The AirTAC Airtac SC40 Standard Cylinder SC40X425S 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 SC40X425S is a double-acting pneumatic cylinder delivering 628 N of push force at 0.5 MPa (1130 N at 0.9 MPa). Its 40 mm bore and 425 mm stroke suit medium-duty linear tasks, with a 16 mm diameter piston rod providing good column strength for pushing applications.
This model includes the factory-installed -S magnet, enabling direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors on the tie-rod barrel for end-of-stroke or mid-stroke position feedback. The adjustable air cushion at both ends decelerates the piston smoothly, and the standard PT1/4 port threads connect easily to common pneumatic fittings.
| Model | Airtac SC40 Standard Cylinder SC40X425S |
|---|---|
| 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.
The 425 mm stroke and sensor-ready magnet allow precise gate positioning on sorting conveyors, with CMSG sensors confirming open/closed states for automated material routing.
Delivers 628 N at 0.5 MPa for secure workpiece clamping in CNC or welding fixtures. The built-in magnet enables clamp/unclamp verification via solid-state sensors.
Ideal for case packing and palletising pushers requiring a mid-range stroke. The 16 mm rod resists buckling under straight-line thrust, and the adjustable cushion reduces end-of-stroke shock.
Choose the SC40 bore when your application needs between 628 N (push at 0.5 MPa) and 1130 N (push at 0.9 MPa). For lower force, step down to the SC32 (402 N at 0.5 MPa); for higher force, move up to the SC50 (982 N at 0.5 MPa). At 425 mm stroke, the 16 mm rod is well-supported within the standard range, but avoid direct side loading—use an external linear guide if the load is not purely axial.
For replacement, match five points: 40 mm bore, 425 mm stroke, PT1/4 port thread, the built-in magnet (-S suffix), and the basic (no bracket) mounting configuration. This is a tie-rod cylinder, not an ISO 15552 profile unit, so dimensional interchangeability is limited to another AirTAC SC40 of the same stroke and options.
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.
Yes. The -S suffix in SC40X425S indicates a built-in magnet on the piston. This allows AirTAC CMSG (reed), DMSG, or EMSG (solid-state) sensors to be clamped directly onto the tie-rod barrel for contactless position sensing without additional brackets.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.