Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-100S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 225mm 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
- Stroke225 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-100S
The AirTAC SAIJ63X225-100-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a generous usable travel window of 125 to 225 mm, allowing you to dial back the nominal stroke by up to 100 mm. This bore size delivers 1559 N of push thrust and 1402 N of pull thrust at 0.5 MPa, making it well-suited for medium-force handling tasks.
This specific SKU is built with a SUS420J2 stainless steel rod for enhanced corrosion resistance and includes a magnet for position sensing. The extruded aluminum barrel integrates sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic switches. The rear adjuster acts purely as a travel stop for end-position tuning and does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-100S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 225 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 SAIJ63AX225-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×225 | 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 SAIJ63AX225-100S Is Used
Variable End-Position Tuning
Dial in the exact retract distance during machine commissioning to accommodate sensor targets or varying mechanical clearances without adding external stopper blocks.
Product-Size Changeovers
Quickly adjust the travel window from 225 mm down to 125 mm on packaging lines when switching between different carton or product sizes on the fly.
Medium-Force Handling
Leverage the 1559 N push force at 0.5 MPa for pushing, lifting, or gating heavier workpieces while relying on the stainless rod for mildly corrosive environments.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-100S the Right Cylinder?
Choose this adjustable model when your machine setup requires variable end-stops or frequent product-size changeovers without physically swapping cylinders. The rear screw allows you to trim the stroke precisely at commissioning, a major advantage over a fixed-stroke SAI cylinder. Because the plain SAIJ adjuster is a stop and not a lock, load-holding without live air requires a SAIL or BSAI cylinder. For ISO 15552 replacement matching, specify bore 63, 225 mm stroke, 100 mm adjustment, PT port threads, and the -S magnet option.
The 20 mm piston rod and M16x1.5 thread provide robust resistance to side loading, but with a 225 mm stroke, you should still use an external guide rail for heavy or off-center loads. If your application requires higher clamping force, stepping up to the 80 mm bore yields 2513 N of push force at 0.5 MPa.
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 SAIJ63AX225-100S FAQ
At 0.5 MPa it provides 1559 N of push force and 1402 N of pull force. If you increase the operating pressure to 0.7 MPa, the push force rises to 2182 N.
The rear adjuster screw lets you shorten the effective stroke by up to 100 mm, creating a usable travel window of 125 to 225 mm. It functions as a mechanical stop for end-position tuning and does not lock or hold the load pneumatically.
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