Airtac SAI63 Standard Cylinder SAI63BX85
The AirTAC Airtac SAI63 Standard Cylinder SAI63BX85 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 85mm 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
- Stroke85 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
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About the Airtac SAI63 Standard Cylinder SAI63BX85
The AirTAC SAI63X85 is a double-acting ISO 15552 profile cylinder featuring a 63mm bore and an 85mm stroke. It generates a push force of 1559 N and a pull force of 1402 N at 0.5 MPa, making it well-suited for medium-duty industrial actuation.
This specific configuration incorporates a SUS304 stainless steel piston rod for superior corrosion resistance in wet or chemically exposed settings. It utilizes PT tapered port threads and lacks an internal magnet; for position sensing, a magnet-equipped -S variant would be required to mount CMSE or DMSE switches along the extruded aluminum barrel's dual sensor grooves.
Airtac SAI63 Standard Cylinder SAI63BX85 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63BX85 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 85 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 SAI63BX85
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | 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 SAI63 Standard Cylinder SAI63BX85 Is Used
Component Clamping
Secures medium-sized metal or plastic workpieces on machining fixtures, utilizing its 1559 N push force to maintain rigid positioning during secondary operations.
Package Diverting
Actuates diverter arms or pusher plates on packaging lines, where the 85mm stroke provides sufficient travel to redirect cartons between adjacent conveyor belts.
Assembly Pressing
Applies steady downward pressure for pressing bushings or pins into housings, taking advantage of the stable ISO 15552 mounting interface and consistent thrust.
Is the Airtac SAI63 Standard Cylinder SAI63BX85 the Right Cylinder?
Stepping down to a 50mm bore reduces the push force to 982 N at 0.5 MPa, whereas moving up to an 80mm bore increases it to 2513 N. Because the 85mm stroke is under 300mm, side-load stress on the rod bearing is minimal, though external guides should still be used for heavy offset loads.
As a dimensionally interchangeable ISO 15552 profile cylinder, it serves as a direct replacement for other standard ISO 15552 actuators. To match this exact unit, specify a 63mm bore, 85mm stroke, PT G3/8 port thread, no magnet, and SUS304 rod material. Note that this standard cylinder cannot hold a load if air pressure is lost; for dead-drop prevention, consider the SAIL locking variant.
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 SAI63BX85 FAQ
At 0.5 MPa, the SAI63X85 generates a push force of 1559 N and a pull force of 1402 N. If operating pressure is increased to 0.7 MPa, the push force reaches 2182 N.
Yes. As a true ISO 15552 profile cylinder, its mounting and dimensional interface is standardized, allowing it to serve as a direct replacement for other ISO 15552 conforming cylinders without altering the machine footprint.
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