Airtac SAI63 Standard Cylinder SAI63X850S
The AirTAC Airtac SAI63 Standard Cylinder SAI63X850S 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 SAI63X850S
The AirTAC SAI63X850-S is a double-acting ISO 15552 profile cylinder engineered for long-stroke automation. It delivers a robust 1559 N of push force at 0.5 MPa, utilizing a 63 mm bore and an 850 mm stroke to bridge substantial operational gaps. The extruded aluminum barrel design omits tie-rods, providing a clean exterior that simplifies sensor mounting.
This specific configuration includes a magnetic piston (-S) for seamless integration with CMSE and DMSE reed switches along the dual sensor grooves. It features a standard carbon steel piston rod and PT tapered port threads. For operations experiencing thermal extremes, the standard TPU seals can be swapped for high-temperature Viton (H) or NBR (N) alternatives to match environmental demands.
Airtac SAI63 Standard Cylinder SAI63X850S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63X850S |
|---|---|
| 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 SAI63X850S
| 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 SAI63X850S Is Used
Long-Stroke Material Push
Transfers heavy pallets or workpieces across extended conveyor gaps, utilizing the 1559 N push force to overcome friction over the 850 mm travel distance.
High-Reach Diverting
Actuates diverter arms in automated sortation systems where a long reach is necessary to re-route packages into secondary downstream lanes.
Large Door Actuation
Opens and closes substantial machine guarding doors or industrial blast gates, benefiting from the smooth adjustable air cushions at both stroke ends.
Is the Airtac SAI63 Standard Cylinder SAI63X850S the Right Cylinder?
Selecting this 63 mm bore over the smaller 50 mm variant steps the 0.5 MPa push force up from 982 N to 1559 N, providing a significant uplift in work capacity. Conversely, if your application requires less than 900 N, stepping down to the 50 mm bore saves physical envelope and air consumption. The G3/8 port and M16x1.5 rod thread are standardized for this bore class.
At 850 mm of travel, the unsupported piston rod is highly susceptible to bending under side loads. Employ an external guide rail or a dedicated guided cylinder to prevent rod-bearing damage. Remember that standard double-acting cylinders drift when air pressure is removed; if your process demands static holding without constant live pressure, specify the SAIL variant with an air-released lock or the BSAI clamp-lock version.
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 SAI63X850S FAQ
At 0.5 MPa, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 2182 N.
Yes, the SAI63X850-S is dimensionally interchangeable per ISO 15552. It serves as a drop-in replacement for other ISO 15552 profile cylinders, matching standard mounting accessories and envelope dimensions.
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