Airtac SAID50 Double Rod Cylinder SAID50BX185
The AirTAC Airtac SAID50 Double Rod Cylinder SAID50BX185 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 185mm 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
- Stroke185 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 SAID50BX185
The AirTAC SAID50X185 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 50mm bore and 185mm stroke. Because a piston rod extends from both end covers, the annulus area is identical on the extend and retract strokes, yielding an equal push and pull force of 825N at 0.5 MPa. This through-rod geometry provides superior anti-rotation guidance and allows mounting a secondary tool, cam, or position flag on the rear rod end.
This specific configuration features a SUS304 stainless steel rod (material code B) for enhanced corrosion resistance in harsher environments. The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE electronic switches, though this unit is specified without a magnet. It utilizes PT tapered port threads (G1/4) and includes adjustable air cushioning at both ends to decelerate the piston smoothly near stroke limits.
Airtac SAID50 Double Rod Cylinder SAID50BX185 Technical Specifications
| Model | Airtac SAID50 Double Rod Cylinder SAID50BX185 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 185 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 SAID50BX185
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×185 | 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 SAID50BX185 Is Used
Symmetric Force Transfer
Ideal for shuttle mechanisms requiring identical 825N push and pull forces at 0.5 MPa, ensuring consistent kinetic performance in both travel directions.
Anti-Rotation Slides
The dual-rod construction prevents piston rotation, providing precise linear guidance for handling components that cannot twist during transit.
Rear-Rod Cam Actuation
The protruding rear rod end can drive a secondary mechanism or cam, allowing one cylinder to simultaneously trigger a positional limit or secondary process.
Is the Airtac SAID50 Double Rod Cylinder SAID50BX185 the Right Cylinder?
Select this 50mm bore double-rod cylinder when an application demands equal bidirectional force and high torsional stability, stepping up from the 40mm bore (528N both ways) for greater thrust, or down from the 63mm bore (1402N both ways) if space is constrained. A twin-rod design is specifically chosen over a single-rod SAI when the mechanism requires dual-side guidance, symmetric transfer, or rear-rod actuation. Note that a plain SAID does not hold its load if air pressure is lost; for position holding, consider an external pilot-operated check valve or the SAIL lock series.
For drop-in interchangeability, this model matches standard ISO 15552 mounting interface dimensions and uses the reduced SAID accessory set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Since the 185mm stroke is below the 300mm threshold, side-load stress on the rod bearing is moderate, but always ensure the rear rod has adequate clearance to protrude fully without collision.
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 SAID50BX185 FAQ
Because the double-rod design occupies area on both sides of the piston, the effective annulus area is identical in both directions. It delivers an equal force of 825N at 0.5 MPa, 1154N at 0.7 MPa, and 1484N at 0.9 MPa for both extension and retraction.
Yes, the SAID50X185 is dimensionally interchangeable with other ISO 15552 double-rod profile cylinders regarding its mounting footprint. It uses a PT G1/4 port and supports the SAID mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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