The AirTAC Airtac SC40 Standard Cylinder SC40X68 is a genuine double-acting standard air cylinder with a Ø40mm bore and 68mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X68 is a 40 mm bore double-acting pneumatic cylinder with a 68 mm stroke, built in the compact tie-rod SC family. At 0.5 MPa operating pressure it generates 628 N of push force and 528 N on the pull stroke, making it a capable mid-range actuator for general industrial tasks.
This model uses a 16 mm diameter piston rod with an M12x1.25 male thread and PT1/4 ports. The adjustable air cushion at each end (21 mm length) decelerates the piston smoothly, and the total body length A is 142 mm. The 68 mm stroke is a non-standard length, produced to order for exact fitment.
| Model | Airtac SC40 Standard Cylinder SC40X68 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 68 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. |
| ×68 | 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 628 N push force at 0.5 MPa is well-suited to actuating gates or diverters on light-duty package and part handling conveyors.
Provides controlled, repeatable clamping force for CNC jigs, welding fixtures, and assembly tools where a 68 mm stroke fits the work envelope.
Operates sorting chutes or bin gates on seed drills and harvesters, with the TPU seals handling dusty, ambient-temperature environments.
For applications needing more force, stepping up to the 50 mm bore SC50 series provides 982 N push at 0.5 MPa. If space is the primary constraint, the 32 mm bore SC32 delivers 402 N. When replacing an existing cylinder, match five points: 40 mm bore, 68 mm stroke, PT1/4 port thread, the specific mounting accessory (this is a basic body, no bracket), and confirm whether a magnet is required (this model has none).
Quick checklist
At the standard 0.5 MPa operating pressure, the push force is 628 N. At 0.7 MPa it increases to 879 N, and at the maximum operating pressure of 0.9 MPa it reaches 1130 N.
It can replace another AirTAC SC series tie-rod cylinder of the same bore, stroke, and PT port thread, or a unit with identical critical dimensions. The SC is a tie-rod design and is not dimensionally interchangeable with ISO 15552 profile cylinders.
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