Airtac SAID40 Double Rod Cylinder SAID40BX800
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX800 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 800mm 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
- Stroke800 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
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About the Airtac SAID40 Double Rod Cylinder SAID40BX800
The AirTAC SAID40X800 is a double-acting, double-rod ISO 15552 profile cylinder engineered for applications requiring equal force and speed in both directions. Because the SUS304 stainless steel rod exits both end covers, the annulus area is identical on extend and retract, yielding a consistent 528 N output each way at 0.5 MPa. This through-rod geometry also provides superior resistance to torsional loads compared to a single-rod SAI.
This specific configuration utilizes PT tapered port threads and G1/4 ports. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches, though a magnet is not specified for this unit. At an 800 mm stroke, the overall physical length is notably extended to accommodate the rear rod protrusion, requiring additional clearance in your machine layout.
Airtac SAID40 Double Rod Cylinder SAID40BX800 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX800 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 800 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 SAID40BX800
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×800 | 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 SAID40BX800 Is Used
Twin-Station Actuation
Drives two synchronized workstations simultaneously from a single piston, utilizing the equal 528 N force on both the extend and retract strokes for balanced part processing.
Anti-Rotation Slides
The dual SUS304 rods prevent the carriage from twisting under offset loads, ensuring precise linear movement over the 800 mm travel without needing external guides.
Rear-Cam Triggering
Mounts a cam or position flag on the rear rod end to mechanically trigger limit valves or actuators independently from the primary front-side tooling.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX800 the Right Cylinder?
Selecting this 40 mm bore over the smaller SAID32X800 upgrades your bidirectional force from 345 N to 528 N at 0.5 MPa, while stepping up to the SAID50X800 increases it further to 825 N. A twin-rod design is chosen over a single-rod cylinder when you need to drive a secondary mechanism from the rear or require strict anti-rotation guidance for a heavy carriage.
As a dimensionally interchangeable ISO 15552 component, it drops in seamlessly with standard mounting accessories like Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because the stroke is 800 mm, the long unsupported piston rod is susceptible to bending under side loads; always use an external linear guide to support the workpiece. Note that this cylinder relies on adjustable air cushions at both ends to decelerate the piston and will not hold a load if air pressure is lost—use a SAIL or BSAID variant if locking is required.
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 SAID40BX800 FAQ
Because it is a double-rod cylinder, the force is identical in both directions. It provides 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa for both extend and retract strokes.
Yes, the SAID40X800 is dimensionally interchangeable per ISO 15552 profile standards. It shares the same mounting footprint and G1/4 ports as comparable cylinders, though you must ensure your layout accommodates the rear rod protrusion.
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