Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-50S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 195mm 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
- Stroke195 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-50S
The AirTAC SAIJ63X195-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 145 to 195 mm usable travel window, allowing you to dial back the nominal 195 mm stroke by up to 50 mm during commissioning. In the 63 mm bore class, it generates 1559 N of push force and 1402 N of pull force at 0.5 MPa, operating efficiently between 30-800 mm/s.
This configuration features a SUS420J2 stainless steel rod for improved corrosion resistance and includes a built-in magnet (-S) for position sensing. The extruded aluminum barrel offers sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic switches. It uses a G3/8 PT port and a 36 mm cushion length to manage end-of-stroke impacts.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-50S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 195 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 SAIJ63AX195-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×195 | 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 SAIJ63AX195-50S Is Used
Changeover Calibration
Fine-tune the 145-195 mm travel window on the fly during product size changeovers, eliminating the need to mechanically swap actuators or bolt on external stops.
Variable End-Stop Positioning
Ideal for indexing conveyors where the retracted end position must be precisely trimmed by up to 50 mm to accommodate varying package lengths.
Assembly Press Setup
Dial in the exact retraction point during machine commissioning to prevent over-travel and ensure delicate components are pressed accurately every cycle.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-50S the Right Cylinder?
Choose this 63 mm bore adjustable-stroke cylinder when your machine setup requires variable end-stops or frequent product changeovers without physically swapping out the actuator. The rear adjuster screw acts purely as a mechanical stop; it does not hold the load without live air pressure. If your application demands true load-holding in the event of air loss, consider the SAIL (air-released lock) or BSAI (clamp-lock) series instead.
For a direct ISO 15552 replacement, match the 63 mm bore, 195 mm stroke, 50 mm adjustment range, G3/8 PT ports, and the -S magnet. The 63 mm bore delivers 1559 N push at 0.5 MPa, sitting comfortably between the 982 N of a 50 mm bore and the 2513 N of an 80 mm bore. Because the 195 mm stroke approaches the 300 mm side-load threshold, ensure you use an external guide to prevent rod binding. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
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 SAIJ63AX195-50S FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 50 mm, creating a usable travel window of 145 to 195 mm. It functions as a mechanical stop to set the retract end-position and works alongside the air cushion for deceleration, but it does not lock or hold the load without continuous air pressure.
At 0.5 MPa, the SAIJ63X195-50-S provides 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
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