Airtac SAID40 Double Rod Cylinder SAID40X35S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X35S 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 SAID40X35S
The AirTAC SAID40X35-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 35mm stroke. Because the piston rod exits both end covers, the effective annulus area is identical on extension and retraction, yielding an equal 528N of force in both directions at 0.5 MPa. The integrated -S magnet enables precise position detection using AirTAC CMSE reed or DMSE electronic solid-state switches.
This through-rod architecture allows you to mount the primary workpiece on the front rod end while attaching a cam, mechanical stop, or secondary tool to the rear. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting, and the standard carbon steel rod handles industrial loads reliably.
Airtac SAID40 Double Rod Cylinder SAID40X35S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X35S |
|---|---|
| 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 SAID40X35S
| 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 SAID40X35S Is Used
Symmetric Force Transfer
Drives transfer shuttles where the equal 528N push and pull force prevents stalling or asymmetric acceleration across the 35mm travel.
Through-Rod Sensing
Mounts the work tool on the front rod while the rear rod end carries a physical limit flag to trigger external DMSE electronic sensors.
Anti-Rotation Slides
Utilizes the dual-rod guidance to prevent mechanical twisting on short-stroke clamping and press-fitting stations without external guides.
Is the Airtac SAID40 Double Rod Cylinder SAID40X35S the Right Cylinder?
Selecting this 40mm bore over the smaller 32mm variant steps the bidirectional force up from 345N to 528N at 0.5 MPa, whereas stepping up to a 63mm bore would provide 1402N. The twin-rod design is specifically chosen when an application demands superior anti-rotation resistance, dual-side guidance, or rear-rod position sensing that a single-rod SAI cannot offer. For dimensionally interchangeable drop-in replacements per ISO 15552, specify the 40mm bore, 35mm stroke, PT port thread, and the -S magnet option.
Keep in mind that the adjustable air cushions at both ends only decelerate the piston near stroke end; they do not lock or hold the load. If your process requires position holding without live air pressure, you must incorporate an external rod lock or pilot-operated check valve, or switch to an BSAID clamp-lock variant.
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 SAID40X35S FAQ
Because the rod occupies both sides of the piston, the effective area is equal in both directions. It provides 528N of force at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa for both extension and retraction.
Yes, the SAID40X35-S is dimensionally interchangeable per ISO 15552 mounting dimensions. It uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets found on single-rod variants.
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