Airtac SAID40 Double Rod Cylinder SAID40AX425
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX425 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 SAID40AX425
The AirTAC SAID40X425 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 an equal 528N of force in each direction at 0.5MPa. The SUS420J2 stainless steel rods provide excellent corrosion resistance and surface hardness for demanding environments.
This through-rod architecture allows you to attach the primary workpiece on one end and mount a position flag, cam, or secondary mechanism on the rear rod. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement, and adjustable air cushions at both ends absorb impact kinetic energy near stroke limits.
Airtac SAID40 Double Rod Cylinder SAID40AX425 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX425 |
|---|---|
| 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 SAID40AX425
| 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 SAID40AX425 Is Used
Symmetric Force Transfer
Provides identical 528N thrust and pull at 0.5MPa for operations requiring perfectly balanced force in both directions.
Anti-Rotation Slides
Twin rods exiting both ends keep the guided load perfectly stable and prevent rotational twist during long 425mm transfers.
Through-Rod Sensing
Drives the primary tool on the front while the rear rod end carries a cam or position flag for external limit detection.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX425 the Right Cylinder?
Choose this 40mm bore double-rod cylinder when an application requires equal push and pull forces, or when you need dual-side guidance to prevent load rotation. If your mechanism demands higher thrust, stepping up to the 50mm bore provides 825N both ways at 0.5MPa. Conversely, downsizing to the 32mm bore offers 345N. At 425mm of travel, the long unsupported stroke creates a risk of rod-bearing bending under side loads; always use an external guide to support the load.
As a true ISO 15552 profile cylinder, it is dimensionally interchangeable with other ISO 15552 double-rod cylinders. Specify PT tapered port threads and the correct mounting accessories from the SAID set: Basic, FA, LB, TC, FTC, TCM1, or TCM2 (FB, CA, CB, and CR are single-rod SAI only). Note that the adjustable air cushions decelerate the piston but do not hold the load; if position holding is required without live air pressure, use a SAIL lock cylinder or an external rod lock.
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 SAID40AX425 FAQ
Because the double-rod design subtracts the rod area on both sides, the push and pull forces are identical. It delivers 528N at 0.5MPa, 739N at 0.7MPa, and 950N at 0.9MPa in both directions.
Yes, the SAID40X425 is an extruded aluminum profile cylinder with an ISO 15552 mounting interface, making it dimensionally interchangeable with other ISO 15552 double-rod cylinders. It uses a G1/4 port and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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