The AirTAC Airtac SC40 Standard Cylinder SC40X395 is a genuine double-acting standard air cylinder with a Ø40mm bore and 395mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X395 is a double-acting tie-rod cylinder with a 40 mm bore and 395 mm stroke, delivering a push force of 628 N at 0.5 MPa and up to 1130 N at the maximum operating pressure of 0.9 MPa. Its 16 mm diameter piston rod and 21 mm adjustable air cushion provide reliable deceleration for mid-stroke linear tasks.
With a compact body length A of 142 mm and a total extended length of approximately 537 mm, this cylinder fits installations where a shorter footprint than an ISO 15552 unit is required. The PT1/4 ports and M12x1.25 rod thread are standard, and the TPU seals suit ambient temperatures from -20 to +70 °C.
| Model | Airtac SC40 Standard Cylinder SC40X395 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 395 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. |
| ×395 | 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 395 mm stroke and 628 N push force at 0.5 MPa are well-suited for stopping or diverting medium-weight packages on conveyor lines, where the adjustable cushion absorbs impact quietly.
Provides consistent clamping pressure for woodworking or light metal fabrication jigs. The 16 mm rod resists deflection under axial load, maintaining alignment over the full 395 mm stroke.
Ideal for actuating discharge gates or tipping small bins in agricultural or recycling sorting stations, where the PT1/4 port and tie-rod construction offer easy maintenance.
For applications needing slightly more force, the 50 mm bore SC50 series provides 982 N push at 0.5 MPa. If space is tighter and the load is lighter, stepping down to the 32 mm bore (402 N at 0.5 MPa) may be suitable. At 395 mm, the stroke is within the 1200 mm maximum standard stroke for the 40 mm bore.
To replace an existing unit, match five points: 40 mm bore, 395 mm stroke, PT1/4 port thread, basic (no bracket) mounting, and no magnet. Because the stroke exceeds 300 mm, ensure the rod is not subjected to side loads; use an external linear guide or a guided cylinder if lateral forces are present to prevent rod bending and premature bearing wear.
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 force at 1.0 MPa is 128 kgf.
No. The SC40X395 is a double-acting cylinder that requires continuous air pressure to maintain position. If pressure is lost or the directional valve is centered, the piston can drift. For load holding, add a pilot-operated check valve or an external rod brake.
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