Airtac SAID40 Double Rod Cylinder SAID40X425
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X425 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 425mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ40 mm
- Stroke425 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAID40 Double Rod Cylinder SAID40X425
The AirTAC SAID40X425 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 425mm stroke. Because the twin rods occupy both sides of the piston, the annulus area is identical in extend and retract, yielding an equal 528N of force each way at 0.5 MPa. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches.
A defining advantage of this through-rod design is the ability to attach a workpiece on the front end while using the rear rod for a position flag or cam. The carbon steel rods provide robust load guidance, and the unit uses adjustable air cushions at both ends to decelerate the piston smoothly.
Airtac SAID40 Double Rod Cylinder SAID40X425 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X425 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 425 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| 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, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAID40 Double Rod Cylinder SAID40X425
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×425 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAID40 Double Rod Cylinder SAID40X425 Is Used
Symmetric Force Transfer
Drives a shuttle mechanism where the exact 528N push and pull force at 0.5 MPa ensures consistent momentum transfer without the speed disparity of single-rod units.
Anti-Rotation Slides
The twin carbon steel rods guide the load against rotation, making it ideal for precision vertical lifting tasks that would bind in a single-rod cylinder.
Through-Rod Sensing
Operates a primary workpiece on the front stroke while the rear rod end triggers a solid-state DMSE sensor flag for dual-station actuation.
Is the Airtac SAID40 Double Rod Cylinder SAID40X425 the Right Cylinder?
Choose this 40mm bore model when your application requires equal push and pull forces and enhanced anti-rotation stability that a single-rod SAI cannot provide. If you need less force, the 32mm bore offers 345N both ways; if your load demands more, the 50mm bore provides 825N. Because the 425mm stroke is relatively long, the unsupported rod is susceptible to bending under side loads—always use an external guide to prevent rod-bearing wear.
This cylinder is dimensionally interchangeable per ISO 15552 and uses a PT tapered G1/4 port. It supports mounting accessories Basic, FA, LB, TC, FTC, TCM1, and TCM2. Note that a plain SAID does not hold its load when air is exhausted; the piston drifts, and the cushion only decelerates near stroke end. For position holding without live pressure, consider an external rod lock or the SAIL type.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAID40 Double Rod Cylinder SAID40X425 FAQ
Because it is a double-rod cylinder, the effective area is the same on both sides. It delivers an equal 528N of force in both extend and retract directions at 0.5 MPa, and 739N at 0.7 MPa.
Yes, the SAID40X425 is dimensionally interchangeable with other ISO 15552 profile cylinders. It uses standard mounting interfaces (Basic, FA, LB, TC, FTC, TCM1, TCM2) and a G1/4 port for drop-in replacement.
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