Airtac SAID200 Double Rod Cylinder SAID200BX85S
The AirTAC Airtac SAID200 Double Rod Cylinder SAID200BX85S 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 SAID200BX85S
The AirTAC SAID200X85-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a through-rod design where a single piston drives rods out of both end covers. Because the rod occupies both sides of the piston, the effective annulus area is identical in both directions, yielding an equal extend and retract force of 15079 N at 0.5 MPa. This symmetric thrust makes it ideal for mechanisms requiring consistent bidirectional power.
This specific configuration includes a SUS304 stainless steel rod (option B) for superior corrosion resistance and a built-in magnet (-S) for position sensing. The extruded aluminum barrel features sensor grooves on both sides, compatible with AirTAC CMSE reed and DMSE electronic solid-state switches. Adjustable air cushions at both ends decelerate the piston near stroke end to minimize impact.
Airtac SAID200 Double Rod Cylinder SAID200BX85S Technical Specifications
| Model | Airtac SAID200 Double Rod Cylinder SAID200BX85S |
|---|---|
| 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 SAID200BX85S
| 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 SAID200BX85S Is Used
Anti-Rotation Slides
The twin-rod design prevents piston rotation, providing precise linear guidance for heavy-duty machining slides and material handling frames.
Symmetric Force Transfer
Delivers equal push and pull forces of 15079 N at 0.5 MPa, ensuring stable and consistent performance in both directions for heavy press operations.
Rear Rod Sensing
The protruding rear rod accommodates a secondary position flag or cam, driving external limit sensors while the front rod handles the primary workload.
Is the Airtac SAID200 Double Rod Cylinder SAID200BX85S the Right Cylinder?
Choose this 200 mm bore cylinder when an application demands massive symmetric force, as both the extend and retract strokes deliver 15079 N at 0.5 MPa. If you need less force, stepping down to the 160 mm bore yields 9425 N both ways. The double-rod architecture is selected over a single-rod SAI when the mechanism requires dual-side guidance, anti-rotation stability, or a rear rod end to mount a secondary cam or position flag.
This model uses a PT tapered G3/4 port thread and the standard ISO 15552 mounting interface. Be aware that a plain SAID does not hold its load when air pressure is lost or exhausted; the piston will drift without live pressure. For position holding, consider the SAIL lock or BSAID clamp-lock variants. Since the stroke is 85 mm, side-load stress on the rod bearing is minimal, though external guides are recommended for heavily offset loads.
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 SAID200BX85S FAQ
Because it is a double-rod cylinder, the effective piston area is the same on both sides. It delivers an equal extend and retract force of 15079 N at 0.5 MPa, and 21110 N at 0.7 MPa.
The SAID200X85-S is dimensionally interchangeable per ISO 15552 profile cylinder standards. It shares the exact same mounting footprint and barrel dimensions, allowing it to drop-in replace other ISO 15552 double-rod cylinders.
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