Airtac SAID40 Double Rod Cylinder SAID40X35
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X35 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 35mm 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
- Stroke35 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X35
The AirTAC SAID40X35 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 35mm stroke. Because a carbon steel rod protrudes from both end covers, the annulus area is identical on extend and retract, yielding an equal 528N output force in either direction at 0.5 MPa. The extruded aluminum barrel integrates sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches.
This through-rod design allows you to attach a primary workpiece on one end and a secondary cam, position flag, or guidance mechanism on the rear. Operating at 30-800 mm/s with adjustable air cushions at both ends, it provides smooth deceleration. It is dimensionally interchangeable per ISO 15552, serving as a drop-in replacement for other standard double-rod profile cylinders.
Airtac SAID40 Double Rod Cylinder SAID40X35 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X35 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 35 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 SAID40X35
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×35 | 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 SAID40X35 Is Used
Symmetric Force Transfer
Ideal for parts handling where identical push and pull thrust is required to move delicate workpieces without jamming or asymmetric acceleration.
Anti-Rotation Slides
The twin carbon steel rods provide superior guidance and prevent the load from twisting during short-stroke clamping or lifting operations.
Through-Rod Sensing
Mount the primary tool on the front rod and use the rear rod end to trip a mechanical limit flag or drive a secondary mechanism.
Is the Airtac SAID40 Double Rod Cylinder SAID40X35 the Right Cylinder?
Choose this 40mm bore twin-rod cylinder when an application demands equal push and pull forces alongside high resistance to rotational torque. If your mechanism requires less force, the 32mm bore variant offers 345N both ways at 0.5 MPa; if you need more thrust, the 50mm bore provides 825N both ways. The 35mm stroke is ideal for short, symmetric transfer tasks. Remember that a plain SAID does not hold its load when air pressure is removed or the valve is centered—the piston will drift. For position holding without live pressure, consider an external rod lock, a SAIL pneumatic lock, or a BSAID clamp-lock cylinder.
When ordering, confirm the 40mm bore, 35mm stroke, PT tapered port thread (G1/4), and your required mounting accessories from the SAID set: Basic, FA, LB, TC, FTC, TCM1, or TCM2. Note that FB, CA, CB, and CR mounts are reserved for single-rod SAI cylinders and are not compatible here. Since the stroke is under 300mm, side-load stress on the rod bearing is minimal, but always ensure adequate rear-rod clearance for the protruding end.
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 SAID40X35 FAQ
Because it is a double-rod cylinder, the effective piston area is the same on both sides. It delivers an equal 528N of force in both extend and retract directions at 0.5 MPa (739N at 0.7 MPa).
Yes, it is dimensionally interchangeable per ISO 15552. However, SAID uses a reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2. It omits the FB, CA, CB, and CR brackets found on single-rod variants.
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