Airtac SAID40 Double Rod Cylinder SAID40BX165
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX165 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 165mm 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
- Stroke165 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40BX165
The AirTAC SAID40X165 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and a 165mm made-to-order stroke. Because a rod exits both end covers, the annulus area is identical on extend and retract, yielding equal push and pull forces of 528N at 0.5 MPa. This through-rod architecture is ideal for mounting a workpiece on the front and a position flag or cam on the rear.
This variant uses a SUS304 stainless steel rod for superior corrosion resistance and includes PT tapered port threads. The extruded aluminum barrel integrates sensor grooves on both sides. Note that the overall length is longer than a single-rod unit, requiring extra rear clearance to accommodate the protruding rod.
Airtac SAID40 Double Rod Cylinder SAID40BX165 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX165 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 165 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 SAID40BX165
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×165 | 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 SAID40BX165 Is Used
Symmetric Force Transfer
Drives a transfer mechanism where the equal 528N push and pull force at 0.5 MPa ensures consistent momentum and cycle times regardless of the direction of travel.
Anti-Rotation Slides
Utilizes the twin-rod guidance to prevent mechanical twisting during vertical lifting, keeping the load perfectly aligned without external guides.
Rear-Cam Actuation
Mounts the primary tool on the front rod end while using the rear rod protrusion to drive a secondary cam or trigger a remote mechanical limit switch.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX165 the Right Cylinder?
Select this 40mm bore when an application requires symmetric force and speed in both directions, offering 528N each way at 0.5 MPa. If your mechanism needs less force, stepping down to the 32mm bore provides 345N both ways. Choosing a double-rod design over a single-rod SAI provides superior anti-rotation guidance and enables dual-side actuation. Because this is a 165mm stroke, it is a non-standard made-to-order length.
This cylinder uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR. It is dimensionally interchangeable per ISO 15552 as a drop-in replacement for other standard profile cylinders. Remember that the adjustable air cushions only decelerate the piston near stroke end; they do not hold a load. If position holding without air pressure is required, 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 SAID40BX165 FAQ
Because the double-rod design subtracts the rod area on both sides, the extend and retract forces are equal. It outputs 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa in both directions.
Yes, it is dimensionally interchangeable per ISO 15552. However, the 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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