The AirTAC Airtac SC40 Standard Cylinder SC40X135H is a genuine double-acting standard air cylinder with a Ø40mm bore and 135mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X135H is a double-acting pneumatic cylinder from the AirTAC SC tie-rod series, factory-equipped with high-temperature Viton (FKM) seals that extend the operating range to 0–150 °C, making it suitable for autoclaves, drying lines, and hot-end tooling. With a 40 mm bore and 135 mm stroke, it produces 628 N of push force and 528 N of pull force at 0.5 MPa, rising to 1130 N push at 0.9 MPa.
This model uses a 16 mm diameter piston rod with M12×1.25 male threads and PT1/4 ports. The adjustable air cushion at each end provides a 21 mm deceleration zone to soften impact. Its compact tie-rod body has a base length A of 142 mm, giving an extended length of approximately 277 mm. The cylinder is not ISO 15552 interchangeable; it is a shorter tie-rod design that must be matched to another AirTAC SC40 unit or equivalent tie-rod cylinder.
| Model | Airtac SC40 Standard Cylinder SC40X135H |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 135 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. |
| ×135 | 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.
With Viton seals rated to 150 °C, the SC40X135H operates reliably in autoclave door mechanisms, heated press tooling, and drying oven transfer systems where standard seals would degrade.
Delivers 628 N of push force at 0.5 MPa to divert hot parts or baked goods on conveyor lines. The 135 mm stroke provides enough travel for pusher gates and diverters in warm environments.
Used as a secondary clamp or ejector on injection moulds where mould temperature stays elevated. The adjustable cushion protects the mould halves by decelerating the 16 mm rod gently at end of stroke.
Choose the SC40 bore when your application needs roughly 630 N of force at standard plant pressure; if you need more force, step up to the SC50 bore which delivers 982 N push at 0.5 MPa, and if you can accept less, the SC32 bore provides 402 N. For a 135 mm stroke, side-loading is moderate, but always guide the rod externally or use a guided cylinder if the load is not purely axial—the 16 mm rod can bend under off-axis forces.
To ensure a drop-in replacement, match five points: 40 mm bore, 135 mm stroke, PT1/4 port thread, basic mount (no bracket), and the absence of a magnet. The ‘H’ suffix specifies Viton seals; if your environment is below 70 °C, a standard TPU seal version (SC40X135) may also work, but verify the seal material requirement first.
Quick checklist
At 0.5 MPa, the cylinder delivers 628 N pushing and 528 N pulling. At the maximum operating pressure of 0.9 MPa, the push force reaches 1130 N. The theoretical maximum force at 1.0 MPa is 128 kgf.
No. The AirTAC SC series is a tie-rod cylinder that is shorter in overall length than an ISO 15552 profile cylinder. It will only drop-in replace another AirTAC SC40 tie-rod cylinder with the same bore, stroke, PT1/4 ports, and basic mounting. Always check the body length A (142 mm) against your existing unit.
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