Airtac SAID40 Double Rod Cylinder SAID40AX115
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX115 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 115mm 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
- Stroke115 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX115
The AirTAC SAID40X115 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 115mm stroke. Because a rod extends from both end covers, the annulus area is identical on the extend and retract sides. This yields exactly 739 N of output force in both directions at 0.7 MPa, ensuring perfectly symmetric thrust and speed for demanding transfer operations.
Equipped with a SUS420J2 stainless steel rod (material code A), this unit provides excellent corrosion resistance for harsher environments. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE solid-state switches. Note that the rear protruding rod requires additional clearance behind the cylinder to accommodate the second rod end and any attached cam or position flag.
Airtac SAID40 Double Rod Cylinder SAID40AX115 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX115 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 115 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 SAID40AX115
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×115 | 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 SAID40AX115 Is Used
Symmetric Transfer
Drives a transfer carriage where equal 739 N push and pull forces at 0.7 MPa prevent asymmetric acceleration and deceleration across the stroke.
Anti-Rotation Slide
The twin-rod configuration keeps the load guided and prevents rotation without needing an external external guide rail, ideal for precision sliding jigs.
Rear-Cam Actuation
Mounts a workpiece on the front rod end and a cam or position flag on the rear protruding rod to trigger secondary mechanisms or CMSE/DMSE sensors.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX115 the Right Cylinder?
Select this 40mm bore when your mechanism requires equal push and pull forces—739 N at 0.7 MPa—along with dual-side guidance to prevent rotation. If your application needs less force, the 32mm bore provides 483 N; if more is required, the 50mm bore offers 1154 N. The through-rod design is specifically chosen over a single-rod SAI when you need to mount a secondary tool, a position flag, or drive a second mechanism from the rear end.
This cylinder uses PT tapered port threads (G1/4). Mounting accessories are limited to the SAID set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting the FB, CA, CB, and CR variants used on single-rod SAI models). The adjustable air cushions at both ends decelerate the piston near stroke end, but they do not lock or hold the load if air pressure is lost; for position holding, consider an external rod lock or the SAIL/BSAID series. As a true ISO 15552 profile cylinder, it is dimensionally interchangeable with 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 SAID40AX115 FAQ
Because the double-rod design has the same annulus area on both sides, it provides equal force in both directions: 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa.
Yes, the SAID40X115 is an extruded aluminum profile cylinder with an ISO 15552 mounting interface, making it dimensionally interchangeable with other ISO 15552 double-rod cylinders of the same bore and stroke.
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