Airtac SAI63 Standard Cylinder SAI63AX85S
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX85S 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ63 mm
- Stroke85 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX85S
The AirTAC SAI63X85-S is a double-acting ISO 15552 profile cylinder engineered for precise linear motion. Delivering a push force of 1559 N at 0.5 MPa, this 63 mm bore unit is built to handle demanding industrial workloads. The 85 mm stroke is a non-standard, made-to-order length, providing exact travel for specialized machine layouts.
This variant features a SUS420J2 stainless steel piston rod for enhanced corrosion resistance in humid environments. Equipped with a magnet (-S), it supports CMSE and DMSE sensor switches via the dual-sided extruded aluminum barrel grooves. Fluid ports use a PT tapered thread, and the adjustable air cushions at both ends ensure smooth end-of-stroke deceleration.
Airtac SAI63 Standard Cylinder SAI63AX85S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX85S |
|---|---|
| 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 SAI63AX85S
| 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 SAI63AX85S Is Used
Automated Clamping
Provides 1559 N of push force at 0.5 MPa for securing heavy metal components during CNC machining or welding operations.
Product Diverting
Uses the specialized 85 mm stroke to push heavy packages or pallets across conveyor lanes in high-speed sorting hubs.
Material Lift
Lifts medium-weight workpieces between processing stations, utilizing the SUS420J2 stainless rod to resist shop floor moisture.
Is the Airtac SAI63 Standard Cylinder SAI63AX85S the Right Cylinder?
Select this 63 mm bore model when a 50 mm bore (982 N at 0.5 MPa) lacks the necessary thrust, but an 80 mm bore (2513 N at 0.5 MPa) would be physically oversized. The 85 mm stroke is ideal for short, high-force clamping or lifting tasks.
Because this is a non-standard 85 mm stroke, ensure your mounting layout accommodates the exact extended length. The adjustable air cushioning only decelerates the piston near stroke end; it does not lock or hold the load. If your application requires position holding without live air pressure, integrate the SAIL (air-released lock) or BSAI (clamp-lock) variant. As a true ISO 15552 profile cylinder, it serves as a drop-in replacement for other ISO 15552 cylinders, matching the 63 mm bore, 85 mm stroke, G3/8 PT ports, and standard mounting accessories like FA flanges.
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 SAI63AX85S FAQ
At 0.5 MPa operating pressure, this 63 mm 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 SAI63X85-S is dimensionally interchangeable per ISO 15552 mounting interface dimensions. You can swap it with other ISO 15552 profile cylinders of the same 63 mm bore and 85 mm stroke, utilizing the standard G3/8 PT ports and compatible mounting accessories.
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