Airtac SAID40 Double Rod Cylinder SAID40AX240S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX240S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 240mm 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
- Stroke240 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX240S
The AirTAC SAID40X240-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 240mm stroke. Because the piston rod extends from both end covers, the effective annulus area is identical in both directions, yielding an equal push and pull force of 528N at 0.5 MPa. The rear rod exit allows you to mount a secondary cam or position flag while driving the primary load on the front side.
This variant includes a piston magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors, which ride cleanly in the dual-side barrel grooves. It is equipped with a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and utilizes PT tapered port threads (G1/4) for secure pneumatic connections.
Airtac SAID40 Double Rod Cylinder SAID40AX240S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX240S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 240 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 SAID40AX240S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×240 | 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 SAID40AX240S Is Used
Symmetric Transfer
Drives a transfer carriage with equal 528N force and matching speed in both directions, preventing cycle timing mismatches in automated lines.
Anti-Rotation Slide
The twin-rod geometry keeps the workpiece guided and prevents unwanted rotation without needing external linear bearings.
Through-Rod Sensing
Actuates the primary tool on the front rod while using the rear rod extension to trip a DMSE electronic sensor or mechanical limit flag.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX240S the Right Cylinder?
Select this 40mm bore double-rod cylinder when your mechanism requires symmetrical force and speed on both extend and retract strokes, or when you need twin-side guidance to prevent rotation. If your application demands less force, the 32mm bore offers 345N both ways; if you need more thrust, step up to the 50mm bore which provides 825N. Remember that a plain double-rod cylinder drifts when air pressure is lost or the valve centers; the adjustable air cushions only decelerate the piston at stroke ends and do not lock the load.
As a dimensionally interchangeable ISO 15552 profile cylinder, it serves as a drop-in replacement for other standard double-rod units. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because the stroke is 240mm, ensure the load is adequately supported by an external guide to prevent rod-bearing bending under side loads.
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 SAID40AX240S FAQ
Because it is a double-rod cylinder, the effective piston area is the same on both sides. It provides an equal extend and retract force of 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa.
Yes, it is dimensionally interchangeable with ISO 15552 profile cylinders. It supports a specific subset of mounts: Basic, FA, LB, TC, FTC, TCM1, and TCM2. It does not use the FB, CA, CB, or CR mounts found on single-rod variants.
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