Airtac SAID40 Double Rod Cylinder SAID40BX35
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX35 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 SAID40BX35
The AirTAC SAID40X35 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40 mm bore and a 35 mm non-standard stroke. Because a rod exits both end covers, the annulus area is identical on extend and retract, yielding exactly 528 N of force both ways at 0.5 MPa. This symmetric output is ideal for mechanisms requiring equal push and pull dynamics.
This specific configuration uses SUS304 stainless steel rods (code B) for superior corrosion resistance and ships with PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting. Note that the rear rod protrudes from the back cover, requiring extra clearance in your layout to prevent collision during operation.
Airtac SAID40 Double Rod Cylinder SAID40BX35 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX35 |
|---|---|
| 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 SAID40BX35
| 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 SAID40BX35 Is Used
Symmetric Force Transfer
Drives a transfer carriage with identical 528 N push and pull force at 0.5 MPa, ensuring consistent timing and momentum control in both motion directions.
Anti-Rotation Slides
Twin rods exiting both covers keep the guided load perfectly aligned, preventing rotational drift on vertical lifting slides without external guide rails.
Dual-Station Actuation
Mount the primary workpiece on the front rod end and a secondary mechanism or position flag on the rear protruding rod to operate two synchronized stations.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX35 the Right Cylinder?
Choose this 40 mm bore double-rod cylinder when your application demands equal force and speed in both directions, or when you need to mount a secondary cam, position flag, or guide on the rear rod end. If your mechanism requires less force, step down to the 32 mm bore (345 N each way); for heavier transfer loads, step up to the 50 mm bore (825 N each way). Unlike the single-rod SAI, this SAID variant provides dual-side guidance that helps prevent load rotation.
This model is a drop-in replacement for other ISO 15552 double-rod cylinders, matching standard mounting dimensions and PT port locations. It supports the reduced SAID mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because this is a non-standard 35 mm stroke, it is made-to-order. Finally, note that the adjustable air cushions only decelerate the piston near stroke end; this cylinder cannot hold a load if air pressure is lost. For position holding, 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 SAID40BX35 FAQ
Because the double-rod design has the same effective piston 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, it is dimensionally interchangeable with other ISO 15552 profile cylinders. It supports the Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounting styles, but omits the FB, CA, CB, and CR brackets used only on single-rod variants.
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