Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-20S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 800mm 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
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-20S
The AirTAC SAIJ63X800-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 780 to 800 mm. It features a carbon steel piston rod and a -S magnet for position sensing. Delivering 1559 N of push force at 0.5 MPa, it uses a G3/8 port and PT tapered threads for secure pneumatic connections.
This model supports speeds of 30-800 mm/s and includes variable air cushions at both ends to manage kinetic energy. The rear adjuster acts as a mechanical stop for fine-tuning end positions during commissioning. For position feedback, the integrated magnet works seamlessly with AirTAC CMSE reed and DMSE solid-state sensors fitted into the dual-side barrel grooves.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-20S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 800 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 SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×800 | 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 SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-20S Is Used
Long-Stroke Transfer Conveyors
Fine-tune the 780-800 mm travel end to perfectly align product pushers on a transfer line without repositioning hard mechanical stops.
Machine Changeover Setup
Use the 20 mm rear adjustment screw to quickly adapt the retract end position when switching between product sizes on automated packaging machinery.
Material Push-Off Stations
Leverage the 1559 N push force at 0.5 MPa to eject parts, while the DMSE solid-state sensors confirm full retraction for the PLC.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-20S the Right Cylinder?
Choose this 63 mm bore when an application requires 1559 N of thrust at 0.5 MPa, stepping up from a 50 mm bore that provides 982 N. The 20 mm rear adjuster is ideal for dialing in exact end-of-stroke positions during machine setup or product changeover without swapping out the entire cylinder. Mounting options include the reduced SAIJ set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Because this cylinder features an 800 mm stroke, the 20 mm diameter rod is subjected to significant side-loading leverage; an external guide rail is highly recommended to prevent premature seal wear. Remember that the rear adjuster and air cushions only decelerate the travel end—they do not hold the load without live air. For true load-holding without pressure, consider an AirTAC SAIL or BSAI cylinder. To replace an existing unit, match the 63 mm bore, 800 mm stroke, 20 mm adjustment, G3/8 PT ports, and the -S magnet.
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 SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-20S FAQ
At a 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. It can deliver up to 318 kgf at its maximum 1.0 MPa pressure rating.
The rear adjuster screw acts as a mechanical stop that allows you to shorten the effective stroke by up to 20 mm, creating a 780 to 800 mm usable travel window. It is used for fine-tuning end positions at commissioning and is not a lock—it cannot hold a load without continuous air pressure.
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