Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-30
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-30 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 SAIJ63AX225-30
The AirTAC SAIJ63X225-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 195 to 225 mm, allowing you to trim the effective stroke by up to 30 mm during commissioning without swapping hardware. Built with a 63 mm bore, it delivers 1559 N of pull force at 0.5 MPa and 2182 N of push force at 0.7 MPa.
This variant uses a SUS420J2 stainless steel rod (code A) for improved corrosion resistance and features PT tapered port threads with a G3/8 connection. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU is configured without a magnet for position sensing. The rear stopper sets the retract end position, but remember it acts only as a travel stop, not a load-holding lock.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-30 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-30 |
|---|---|
| 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 SAIJ63AX225-30
| 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 SAIJ63AX225-30 Is Used
Machine Changeover
Dial in the 195-225 mm stroke window during product size changes to set new retract positions rapidly without changing the cylinder.
End-Stop Calibration
Fine-tune the final end position at commissioning using the 30 mm rear adjuster, eliminating the need to bolt on external mechanical stops.
Assembly Line Timing
Adjust the retract distance on the fly to sync operations with varying part dimensions while maintaining 1559 N of pulling force.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-30 the Right Cylinder?
Select this 63 mm bore cylinder when an application requires precise end-position tuning within a 195-225 mm window, avoiding the need for external stops or a fixed-stroke SAI cylinder. If your setup needs less force, stepping down to a 50 mm bore yields 825 N of pull force at 0.5 MPa; stepping up to an 80 mm bore provides 2268 N. For exact ISO 15552 replacement matching, verify the 225 mm stroke, 30 mm adjustment, PT G3/8 port, and mounting style (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Since the stroke is over 200 mm, ensure external guidance is used to prevent excessive side-loading on the rod.
Because the rear adjuster only restricts travel and the air cushions decelerate the piston, this cylinder cannot hold a load without live air pressure. If your machine requires true load-holding in the event of air loss, consider the SAIL pneumatic lock or BSAI clamp-lock cylinder instead.
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 SAIJ63AX225-30 FAQ
At 0.5 MPa, this 63 mm bore cylinder provides 1559 N of pull force and 1559 N of push force. At 0.7 MPa, the push force increases to 2182 N.
The rear adjuster allows you to shorten the 225 mm nominal stroke by up to 30 mm, creating a usable travel window of 195 to 225 mm. The adjuster acts as a mechanical stop and does not lock the load without air pressure.
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