Airtac SAI63 Standard Cylinder SAI63BX850
The AirTAC Airtac SAI63 Standard Cylinder SAI63BX850 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ63 mm
- Stroke850 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAI63 Standard Cylinder SAI63BX850
The AirTAC SAI63X850 is a double-acting ISO 15552 profile cylinder engineered for demanding linear motion tasks. Delivering a robust 1559 N of push force at 0.5 MPa, this 63 mm bore actuator utilizes an 850 mm stroke to power equipment requiring substantial travel distances. The extruded aluminum barrel design omits tie-rods, providing a clean exterior that simplifies mounting and sensor placement.
This specific configuration incorporates a SUS304 stainless steel rod (material code B) for superior corrosion resistance in humid or chemically active settings. It features PT tapered port threading and operates without a magnet. If your workflow demands end-position confirmation, you would need to specify the -S magnet option to utilize CMSE or DMSE switches in the dual sensor grooves.
Airtac SAI63 Standard Cylinder SAI63BX850 Technical Specifications
| Model | Airtac SAI63 Standard Cylinder SAI63BX850 |
|---|---|
| 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 SAI63BX850
| 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 SAI63BX850 Is Used
Material Transfer
Pushes heavy pallets along an extended 850 mm conveyor section using 1559 N of thrust at 0.5 MPa.
Vertical Lift Gate
Actuates a tall security or access gate where the SUS304 rod provides necessary moisture resistance.
Long-Stroke Ejection
Ejects molded parts from deep machinery cavities, utilizing the full 850 mm travel distance.
Is the Airtac SAI63 Standard Cylinder SAI63BX850 the Right Cylinder?
Selecting this 850 mm stroke actuator means prioritizing extended reach within the 63 mm bore class, which offers 1559 N at 0.5 MPa. If your application requires less push force and a smaller footprint, the 50 mm bore provides 982 N. Conversely, moving up to the 80 mm bore yields 2513 N for heavier loads. Because this cylinder lacks a magnet, external limit switches are required for position feedback.
At 850 mm, the unsupported rod length is highly susceptible to bending under side loads. To prevent premature rod-bearing wear, implement an external linear guide or use a guided cylinder to absorb lateral forces. Furthermore, the standard adjustable air cushions only decelerate the piston near stroke ends; they will not hold a load if air pressure drops. For dead-load holding, integrate an external pilot-operated check valve or specify the SAIL lock variant.
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 SAI63BX850 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 SAI63X850 is dimensionally interchangeable per ISO 15552. You can drop it into existing foot, flange, or trunnion mounts designed for standard ISO 15552 cylinders, provided the 850 mm stroke and G3/8 port match your setup.
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