Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX220-50
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX220-50 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 SAIJ63AX220-50
The AirTAC SAIJ63X220-50 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 1559 Newtons of pull force at 0.5 MPa. It features a SUS420J2 stainless steel piston rod and PT tapered port threads. The integrated rear adjusting screw provides a usable travel window of 170 to 220 mm, enabling precise end-position tuning without external stops.
By dialing in the stroke during commissioning, you adapt the machine to new product sizes on the fly instead of swapping the entire cylinder. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of position switches. Note that the adjuster acts purely as a mechanical stop to set the travel end, not a lock, so it cannot hold a load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX220-50 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX220-50 |
|---|---|
| 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 SAIJ63AX220-50
| 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 SAIJ63AX220-50 Is Used
Machine Setup Tuning
Dial in the exact 170-220 mm end-position during commissioning to perfect product handling without adding external mechanical stops.
Product Changeover
Quickly adapt the travel distance on a packaging line when switching to a different box size, minimizing downtime.
Variable End-Stop Positioning
Use the built-in rear screw to fine-tune the retract stroke for delicate assembly operations requiring precise reach.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX220-50 the Right Cylinder?
Choose this 63 mm bore when a 50 mm stroke requires a 1559 N pull force at 0.5 MPa, stepping down from the 80 mm bore (2268 N pull) to avoid oversized energy use, or up from the 50 mm bore (825 N pull) when heavier actuation is needed. An adjustable-stroke cylinder is preferred over a fixed SAI when you need variable end-stops for product changeovers or fine-tuning during machine setup.
When replacing an ISO 15552 cylinder, match the 63 mm bore, 220 mm nominal stroke, 50 mm adjustment, PT tapered ports, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Since this unit lacks a magnet, it cannot host reed or solid-state sensors; for load-holding without live air, consider an external rod lock or the SAIL/BSAI series.
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 SAIJ63AX220-50 FAQ
At 0.5 MPa operating pressure, the 63 mm bore generates 1559 Newtons of pull force and 2182 Newtons of push force at 0.7 MPa.
The rear adjuster screw lets you trim the 220 mm nominal stroke back by up to 50 mm, providing an effective travel window between 170 and 220 mm. It acts as a travel stop, not a load lock.
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