Airtac SAID40 Double Rod Cylinder SAID40AX375
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX375 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 375mm 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
- Stroke375 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX375
The AirTAC SAID40X375 is a double-acting, double-rod profile cylinder conforming to ISO 15552 dimensional interchangeability standards. Because a piston rod exits both end covers, the annulus area is identical on the extend and retract sides, yielding exactly 528 N of force in both directions at 0.5 MPa. The 375 mm stroke operates at speeds of 30-800 mm/s, and the adjustable air cushions at both ends are set to 30 mm.
This configuration features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. It uses PT tapered port threads (G1/4) and lacks a piston magnet, meaning it cannot host CMSE or DMSE solid-state sensors without modification. The extruded aluminum barrel includes sensor grooves on both sides, and the rear rod protrusion requires additional clearance behind the cylinder to accommodate the outward stroke.
Airtac SAID40 Double Rod Cylinder SAID40AX375 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX375 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 375 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 SAID40AX375
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×375 | 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 SAID40AX375 Is Used
Symmetric-Force Transfer
Drives a shuttle mechanism where equal push and pull forces of 528 N at 0.5 MPa are critical for maintaining consistent cycle times in both directions.
Anti-Rotation Slides
The twin-rod architecture prevents the piston from twisting under offset loads, keeping precision sliding fixtures perfectly guided without external linear bearings.
Twin-Station Actuation
Mounts a workpiece on the front rod extension and a secondary mechanical stop or cam on the rear rod to actuate a secondary mechanism simultaneously.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX375 the Right Cylinder?
Select this 40 mm bore over the smaller SAID32 model when you need more than 345 N of both-way force, or step up to the SAID50 if your application requires 825 N at 0.5 MPa. A double-rod design is specifically chosen when a machine requires dual-side guidance, anti-rotation control, or the ability to mount a secondary cam and position flag on the rear rod while driving a primary workpiece on the front. It uses the standard SAID mounting accessory set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits the FB, CA, CB, and CR brackets found on single-rod variants.
Because the 375 mm stroke is relatively long, the unsupported rod length increases the risk of side-load bending and rod-bearing wear; always use an external guide rail to support heavy loads. Furthermore, this standard SAID cylinder does not hold its position or brake a load if air pressure is lost or the valve is centered—the piston will drift. For dead-end holding without live pressure, specify an AirTAC SAIL (air-released lock), 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 SAID40AX375 FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the push and pull forces are identical. It generates 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa in both directions.
Yes, the SAID40X375 is dimensionally interchangeable with other ISO 15552 profile cylinders. You can swap it directly using the existing mounting interface and G1/4 port connections without altering your machine frame.
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