Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX220-20
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX220-20 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 SAIJ63AX220-20
The AirTAC SAIJ63X220-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 200-220 mm usable travel window, allowing you to dial back the nominal 220 mm stroke by up to 20 mm during machine commissioning. Delivering 2182 N of push force at 0.7 MPa, it fits mid-range actuation needs perfectly.
This model uses a SUS420J2 stainless steel piston rod (option A) for improved corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides, ready for position sensing if needed later, while the PT tapered port threads ensure a tight, reliable pneumatic connection at the G3/8 ports.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX220-20 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX220-20 |
|---|---|
| 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 SAIJ63AX220-20
| 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 SAIJ63AX220-20 Is Used
Changeover Calibration
Dial in the exact 200-220 mm end-stop position during product size changeovers without adding external physical stops.
Package Diverter
Adjusts the push-off stroke on the fly to accommodate varying package lengths on a single sorting line.
Press Positioning
Fine-tunes the retract position of a sub-assembly press to ensure precise contact before applying the 1559 N force.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX220-20 the Right Cylinder?
Choose this 63 mm bore when a 50 mm bore (offering 1374 N push at 0.7 MPa) is too weak, but an 80 mm bore (3518 N) would be excessive. The adjustable stroke is ideal for product changeovers on a line where the exact end-of-travel position varies slightly, saving you from swapping out a fixed-stroke SAI cylinder. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure; for true load-holding, select an SAIL or BSAI cylinder.
Because the 220 mm stroke exceeds 200 mm, pay attention to side-load risks. The 20 mm diameter rod and M16x1.5 thread provide robust support, but long unsupported strokes still require an external guide to prevent rod binding. This model is dimensionally interchangeable per ISO 15552 and uses the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ63AX220-20 FAQ
The rear adjuster screw lets you shorten the effective travel by up to 20 mm, creating a 200-220 mm usable window. It acts as a mechanical stop to fine-tune the end position at commissioning, but it is not a lock and will not hold the load without live air pressure.
At a 0.7 MPa operating pressure, the SAIJ63X220-20 delivers 2182 N of push force and 1402 N of pull force. It can deliver up to 2805 N push at 0.9 MPa.
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Covers non-human-caused product damage.
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