sized packages between lanes at 0.5-0.7 MPa.
Provides consistent clamping force for woodworking or light metal fabrication jigs. The NBR seals are a cost-effective choice for standard shop air environments.
Operates chutes or hopper doors on seeders and spreaders. The tie-rod construction is robust and serviceable in dusty, non-aggressive chemical conditions.
Select the SC40X650N when your application requires a force output in the 600 N class at standard plant pressure. If you need more force, stepping up to the 50 mm bore (SC50) provides 982 N of push force at the same 0.5 MPa. For lighter, more compact installations, the 32 mm bore (SC32) delivers 402 N.
For this 650 mm stroke length, ensure the load is guided externally if significant side forces are present, as a long, unsupported 16 mm rod is susceptible to bending under lateral loads. When replacing an existing cylinder, match five key points: the 40 mm bore, the 650 mm stroke, the PT1/4 port thread, the basic (no bracket) mounting, and the absence of a built-in magnet.
Quick checklist
At 0.5 MPa, the cylinder produces 628 N pushing and 528 N pulling. At the maximum operating pressure of 0.9 MPa, the push force increases to 1130 N.
No. The SC40X650N is a double-acting cylinder and will drift or drop its load if pressure is exhausted or the directional valve is centered. To hold a position without live pressure, you must add an external rod brake or a pilot-operated check valve.
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