Airtac SAID40 Double Rod Cylinder SAID40X300
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X300 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 300mm 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
- Stroke300 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X300
The AirTAC SAID40X300 is a double-acting, double-rod ISO 15552 profile cylinder engineered for applications demanding equal force and speed in both directions. Because the twin rods occupy both sides of the piston, the annulus area is identical on extend and retract, yielding a precise 528N of thrust each way at 0.5 MPa. The extruded aluminum barrel incorporates sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches.
A defining benefit of this through-rod design is the ability to attach a primary workpiece on the front end and a secondary mechanism, cam, or position flag on the rear rod end. The standard carbon steel 16mm rod provides robust load guidance, while adjustable air cushions at both ends absorb kinetic energy to ensure smooth stroke transitions.
Airtac SAID40 Double Rod Cylinder SAID40X300 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X300 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 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 SAID40X300
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×300 | 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 SAID40X300 Is Used
Symmetric Force Transfer
Drives a dual-sided transfer mechanism where the 528N push and pull forces must remain perfectly balanced for precise material handling.
Through-Rod Sensing
Operates a primary assembly tool on the front stroke while the rear rod end actuates a DMSE solid-state sensor flag for exact positioning.
Anti-Rotation Slides
Guides a heavy sliding carriage using the twin 16mm carbon steel rods to prevent mechanical twisting during a 300mm traverse.
Is the Airtac SAID40 Double Rod Cylinder SAID40X300 the Right Cylinder?
Selecting the SAID40X300 is ideal when a mechanism requires twin-station actuation, anti-rotation guidance, or rear-rod position sensing that a single-rod SAI cannot provide. If your application needs less force, stepping down to the 32mm bore yields 345N both ways; stepping up to the 50mm bore provides 825N. This model features a PT-tapered G1/4 port and a 300mm stroke. At 300mm of travel, the unsupported load increases the risk of rod-bearing bending; therefore, an external linear guide is recommended to prevent excessive side-loading.
This cylinder is dimensionally interchangeable per ISO 15552, serving as a drop-in replacement for other ISO 15552 double-rod cylinders. It utilizes the reduced SAID mounting accessory set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting the FB, CA, CB, and CR brackets. Note that the adjustable air cushion only decelerates the piston near stroke end; it does not hold a load. If position holding without live pressure is required, consider the SAIL or BSAID series.
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 SAID40X300 FAQ
Because the double-rod design occupies volume on both sides of the piston, the effective area is equal in both directions. It delivers 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa for both extension and retraction.
Yes, it is dimensionally interchangeable with ISO 15552 profile cylinders. It supports the Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, but omits the FB, CA, CB, and CR brackets found on single-rod versions.
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