Airtac SAID40 Double Rod Cylinder SAID40BX220
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX220 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 220mm 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
- Stroke220 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40BX220
The AirTAC SAID40X220 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 220mm stroke. Because a stainless steel SUS304 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 (739 N at 0.7 MPa). This symmetric output is ideal for twin-station actuation and anti-rotation slides.
The through-rod design allows mounting a workpiece on the front and a position flag or cam on the rear. The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE solid-state switches (requires an -S magnet). It uses a PT G1/4 port, M12x1.25 rod thread, and adjustable air cushions at both ends (30mm stroke absorption) to decelerate smoothly.
Airtac SAID40 Double Rod Cylinder SAID40BX220 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX220 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 220 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 SAID40BX220
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×220 | 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 SAID40BX220 Is Used
Symmetric Force Transfer
Provides exactly 528 N of force in both extend and retract directions, ensuring consistent speed and pressure for push-pull transfer mechanisms.
Anti-Rotation Slides
The twin SUS304 rods keep the load guided against rotation better than a single rod, stabilizing vertical lifting and pressing tools.
Through-Rod Sensing
Drives the primary workpiece on the front while the rear rod end carries a position flag to trigger CMSE or DMSE sensors externally.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX220 the Right Cylinder?
Choose this 40mm bore when an application requires equal push and pull forces (528 N both ways at 0.5 MPa) and higher corrosion resistance than standard carbon steel. If you need less force, the 32mm bore offers 345 N; if you need more, the 50mm bore provides 825 N. The double-rod architecture is selected over a single-rod SAI when dual-side guidance, rear-rod sensing, or anti-rotation stability is required. Note that the standard SAID does not hold position if air pressure is lost; for load-holding, consider the SAIL or BSAID clamp-lock variants.
At 220mm stroke, the unsupported rod length is moderate, but external guidance is recommended if side loads are present. This cylinder is dimensionally interchangeable per ISO 15552, serving as a drop-in replacement for other ISO 15552 double-rod cylinders. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2 (FB, CA, CB, and CR are omitted). Operating speed is 30-800 mm/s.
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 SAID40BX220 FAQ
Because the rod occupies both sides of the piston, the effective area is the same in both directions. It delivers 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 SAID40X220 is dimensionally interchangeable per ISO 15552. It uses the standard mounting footprint and accepts PT G1/4 ports, making it a drop-in replacement for other ISO 15552 double-rod cylinders.
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