Airtac SAID40 Double Rod Cylinder SAID40BX135S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX135S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 135mm 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
- Stroke135 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40BX135S
The AirTAC SAID40X135-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 135mm stroke. Because the piston rod exits both end covers, the effective annulus area is identical on both sides, yielding perfectly symmetric thrust. This design outputs 528N of force in both extend and retract directions at 0.5 MPa.
Equipped with a magnet (-S), this variant supports AirTAC CMSE reed and DMSE electronic solid-state sensors housed within the dual-side barrel grooves. It utilizes SUS304 stainless steel rods (code B) for superior corrosion resistance and features PT tapered port threads. The rear rod extension is ideal for mounting a secondary cam, position flag, or driving a second mechanism.
Airtac SAID40 Double Rod Cylinder SAID40BX135S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX135S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 135 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 SAID40BX135S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×135 | 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 SAID40BX135S Is Used
Symmetric Force Transfer
Drives loads requiring identical push and pull thrust, leveraging the 528N both-way capability to maintain consistent actuation speed and power without pressure compensation.
Anti-Rotation Slides
Uses the twin SUS304 rods to guide the payload and prevent mechanical twisting during vertical or horizontal movements, eliminating the need for external guide rails.
Through-Rod Sensing
Mounts a position flag or cam on the rear rod end to trigger DMSE electronic sensors, providing precise end-of-stroke confirmation for a secondary mechanism.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX135S the Right Cylinder?
Select this 40mm bore double-rod cylinder when your application demands equal push and pull forces (528N at 0.5 MPa) alongside anti-rotation guidance. If your mechanism requires less force, stepping down to the 32mm bore provides 345N both ways, while upgrading to the 50mm bore yields 825N. The twin-rod architecture inherently resists torsional loads better than a single-rod SAI cylinder, keeping the workpiece guided without external rails for short strokes.
As a dimensionally interchangeable ISO 15552 profile cylinder, it serves as a drop-in replacement for other standard double-rod units. It uses the reduced SAID mounting accessory set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Note that the adjustable air cushions only decelerate the piston near stroke end; this cylinder will drift and cannot hold a load if air pressure is lost. For position holding, consider a SAIL or BSAID 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 SAID40BX135S FAQ
Because it is a double-rod cylinder, the effective piston area is the same on both sides. It delivers an equal force of 528N in both extend and retract directions at 0.5 MPa, and 739N both ways at 0.7 MPa.
Yes, it is a profile cylinder dimensionally interchangeable per ISO 15552. You can use it as a drop-in replacement for other ISO 15552 double-rod cylinders, matching the 40mm bore, 135mm stroke, PT ports, and the standard SAID mounting interface.
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