Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX20-10
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX20-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 20mm 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
- Stroke20 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX20-10
The AirTAC SAIJ63X20-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a 1559N pull force at 0.5MPa. With a 20mm nominal stroke and a 10mm adjustment range, it provides a highly precise 10 to 20mm usable travel window for exact end-position tuning. This feature eliminates the need to swap cylinders or add external stops during machine commissioning.
This variant features a SUS420J2 stainless steel rod and PT tapered port threads. It utilizes a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE or DMSE switches if a magnet is added later.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX20-10 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX20-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 20 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 SAIJ63AX20-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×20 | 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 SAIJ63AX20-10 Is Used
Precision Clamping
Dial in the exact 10-20mm clamping travel during machine setup to accommodate varying material thicknesses without external stoppers.
Product Changeover
Quickly adjust the rear stopper on the assembly line to fine-tune end positions when switching between different product sizes.
Short-Stroke Ejection
Utilize the 1559N pull force for compact ejection tasks, tuning the retract distance precisely to clear the machine envelope.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX20-10 the Right Cylinder?
Choose this 63mm bore when an application requires 1559N pull force at 0.5MPa with a very short, fine-tuned travel window. If your force requirements are lower, stepping down to a 50mm bore provides 825N pull force, while moving up to an 80mm bore yields 2268N. The adjustable rear stopper is ideal for product changeovers, but note that the adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding, consider the SAIL or BSAI series.
When replacing an ISO 15552 cylinder, match the 63mm bore, 20mm stroke, 10mm adjustment, G3/8 PT port, and the specific mounting accessory. Because the stroke is under 300mm, side-loading is less critical, but the 20mm rod diameter and M16x1.5 thread still handle external forces better than smaller variants.
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 SAIJ63AX20-10 FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 10mm. For this 20mm stroke model, it creates a 10 to 20mm adjustable travel window, letting you fine-tune the retract end position at commissioning without swapping the cylinder.
At 0.5MPa operating pressure, the 63mm bore generates 1559N of pull force and 1402N of pull force. At 0.7MPa, it provides 2182N of push force.
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