Airtac SAI63 Standard Cylinder SAI63BX185S
The AirTAC Airtac SAI63 Standard Cylinder SAI63BX185S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 185mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ63 mm
- Stroke185 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 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 SAI63 Standard Cylinder SAI63BX185S
The AirTAC SAI63X185-S is a double-acting ISO 15552 profile cylinder featuring a 63mm bore and a 185mm stroke. Because 185mm is outside the standard stroke increments, it is manufactured as a non-standard, made-to-order stroke length. It delivers a robust 1559 N of push force at 0.5 MPa, making it well-suited for medium-duty industrial handling.
This specific configuration includes a SUS304 stainless steel piston rod (option B) for superior corrosion resistance in humid or chemically active settings. The integrated magnet (-S) allows direct mounting of CMSE or DMSE sensor switches along the dual grooves on the extruded aluminum barrel, providing precise end-of-stroke detection.
Airtac SAI63 Standard Cylinder SAI63BX185S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63BX185S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 185 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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, 36 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAI63 Standard Cylinder SAI63BX185S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | 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 SAI63 Standard Cylinder SAI63BX185S Is Used
Stainless Material Handling
The SUS304 rod resists washdown environments, making this 1559 N cylinder ideal for food processing or packaging lines where moisture is present.
Pallet Diverting
A 185mm stroke provides the exact reach needed to push standard pallets onto secondary conveyor tracks without overshooting.
Component Ejection
Delivers reliable 0.5 MPa thrust to knock finished molded parts out of heavy-duty dies, using the magnet to confirm retraction.
Is the Airtac SAI63 Standard Cylinder SAI63BX185S the Right Cylinder?
When sizing this actuator, consider stepping down to a 50mm bore if your application only requires 982 N of push force at 0.5 MPa, which saves space and air consumption. Conversely, if your load demands more thrust, an 80mm bore provides 2513 N at the same pressure. Since this model has a 185mm stroke, it is below the 300mm threshold where heavy side-load bending typically becomes a major concern, but keeping the load axially aligned remains critical for rod-bearing longevity.
As a true ISO 15552 profile cylinder, it provides a direct mounting interface replacement for other ISO 15552 actuators with a 63mm bore, G3/8 PT port, and 185mm stroke. Remember that a standard SAI cylinder relies on live air pressure to hold its load; the adjustable air cushions only decelerate the piston near the stroke ends and do not act as a locking brake. If your system loses pressure, the load will drift.
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 SAI63 Standard Cylinder SAI63BX185S FAQ
At 0.5 MPa, this 63mm bore cylinder provides 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
Yes, the SAI series is dimensionally interchangeable per ISO 15552. You can drop it in as a replacement for any 63mm bore ISO 15552 cylinder with a 185mm stroke, matching the G3/8 port and mounting footprint.
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