Airtac SAID40 Double Rod Cylinder SAID40AX30
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 30mm 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
- Stroke30 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX30
The AirTAC SAID40X30 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 30mm stroke. Because a rod exits both end covers, the annular piston area is identical on extend and retract, yielding exactly 528N of force each way at 0.5 MPa. The SUS420J2 stainless steel rods provide excellent corrosion resistance and surface hardness for demanding environments.
This through-rod design allows mounting the primary workpiece on one end and a position flag, cam, or secondary mechanism on the rear rod. The extruded aluminum barrel includes sensor grooves on both sides, and because no magnet is specified, position sensing requires external flags rather than internal CMSE or DMSE switches.
Airtac SAID40 Double Rod Cylinder SAID40AX30 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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 SAID40AX30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 SAID40AX30 Is Used
Symmetric Force Transfer
Ideal for reciprocating shuttles where the 528N push and pull forces must remain perfectly balanced to prevent drive bias.
Anti-Rotation Slides
The twin rods exiting both covers keep guided loads from twisting during short 30mm travel precision indexing.
Rear-Rod Actuation
Drive a primary workpiece on the front rod while using the rear protrusion to trip an external mechanical limit switch.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX30 the Right Cylinder?
Choose this 40mm bore when an application requires symmetric push and pull forces, as both directions deliver 528N at 0.5 MPa. If your mechanism needs less force, the 32mm bore offers 345N both ways, while the 50mm bore steps up to 825N. The double-rod architecture is preferred over a single-rod SAI when twin-side guidance, anti-rotation stability, or rear-rod actuation is required.
This model uses a PT tapered G1/4 port and supports the reduced SAID mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting the FB, CA, CB, and CR variants used on single-rod cylinders). It is dimensionally interchangeable per ISO 15552 standards. Note that the adjustable air cushions only decelerate the piston near stroke end; they do not hold the load if air pressure is lost.
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 SAID40AX30 FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the extend and retract forces are equal. It provides 528N each way at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa.
It uses a reduced ISO 15552 mounting interface set: Basic, FA, LB, TC, FTC, TCM1, and TCM2. It omits the FB, CA, CB, and CR mounts because the rear rod protrudes from the back cover.
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