Airtac SAID40 Double Rod Cylinder SAID40AX155
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX155 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 155mm 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
- Stroke155 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX155
The AirTAC SAID40X155 is a double-acting, double-rod ISO 15552 profile cylinder. Because a rod exits both ends, the annulus area is identical on extend and retract, yielding equal force and speed in both directions. This 40mm bore generates 528 N each way at 0.5 MPa and uses a PT tapered G1/4 port.
Equipped with SUS420J2 stainless steel rods (material code A), it handles corrosive environments better than carbon steel. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to mount a position flag on the rear rod end to trigger a second mechanism while the front end drives the primary workpiece.
Airtac SAID40 Double Rod Cylinder SAID40AX155 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX155 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 155 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 SAID40AX155
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×155 | 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 SAID40AX155 Is Used
Symmetric Transfer
Drives a transfer carriage with identical push and pull force (528 N at 0.5 MPa), ensuring consistent cycle timing without pressure compensation.
Anti-Rotation Slide
Twin rods exiting both end covers keep the load guided against rotation, ideal for vertical lifting slides that cannot twist during travel.
Dual-Station Actuation
Mount the primary tool on the front rod and a cam or position flag on the rear rod to actuate a secondary sequence or sensor independently.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX155 the Right Cylinder?
Choose this double-rod design over a single-rod SAI when your application demands anti-rotation guidance, twin-station actuation, or rear-rod position sensing. If you need less force, stepping down to a 32mm bore yields 345 N both ways at 0.5 MPa; stepping up to a 50mm bore provides 825 N. This 155mm stroke falls within the 1200mm standard limit, operating at 30-800 mm/s.
Remember that the adjustable air cushions at both ends only decelerate the piston near stroke end; they do not lock or hold the load. If your setup must maintain position without live air pressure, consider an external pilot-operated check valve or the SAIL lock variant. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2 (FB, CA, CB, and CR are omitted). It serves as a drop-in replacement for other ISO 15552 double-rod cylinders.
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 SAID40AX155 FAQ
Because the double-rod design subtracts the rod area on both sides, the extend and retract forces are equal. It provides 528 N both ways at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa.
Yes, the SAID40X155 is dimensionally interchangeable per ISO 15552. It shares the standard mounting interface and profile barrel dimensions, though it omits FB, CA, CB, and CR mountings, and uses PT tapered G1/4 ports.
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