Airtac SAID40 Double Rod Cylinder SAID40BX210
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX210 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 210mm 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
- Stroke210 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAID40 Double Rod Cylinder SAID40BX210
The AirTAC SAID40X210 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 210mm stroke. Because a rod exits both end covers, the annulus area is identical on extend and retract, yielding exactly 528N of force in both directions at 0.5 MPa. The twin rods provide inherent anti-rotation guidance, allowing you to mount a primary workpiece on one end and a cam or position flag on the opposite rear rod.
This unit uses SUS304 stainless steel for both rods (material code B), offering superior corrosion resistance for harsh environments. It includes adjustable air cushions at both ends to decelerate the piston smoothly, and the extruded aluminum barrel features sensor grooves on both sides for mounting CMSE reed or DMSE solid-state switches. Note that the through-rod design makes the overall length longer than a single-rod SAI, requiring extra rear clearance.
Airtac SAID40 Double Rod Cylinder SAID40BX210 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX210 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 210 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 SAID40BX210
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×210 | 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 SAID40BX210 Is Used
Symmetric Transfer Unit
Drives a transfer shuttle where equal push and pull forces (528N at 0.5 MPa) ensure consistent cycle times in both directions without pressure compensation.
Anti-Rotation Slide
Twin rods guide a vertical lifting slide, preventing twist and binding without requiring external linear bearings for the payload.
Rear-Cam Actuation
The front rod clamps a part while the protruding rear rod actuates a mechanical limit flag or secondary cam simultaneously.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX210 the Right Cylinder?
Choose this 40mm bore when your application requires symmetric force and speed both ways, stepping up from the 32mm bore (which provides 345N each way at 0.5 MPa) or stepping down from the 50mm bore (825N each way). The double-rod architecture is selected over a single-rod SAI when you need dual-side guidance to prevent rotation, or when a rear rod must drive a secondary mechanism. The PT port threads and standard 210mm stroke make it a drop-in replacement for any ISO 15552 double-rod cylinder of the same dimensions.
Because the stroke is 210mm, the unsupported load length increases bending stress on the rod bearings; for heavy radial loads, use an external guide rail. A plain SAID does not hold its position if air pressure is lost—the piston will drift—so if dead-fall prevention is required, consider the SAIL lock or BSAID clamp-lock series. Mounting options for this cylinder include Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
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 SAID40BX210 FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the force is equal in both directions. It provides 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa for both extend and retract strokes.
Yes, the SAID40X210 is dimensionally interchangeable per ISO 15552. You can swap it directly for other ISO 15552 profile-type double-rod cylinders with a 40mm bore and 210mm stroke, matching the PT port and mounting interface.
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