Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX220-40
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX220-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 220mm 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
- Stroke220 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX220-40
The AirTAC SAIJ63X220-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end position at commissioning. With a nominal 220 mm stroke and a 40 mm adjustment screw, it provides a usable travel window of 180-220 mm, letting you dial in the exact retract distance without swapping the barrel or adding external stops. Driven by a 20 mm carbon steel rod, it delivers 1559 N of push force and 1402 N of pull force at 0.5 MPa, making it well-suited for medium-force positioning tasks.
This variant features a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and uses PT tapered port threads (G3/8) for a robust mechanical seal. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU is configured without a magnet, meaning position sensing via CMSE reed or DMSE electronic switches is not supported without adding the -S option. The rear adjuster acts purely as a travel stop to set deceleration and end-position, so it does not hold the load without live air pressure; for true load-holding, consider the SAIL or BSAI series.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX220-40 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX220-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 220 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 SAIJ63AX220-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×220 | 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 SAIJ63AX220-40 Is Used
Variable End-Stop Setup
Dial in the exact retract position within the 180-220 mm window during machine commissioning without machining new external stopper blocks.
Product Changeover
Quickly adjust the stroke length by up to 40 mm to accommodate varying package sizes on a packaging line, reducing downtime between runs.
Medium-Force Positioning
Leverage the 1559 N push force at 0.5 MPa to push parts into a fixture while using the rear screw to fine-tune the final resting position.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX220-40 the Right Cylinder?
Choose this 63 mm bore when 50 mm bore cylinders (providing 982 N push at 0.5 MPa) lack the necessary thrust, but an 80 mm bore (2513 N push) would be excessive. The 40 mm adjustment range is ideal for machine setups requiring variable end-stops during product changeovers, replacing the need for fixed-stroke SAI cylinders when exact end positions fluctuate. Because the nominal stroke is 220 mm, the 20 mm rod and M16x1.5 thread provide decent side-load resistance, but an external guide is recommended if the load is heavy or unsupported. When replacing an ISO 15552 cylinder, match the 63 mm bore, 220 mm stroke, 40 mm adjuster, PT G3/8 port, SUS420J2 rod, and no-magnet configuration. Remember that the rear stopper and air cushions do not function as a lock or brake.
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 SAIJ63AX220-40 FAQ
At a 0.5 MPa operating pressure, the 63 mm bore generates 1559 N of push force and 1402 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 318 kgf.
The rear adjuster screw allows you to shorten the effective travel from the 220 mm nominal stroke down to as little as 180 mm. It acts as a mechanical stop to fine-tune the end position, but it does not lock the load without live air pressure.
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