Airtac SAI63 Standard Cylinder SAI63AX85
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX85 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 SAI63AX85
The AirTAC SAI63X85 is a double-acting ISO 15552 profile cylinder featuring a 63mm bore and an 85mm stroke. Because 85mm is not a standard factory increment, it is manufactured as a non-standard stroke to provide exact motion control for specialized tooling. It delivers a robust 1559 N of push force at 0.5 MPa, making it well-suited for moderate-to-heavy industrial pushing and clamping tasks.
This unit is configured with a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. It utilizes PT tapered port threads and lacks a magnet. If position sensing is required, the -S magnet option and CMSE or DMSE switches can be specified to drop into the dual sensor grooves machined into the extruded aluminum barrel.
Airtac SAI63 Standard Cylinder SAI63AX85 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX85 |
|---|---|
| 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 SAI63AX85
| 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 SAI63AX85 Is Used
Custom Tooling Clamps
Provides 1559 N of clamping force at 0.5 MPa for specialized machining fixtures requiring an exact 85mm travel distance.
Forming Presses
Ideal for medium-duty stamping or forming operations where the SUS420J2 rod offers reliable resistance to shop-floor moisture.
Product Diverters
Drives mid-weight diverter arms on packaging lines, utilizing the adjustable air cushions to decelerate the payload smoothly.
Is the Airtac SAI63 Standard Cylinder SAI63AX85 the Right Cylinder?
Select this 63mm bore when a 50mm bore (982 N push at 0.5 MPa) lacks the necessary thrust, but an 80mm bore (2513 N push at 0.5 MPa) would be physically oversized. The 85mm stroke is a custom length, so verify your exact end-of-stroke margins. Because the stroke is under 300mm, side-load stress on the rod bearing is minimal, though external guides are always recommended for rigid loads.
As an ISO 15552 profile cylinder, it provides a dimensionally interchangeable mounting interface for drop-in replacements alongside other ISO 15552 cylinders. Ensure your setup uses the G3/8 PT ports and compatible mounting accessories like FA flanges or TC trunnions. Note that standard SAI cylinders do not hold loads when air pressure is removed; for dead-load holding, consider the SAIL variant with an air-released lock.
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 SAI63AX85 FAQ
At 0.5 MPa operating pressure, this 63mm bore cylinder generates 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 is a genuine ISO 15552 profile cylinder, meaning its mounting dimensions are interchangeable with other ISO 15552 cylinders. Match the 63mm bore, 85mm stroke, and G3/8 port size for a drop-in fit.
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