Airtac SAID200 Double Rod Cylinder SAID200BX185S
The AirTAC Airtac SAID200 Double Rod Cylinder SAID200BX185S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 185mm 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
- Stroke185 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAID200 Double Rod Cylinder SAID200BX185S
The AirTAC SAID200X185-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 200mm bore and 185mm stroke. Because the twin rods occupy both sides of the piston, the annulus area is identical in each direction. This delivers an equal 15079 N of force at 0.5 MPa on extend and retract, eliminating speed and power mismatch. A rod physically exits both end covers.
This specific configuration includes a SUS304 stainless steel rod (option B) for superior corrosion resistance and a piston magnet (-S) for position sensing. The extruded aluminum barrel includes sensor grooves on both sides, accepting AirTAC CMSE reed and DMSE electronic solid-state switches. It uses adjustable air cushions at both ends to decelerate the payload smoothly.
Airtac SAID200 Double Rod Cylinder SAID200BX185S Technical Specifications
| Model | Airtac SAID200 Double Rod Cylinder SAID200BX185S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 185 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 SAID200BX185S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | 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 SAID200 Double Rod Cylinder SAID200BX185S Is Used
Anti-Rotation Slides
The through-rod design keeps heavy guided loads perfectly parallel, preventing torsional twist during heavy material transfer.
Symmetric-Force Transfer
Delivers identical 15079 N push and pull forces at 0.5 MPa, ensuring perfectly balanced dual-station actuation without pressure compensation.
Dual-Side Tooling
Mount the primary workpiece on the front rod end and a secondary cam or position flag on the rear rod end for complex sequencing.
Is the Airtac SAID200 Double Rod Cylinder SAID200BX185S the Right Cylinder?
Choose this 200mm bore when an application demands high bidirectional force (15079 N at 0.5 MPa, scaling to 27141 N at 0.9 MPa). If you need less force, stepping down to the 160mm bore yields 9425 N at 0.5 MPa. The double-rod architecture is selected over a single-rod SAI when the mechanism requires dual-side guidance to prevent rotation, or when a rear flag is needed to trigger secondary sensors. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2.
At 185mm stroke, side-load stress is moderate, but the 40mm rod diameter provides excellent bearing support. For any stroke of 300mm or more, an external guide rail is mandatory to prevent rod-bearing bending. Note that this cylinder does not hold its load if air pressure drops; use a BSAID clamp-lock or external pilot-operated check valve for fail-safe holding. It is dimensionally interchangeable per ISO 15552.
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 SAID200BX185S FAQ
Because it is a double-rod cylinder, the effective area is the same in both directions. It provides an equal 15079 N of force at 0.5 MPa, and 27141 N at 0.9 MPa on both extend and retract strokes.
Yes, the SAID200X185-S is dimensionally interchangeable per ISO 15552. It uses a PT G3/4 port and shares the standard mounting footprint, though it requires extra rear clearance for the protruding rod.
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