Airtac SAID40 Double Rod Cylinder SAID40BX145S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX145S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 145mm 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
- Stroke145 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40BX145S
The AirTAC SAID40X145-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and a 145mm non-standard made-to-order stroke. Because the twin rods occupy both piston sides, the annulus area is identical in each direction, yielding exactly 528N of force at 0.5 MPa on both extend and retract strokes. It includes a magnet for position sensing.
This variant uses SUS304 stainless steel for both rods (material code B), making it ideal for corrosive environments. The rear rod extension allows you to mount a cam or position flag opposite the primary workpiece, providing dual-side guidance and superior anti-rotation control. It features PT tapered ports and adjustable air cushions at both ends to decelerate the piston near stroke limits.
Airtac SAID40 Double Rod Cylinder SAID40BX145S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX145S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 145 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 SAID40BX145S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×145 | 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 SAID40BX145S Is Used
Symmetric-Force Transfer
Drives a workpiece across a machining station where the 528N push and pull forces must be perfectly matched to prevent motor stalling or uneven clamping on the return stroke.
Anti-Rotation Slides
Utilizes the twin SUS304 rods exiting both end covers to guide a heavy vertical slide, preventing torsional twist and maintaining precise linear tracking without external guide rails.
Rear-Cam Sensing
Mounts the primary tool on the front rod and a mechanical cam on the rear protrusion to trigger physical limit switches in harsh environments where electronic sensors might fail.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX145S the Right Cylinder?
Select this 40mm bore cylinder when an application requires 528N of symmetric force both ways; if you need less force, step down to the 32mm bore (345N), or step up to the 50mm bore (825N) for heavier loads. A double-rod design is chosen over a single-rod SAI when the mechanism demands anti-rotation stability or a rear-mounted sensor flag. Because this is a 145mm stroke (non-standard), expect made-to-order lead times.
As a true ISO 15552 extruded aluminum profile cylinder, it is dimensionally interchangeable with other ISO 15552 double-rod cylinders. The -S magnet works seamlessly with AirTAC CMSE reed and DMSE electronic solid-state switches. Note that the adjustable air cushion only decelerates the piston; it does not hold a load. If position holding without air pressure is required, use an external rod lock or explore the BSAID clamp-lock 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 SAID40BX145S FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the extend and retract forces are equal. It provides 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa in both directions.
Yes, the SAID40X145-S is an extruded aluminum profile cylinder with standard ISO 15552 mounting dimensions, making it a drop-in replacement for other ISO 15552 double-rod cylinders. It uses a PT G1/4 port and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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