Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-20S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 165mm 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
- Stroke165 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-20S
The AirTAC SAIJ63X165-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 145-165 mm usable travel window by allowing you to trim up to 20 mm from the 165 mm nominal stroke during commissioning. In the 63 mm bore class, it delivers 1559 N of pull force and 2182 N of push force at 0.7 MPa. This variant includes a magnet for position sensing and features an SUS420J2 stainless steel piston rod for enhanced corrosion resistance.
The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE reed or DMSE electronic switches. It uses a G3/8 port and offers variable air cushions at both ends to manage deceleration. The rear adjuster acts purely as a mechanical stop to fine-tune the end position without needing external stops, but it does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-20S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 165 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 SAIJ63AX165-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×165 | 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 SAIJ63AX165-20S Is Used
Machine Changeover
Dial in the 145-165 mm travel window during product size transitions without swapping out the entire cylinder or adding external mechanical stops.
End-Position Tuning
Fine-tune the retract stroke by up to 20 mm at commissioning to achieve exact positioning accuracy for varying workpiece lengths.
Variable End Stops
Utilize the rear adjuster screw to set precise retraction limits on automated assembly lines where multiple end-stop distances are required.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-20S the Right Cylinder?
Choose this 63 mm bore adjustable-stroke cylinder when your assembly requires precise end-position tuning during setup or product changeover, stepping up from a 50 mm bore that provides 1374 N of push force. The 20 mm adjustment range is ideal for dialing in exact clamping or positioning distances on the fly. The SUS420J2 rod and M16x1.5 rod thread handle moderate side loads well, though any stroke exceeding 300 mm would require an external guide.
This SAIJ model supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options. It is dimensionally interchangeable per ISO 15552. For applications requiring the load to be held without continuous air pressure, consider the SAIL or BSAI series, as the SAIJ rear adjuster functions only as a travel stop and not a 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 SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-20S FAQ
The rear adjusting screw allows you to shorten the effective stroke by up to 20 mm from the 165 mm nominal length, providing a usable travel window of 145-165 mm. The adjuster acts as a mechanical stop and does not lock the load without live air pressure.
At 0.5 MPa, it provides 1559 N of pull force and 1559 N of push force. At 0.7 MPa, the push force increases to 2182 N, with a maximum push force of 2805 N at 0.9 MPa.
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