Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-50S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 165mm 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
- Stroke165 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-50S
The AirTAC SAIJ63X165-50-S is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, letting you dial the effective travel back by up to 50 mm. This yields a usable 115-165 mm end-position window for fine-tuning machinery at commissioning without adding external stops. The 63 mm bore delivers 1559 N pull force at 0.5 MPa, making it suitable for moderate-load handling.
This variant features a SUS420J2 stainless steel piston rod (code A) for improved corrosion resistance over standard carbon steel. It includes a magnet (-S) for position sensing and uses PT tapered ports. The extruded aluminum barrel integrates sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE solid-state switches.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-50S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 165 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 SAIJ63AX165-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×165 | 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 SAIJ63AX165-50S Is Used
Machine Changeover
Dial in the 115-165 mm stroke window during product size changes without swapping cylinders or adding shims.
End-Stop Tuning
Fine-tune the retract end position at commissioning using the rear adjuster to hit exact mechanical targets.
Diversion Gates
Set variable retract stops for lane diverters, allowing quick adjustments for different package sizes on the line.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-50S the Right Cylinder?
Choose this 63 mm bore when a 50 mm (code A) stainless rod and 1559 N pull force at 0.5 MPa fit your load, but you need on-the-fly end-position tuning. If your application requires less force, the 50 mm bore provides 825 N pull at 0.5 MPa. If you need heavier thrust, the 80 mm bore offers 2268 N pull at 0.5 MPa.
An adjustable stroke is ideal for product changeovers where a fixed SAI cylinder would require physical shimming. The rear adjuster acts as a travel stop, not a lock; it cannot hold the load without live air. For true load-holding without pressure, use an SAIL air-released lock, a BSAI clamp-lock, or an external rod lock. To replace an existing ISO 15552 cylinder, match the 63 mm bore, 165 mm stroke, 50 mm adjuster, PT port, and -S magnet. Mounting options are 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 SAIJ63AX165-50S FAQ
At 0.5 MPa it provides 1559 N pull force and 2182 N push force. At 0.7 MPa the push force is 2182 N.
The rear adjuster lets you shorten the 165 mm nominal stroke by up to 50 mm, creating a 115-165 mm usable travel window. It acts as a travel stop and does not lock the load without live air.
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