Airtac SAID200 Double Rod Cylinder SAID200BX85
The AirTAC Airtac SAID200 Double Rod Cylinder SAID200BX85 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 85mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ200 mm
- Stroke85 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAID200 Double Rod Cylinder SAID200BX85
The AirTAC SAID200X85 is a double-acting, double-rod ISO 15552 profile cylinder engineered for heavy-duty symmetrical motion. Because a stainless steel SUS304 rod exits both end covers, the annulus area is identical on extend and retract, yielding an equal 15079 N of force in each direction at 0.5 MPa. This through-rod architecture is ideal for driving a primary workpiece on one end while mounting a cam or position flag on the opposite rear extension.
Built with a robust extruded aluminum barrel, the cylinder features adjustable air cushioning at both ends to decelerate the massive piston smoothly. It omits the FB, CA, CB, and CR mounts, utilizing a focused set of ISO 15552 accessories: Basic, FA, LB, TC, FTC, TCM1, and TCM2. Note that the rear protruding rod requires additional clearance in your machine layout compared to a single-rod SAI variant.
Airtac SAID200 Double Rod Cylinder SAID200BX85 Technical Specifications
| Model | Airtac SAID200 Double Rod Cylinder SAID200BX85 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 85 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max stroke | Up to 1500 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 (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAID200 Double Rod Cylinder SAID200BX85
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×85 | 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 SAID200 Double Rod Cylinder SAID200BX85 Is Used
Heavy-Duty Symmetric Press
Utilizes the equal 15079 N both-way force to execute balanced forming and stamping operations without force disparity between strokes.
Twin-Station Actuator
Drives two separate mechanisms simultaneously using both rod ends, ensuring perfectly synchronized movement for multi-axis assembly lines.
Anti-Rotation Guide Slide
Leverages the dual SUS304 rods to prevent mechanical twisting under high off-center loads, maintaining strict alignment during heavy material transfer.
Is the Airtac SAID200 Double Rod Cylinder SAID200BX85 the Right Cylinder?
Select this 200 mm bore when your mechanism demands identical push and pull forces, such as 15079 N at 0.5 MPa or 21110 N at 0.7 MPa. If your application requires less force, stepping down to the 160 mm bore provides 9425 N each way at 0.5 MPa, whereas moving up is impossible within the standard AirTAC profile range. The 40 mm SUS304 rod provides exceptional rigidity and side-load resistance, though an external guide is still recommended for any off-center loads.
The twin-rod design inherently resists rotation and allows dual-side actuation, making it superior to a single-rod SAI when precise angular orientation is critical. Remember that the adjustable air cushions only decelerate the piston near stroke end; they do not hold the load. If air pressure is lost, the cylinder will drift, so an external rod lock or a BSAID clamp-lock cylinder is required for fail-safe position holding.
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 SAID200 Double Rod Cylinder SAID200BX85 FAQ
The double-rod design provides equal force in both directions. It delivers 15079 N at 0.5 MPa, 21110 N at 0.7 MPa, and 27141 N at 0.9 MPa.
Yes, the SAID200X85 is dimensionally interchangeable per ISO 15552. It uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and requires extra rear clearance for the protruding rod.
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