Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-20
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 290mm 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
- Stroke290 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-20
The AirTAC SAIJ63X290-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window down to 270-290 mm without swapping the unit. Built with a SUS420J2 stainless steel rod and PT tapered ports, it delivers 2182 N of push force at 0.7 MPa. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches.
This adjustable-stroke model uses a rear mechanical stopper to set the end position, meaning the adjuster and the variable air cushions control travel deceleration but do not function as a lock. For load-holding without live air pressure, consider the related SAIL or BSAI series. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-20 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 290 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 SAIJ63AX290-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×290 | 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 SAIJ63AX290-20 Is Used
End-Position Tuning
Dial in the exact retract distance within the 270-290 mm window during machine commissioning to perfect product handling without adding external stopper blocks.
Product Changeover
Quickly adjust the stroke end-stop on automated lines when switching between product sizes, saving downtime on mechanical retooling.
Assembly Machine Setup
Fine-tune the travel distance on automated assembly presses to accommodate varying component heights and ensure consistent clamping force.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-20 the Right Cylinder?
Choose this 63 mm bore when you need more thrust than the 50 mm version (1374 N push at 0.7 MPa) but want to avoid the larger footprint of the 80 mm option. An adjustable stroke is ideal for machine setup and product changeover, letting you dial in the exact end-stop during commissioning rather than machining external stops. When replacing an ISO 15552 cylinder, match the 63 mm bore, 290 mm stroke, 20 mm adjustment, PT ports, and your required mounting accessory.
Because the 290 mm stroke is relatively long, the 20 mm piston rod is subject to increased side-loading leverage; an external guide rail is recommended to prevent binding. Remember that a plain SAIJ cylinder will not hold its load statically without live air pressure.
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 SAIJ63AX290-20 FAQ
The SAIJ63X290-20 delivers a push force of 2182 N and a pull force of 1402 N at 0.7 MPa operating pressure, with a maximum thrust of 318 kgf at 1.0 MPa.
The rear adjuster acts as a mechanical stopper, allowing you to shorten the nominal 290 mm stroke by up to 20 mm, creating an effective travel window of 270-290 mm for fine-tuning end positions.
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