The AirTAC Airtac SC40 Standard Cylinder SC40X300H is a genuine double-acting standard air cylinder with a Ø40mm bore and 300mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X300H is a double-acting pneumatic cylinder delivering 628 N of push force at 0.5 MPa (1130 N at 0.9 MPa). Its 300 mm stroke suits medium-reach clamping, pressing, and material-handling tasks, while the 16 mm diameter piston rod provides good rigidity for linear motion.
This model carries the 'H' suffix, indicating Viton (FKM) seals that shift the operating temperature range to 0–150 °C, making it suitable for hot environments or applications with aggressive media where standard TPU seals would degrade. The body length A is 142 mm, giving a total extended length of 442 mm.
| Model | Airtac SC40 Standard Cylinder SC40X300H |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 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. |
| ×300 | 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.
Viton seals allow the SC40X300H to operate reliably in ambient temperatures up to 150°C, ideal for foundry equipment, autoclave doors, and drying ovens.
With 300 mm of stroke and 1130 N of force at 0.9 MPa, this cylinder provides consistent clamping pressure for CNC fixture and assembly jig applications.
Use the SC40X300H for pushers and diverters on conveyors moving hot products, where standard seals would fail prematurely.
Choose the SC40 bore when your application needs between 528 N (pull) and 628 N (push) at 0.5 MPa. If you require more force, step up to the SC50 bore which provides 982 N push at the same pressure; for a lighter, more compact solution, the SC32 bore offers 402 N push. For this 300 mm stroke, ensure side loads are minimal or use an external guide—the 16 mm rod can experience bending under high lateral forces at full extension.
To replace an existing cylinder, match five points: 40 mm bore, 300 mm stroke, PT port thread, basic mounting (no bracket), and no magnet. The SC40X300H is a tie-rod cylinder, not an ISO 15552 profile, so verify body length A (142 mm) and mounting hole patterns against your machine.
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, push force reaches 1130 N. The theoretical maximum at 1.0 MPa is 128 kgf.
No. The SC series is a tie-rod cylinder and is shorter than an ISO 15552 cylinder. It is not dimensionally interchangeable. Only replace another AirTAC SC tie-rod cylinder or a mechanically identical tie-rod unit with matching bore, stroke, port thread, and mounting.
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