Airtac SAI63 Standard Cylinder SAI63AX850S
The AirTAC Airtac SAI63 Standard Cylinder SAI63AX850S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 850mm 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
- Stroke850 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63AX850S
The AirTAC SAI63X850-S is a double-acting ISO 15552 profile cylinder featuring a 63mm bore and an 850mm stroke. It delivers a robust push force of 1559 N and a pull force of 1402 N at 0.5 MPa, making it highly effective for driving heavy loads over extended distances. The extruded aluminum barrel design omits tie rods, providing a clean exterior that seamlessly integrates into modern machinery.
This specific configuration includes a magnetic piston (-S) for non-contact position detection using CMSE or DMSE series switches. It is equipped with a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and utilizes PT tapered port threads. Adjustable air cushions at both ends ensure smooth end-of-stroke deceleration, protecting your equipment from impact damage.
Airtac SAI63 Standard Cylinder SAI63AX850S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63AX850S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 850 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 SAI63AX850S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×850 | 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 SAI63AX850S Is Used
Extended Material Handling
Drives long-travel conveyor diverter gates and heavy pushers across 850mm strokes, utilizing the 1559 N push force to shift palletized goods reliably.
Automated Assembly Press
Applies consistent clamping or pressing force over a long cycle distance, benefiting from the adjustable end cushions to protect tooling from shock.
Large Format Packaging
Actuates oversized carton erecting and sealing mechanisms where a lengthy 850mm reach is required to accommodate large packaging dimensions.
Is the Airtac SAI63 Standard Cylinder SAI63AX850S the Right Cylinder?
When selecting this cylinder, verify that the 1559 N output at 0.5 MPa is sufficient for your load; if higher force is needed, stepping up to the 80mm bore provides 2513 N. Because this model features an 850mm stroke, the extended rod is highly susceptible to bending under side loads. To prevent premature wear on the rod bearing, implement an external guide rail or choose a fully guided cylinder to handle lateral forces.
As a true ISO 15552 profile cylinder, it provides a drop-in replacement for any standard 63mm bore, 850mm stroke ISO 15552 unit. Ensure you specify the PT port thread, the -S magnet for sensor tracking, and compatible mounting accessories like an FA flange or TC trunnion. Note that standard air cushions only decelerate the piston; they do not lock the rod. If the application requires position holding upon loss of air pressure, consider the SAIL variant or an external rod 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 SAI63AX850S FAQ
At an operating pressure of 0.5 MPa, this 63mm bore double-acting cylinder generates a push force of 1559 N and a pull force of 1402 N.
Yes, the SAI series is dimensionally interchangeable per ISO 15552 standards. You can use it as a drop-in replacement for other 63mm bore ISO 15552 profile cylinders with matching strokes.
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