Airtac SAID40 Double Rod Cylinder SAID40X75S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X75S 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
About the Airtac SAID40 Double Rod Cylinder SAID40X75S
The AirTAC SAID40X75-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a through-rod that exits both end covers. Because the rod occupies both sides of the piston, the effective annulus area is identical in both directions, yielding an equal extend and retract force of 528 N at 0.5 MPa. The integrated -S magnet enables position detection using AirTAC CMSE reed or DMSE solid-state switches fitted into the dual sensor grooves.
This 40 mm bore unit utilizes a 16 mm carbon steel rod and a PT G1/4 port. The twin-rod architecture provides superior anti-rotation guidance and allows the rear rod end to drive a secondary mechanism or cam. It shares the same extruded aluminum barrel and adjustable air cushioning as the standard SAI series, ensuring dimensionally interchangeable drop-in compatibility with other ISO 15552 cylinders.
Airtac SAID40 Double Rod Cylinder SAID40X75S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X75S |
|---|---|
| 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 SAID40X75S
| 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 SAID40X75S Is Used
Symmetric Transfer
Drives a workpiece back and forth with identical 528 N force and speed in both directions, ensuring perfectly balanced transfer cycles.
Dual-Station Actuation
Mounts the primary tool on the front rod and a secondary cam or limit flag on the rear rod to actuate separate stations simultaneously.
Anti-Rotation Slides
Uses the twin through-rods to guide the load rigidly, preventing rotation without needing external guide rails for high-precision slides.
Is the Airtac SAID40 Double Rod Cylinder SAID40X75S the Right Cylinder?
Select this 40 mm bore model when an application requires 528 N of symmetric force both ways, stepping down from the 63 mm bore (1402 N) for lighter duties, or up from the 32 mm bore (345 N) when extra stability is needed. The double-rod design is chosen over a single-rod SAI when the load requires resistance to torsion, or when a rear-rod position flag is necessary. For mounting, SAID supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 accessories, deliberately omitting the FB, CA, CB, and CR brackets found on single-rod variants.
Ensure you specify the -S magnet option if pairing with CMSE or DMSE switches. Note that the adjustable air cushions only decelerate the piston near stroke end; they do not lock the load. If the mechanism must hold position without live air pressure, consider a SAIL lock cylinder, a BSAID clamp-lock, or an external pilot-operated check valve.
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 SAID40X75S FAQ
The SAID40X75-S provides an equal force of 528 N at 0.5 MPa (739 N at 0.7 MPa) in both extend and retract directions, because the double-rod design creates matching annulus areas on both sides of the piston.
Yes, it is dimensionally interchangeable per ISO 15552 profile cylinder standards. It shares the standard mounting interface and barrel profile, allowing it to serve as a drop-in replacement for other ISO 15552 double-rod cylinders.
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