The AirTAC Airtac SC40 Standard Cylinder SC40X425 is a genuine double-acting standard air cylinder with a Ø40mm bore and 425mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X425 is a double-acting tie-rod cylinder with a 40 mm bore and a 425 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 PT1/4 port provide a balanced combination of strength and flow for medium-duty linear tasks.
With a body length A of 142 mm, the total extended length reaches approximately 567 mm. The adjustable pneumatic cushion at each end, with a 21 mm cushion length, effectively decelerates the piston to reduce end-of-stroke impact, ensuring smooth operation in automation sequences.
| Model | Airtac SC40 Standard Cylinder SC40X425 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 425 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. |
| ×425 | 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.
Operates diverter gates on packaging conveyors, using the 628 N push force at 0.5 MPa to reliably redirect cartons and parcels between lanes.
Provides consistent clamping pressure for woodworking or light metal fabrication jigs, where the 425 mm stroke accommodates varied workpiece sizes.
Drives sorting paddles or chutes in grading lines, benefiting from the TPU seals' durability in dusty environments and the adjustable cushion for smooth actuation.
This 40 mm bore model suits applications needing a step up in force from the 32 mm bore (402 N at 0.5 MPa). If your load exceeds 628 N at 0.5 MPa, consider moving to the 50 mm bore which provides 982 N. For this 425 mm stroke, ensure the rod is not subjected to high side loads; an external linear guide is recommended to prevent rod bending and premature bearing wear.
For a direct replacement, match the 40 mm bore, 425 mm stroke, PT1/4 port thread, and basic mounting configuration. If your previous cylinder used a magnet for sensors, verify whether the -S suffix is required for CMSG/DMSG switch mounting.
Quick checklist
At 0.5 MPa air pressure, the push force is 628 N and the pull force is 528 N. At the maximum operating pressure of 0.9 MPa, the push force increases to 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 physically shorter than an ISO 15552 profile cylinder, so mounting dimensions are not interchangeable. It is a direct dimensional match only for another AirTAC SC tie-rod cylinder with the same bore, stroke, and mounting accessories.
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