Airtac SAID40 Double Rod Cylinder SAID40AX425S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX425S 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
About the Airtac SAID40 Double Rod Cylinder SAID40AX425S
The AirTAC SAID40X425-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 425mm stroke. Because a rod exits both end covers, the annulus area is identical on extend and retract, yielding exactly 528N of force in both directions at 0.5MPa. Equipped with a magnet for position sensing, it operates at speeds of 30-800mm/s.
This variant uses a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance compared to standard carbon steel. The twin-rod architecture allows mounting a primary workpiece on the front rod and a cam, position flag, or secondary mechanism on the rear rod, providing dual-side guidance and excellent anti-rotation stability.
Airtac SAID40 Double Rod Cylinder SAID40AX425S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX425S |
|---|---|
| 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 SAID40AX425S
| 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 SAID40AX425S Is Used
Symmetric Transfer
Drives a shuttle mechanism where the equal 528N force both ways ensures perfectly balanced motion during bi-directional product transfer.
Anti-Rotation Slide
The twin-rod design prevents piston rotation, keeping a precision machining slide guided straight without external rails.
Through-Rod Sensing
Mounts the work tool on the front rod and a DMSE sensor flag on the rear rod, keeping the switch isolated from the main work area.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX425S the Right Cylinder?
Choose this 40mm bore double-rod cylinder when your application requires identical push and pull forces (528N at 0.5MPa) or needs anti-rotation guidance that a single-rod SAI cannot provide. If you need less force, the 32mm bore offers 345N both ways; if your load demands more, step up to the 50mm bore for 825N. As a true ISO 15552 profile cylinder, it is dimensionally interchangeable with other ISO 15552 double-rod cylinders.
This model features PT tapered port threads and includes the -S magnet for use with AirTAC CMSE reed switches and DMSE solid-state electronic sensors. At 425mm stroke, the unsupported rod length increases side-load risks; use an external guide to prevent rod-bearing bending. Remember that the adjustable air cushions only decelerate the piston near stroke end—they do not hold a load. For position holding without live pressure, consider an external rod lock, SAIL, or BSAID clamp-lock cylinder.
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 SAID40AX425S FAQ
Because the double-rod design occupies piston area on both sides, the extend and retract forces are equal. It provides 528N at 0.5MPa, 739N at 0.7MPa, and 950N at 0.9MPa in both directions.
It uses a specific ISO 15552 mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2. It omits the FB, CA, CB, and CR brackets that are exclusive to single-rod SAI models.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAID40 Double Rod Cylinder SAID40AX425S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.