Airtac SAID40 Double Rod Cylinder SAID40BX75S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 75mm 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
- Stroke75 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAID40 Double Rod Cylinder SAID40BX75S
The AirTAC SAID40X75-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 75mm stroke. Because the piston rod exits both end covers, the annulus area is identical on both sides, yielding exactly 528N of force in both extend and retract directions at 0.5 MPa. This symmetric output is ideal for mechanisms requiring perfectly balanced push and pull dynamics.
This specific configuration includes a SUS304 stainless steel rod (option B) for superior corrosion resistance and a built-in magnet (-S) for position sensing. The extruded aluminum barrel features sensor grooves on both sides, allowing you to mount CMSE reed or DMSE electronic switches along the primary stroke while using the rear rod extension for a cam or secondary position flag.
Airtac SAID40 Double Rod Cylinder SAID40BX75S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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 SAID40BX75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 SAID40BX75S Is Used
Symmetric Force Transfer
Drives a transfer carriage where the 528N extend and retract forces must be perfectly equal to maintain consistent tension on the workpiece during bidirectional indexing.
Anti-Rotation Slides
Powers a vertical lifting slide where the twin SUS304 rods prevent the platform from twisting under offset loads, ensuring precise vertical alignment.
Dual-Station Actuation
Actuates a primary clamping jaw on the front rod while the rear rod extension drives a secondary limit flag, triggering a DMSE electronic sensor for a synchronized process step.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX75S the Right Cylinder?
Select this 40mm bore double-rod cylinder when your application demands equal force and speed in both directions, offering 528N each way at 0.5 MPa. If your mechanism requires less force, stepping down to the 32mm bore provides 345N both ways; if you need more power, the 50mm bore offers 825N. The double-rod design inherently provides better anti-rotation guidance compared to a single-rod SAI, keeping the load stable.
As a dimensionally interchangeable ISO 15552 profile cylinder, it serves as a drop-in replacement for other standard double-rod cylinders. It uses a PT G1/4 port and supports mountings from the reduced SAID set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Note that the adjustable air cushions at both ends only decelerate the piston near stroke end; they do not hold the load. If air pressure is lost, the cylinder will drift, requiring an external rod lock or a BSAID clamp-lock cylinder for secure position holding.
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 SAID40BX75S FAQ
Because the rod occupies both sides of the piston, the effective area is identical in both directions. It provides 528N of force at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa for both extending and retracting.
Yes, the SAID40X75-S is a true ISO 15552 profile cylinder, making its mounting interface and dimensions interchangeable with other ISO 15552 double-rod cylinders. It uses a PT G1/4 port and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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