Airtac SAI63 Standard Cylinder SAI63X900S
The AirTAC Airtac SAI63 Standard Cylinder SAI63X900S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 900mm 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
- Stroke900 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAI63 Standard Cylinder SAI63X900S
The AirTAC SAI63X900-S is a double-acting ISO 15552 profile cylinder featuring a 63mm bore and a 900mm stroke. Because this stroke exceeds the standard 1500mm limit for this bore family, it is manufactured as a made-to-order unit to suit extended-trroke automation layouts. It generates 1559N of push force at 0.5 MPa, making it well-suited for moving moderate loads over long distances.
This variant includes a standard carbon steel piston rod and a built-in magnet (-S) for position sensing. The extruded aluminum barrel features sensor grooves on both sides, allowing you to mount CMSE or DMSE reed switches directly along the stroke without requiring external brackets.
Airtac SAI63 Standard Cylinder SAI63X900S Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63X900S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 900 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 SAI63X900S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×900 | 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 SAI63X900S Is Used
Extended Transfer Lines
Pushes pallets or workpieces between distant processing stations on a 900mm stroke axis.
Elevator Diverter
Actuates routing gates or lifts on automated assembly lines requiring a long reach.
Deep Bin Pushout
Ejects stacked components from deep storage magazines over a long linear path.
Is the Airtac SAI63 Standard Cylinder SAI63X900S the Right Cylinder?
Stepping up to an 80mm bore increases the 0.5 MPa push force to 2513N if your payload exceeds the 1559N rating of this 63mm unit. Conversely, dropping to a 50mm bore reduces the output to 982N for lighter fixtures.
Because this model features a 900mm stroke, the unsupported rod is highly susceptible to bending under side loads. Do not use the cylinder alone to guide heavy off-center payloads; instead, use an external guide rail or a fully guided cylinder mechanism to protect the rod bearing from premature wear. Note that this cylinder relies on adjustable air cushions at both ends to decelerate the piston; it cannot hold a load in place if air pressure drops. For dead-end holding, specify a SAIL pneumatic lock 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 SAI63X900S FAQ
At 0.5 MPa, the SAI63X900-S provides 1559N of push force and 1402N of pull force. At 0.7 MPa, the push force increases to 2182N.
Yes, the SAI63X900-S is dimensionally interchangeable per ISO 15552. It serves as a drop-in replacement for other ISO 15552 profile cylinders of the same bore and stroke, using a G3/8 port and M16x1.5 rod thread.
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