Airtac SAID50 Double Rod Cylinder SAID50BX40
The AirTAC Airtac SAID50 Double Rod Cylinder SAID50BX40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 40mm 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.
- BoreØ50 mm
- Stroke40 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- 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 SAID50 Double Rod Cylinder SAID50BX40
The AirTAC SAID50X40 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 50mm bore and 40mm stroke. Because a stainless steel rod protrudes from both end covers, the annulus area is identical on both sides, yielding equal push and pull forces. This cylinder generates 825N of thrust in both directions at 0.5 MPa, operating seamlessly between 30-800 mm/s.
Equipped with SUS304 stainless steel rods, this variant offers superior corrosion resistance for demanding environments. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed and DMSE electronic switches. The rear rod end can simultaneously drive a secondary mechanism or position flag while keeping the load guided against rotation.
Airtac SAID50 Double Rod Cylinder SAID50BX40 Technical Specifications
| Model | Airtac SAID50 Double Rod Cylinder SAID50BX40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAID50 Double Rod Cylinder SAID50BX40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×40 | 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 SAID50 Double Rod Cylinder SAID50BX40 Is Used
Symmetric Force Transfer
Ideal for pressing and transferring components where the 825N extend and retract forces must be perfectly matched to prevent machine binding.
Anti-Rotation Slides
The twin-rod design inherently resists torsional loads, keeping linear slides and workpieces rigidly guided without external rails.
Through-Rod Sensing
The rear rod extension provides a convenient mounting point for a cam or DMSE sensor flag to track position from the opposite side.
Is the Airtac SAID50 Double Rod Cylinder SAID50BX40 the Right Cylinder?
Select this 50mm bore model when an application demands 825N of symmetrical force at 0.5 MPa, stepping up from the 40mm bore which provides 528N. A double-rod configuration is chosen over a single-rod SAI when dual-side guidance, anti-rotation, or rear-rod actuation is required. As a true ISO 15552 profile cylinder, it serves as a drop-in replacement matching standard 50mm bore dimensions and G1/4 PT ports.
Note that the adjustable air cushions at both ends only decelerate the piston near stroke end; they do not hold a load. If position holding without live air pressure is needed, consider an external rod lock or a BSAID clamp-lock cylinder. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAID50 Double Rod Cylinder SAID50BX40 FAQ
Because the double-rod design subtracts the rod area on both sides, the extend and retract forces are equal. It delivers 825N at 0.5 MPa, 1154N at 0.7 MPa, and 1484N at 0.9 MPa in both directions.
Yes, the SAID50X40 is dimensionally interchangeable per ISO 15552 profile cylinder standards. You can use it as a drop-in replacement sharing the standard mounting interface and G1/4 PT port size.
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