Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-20S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-20S 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 SAIJ63AX195-20S
The AirTAC SAIJ63X195-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a PT tapered G3/8 port and a 20mm stainless steel rod made of SUS420J2. By turning the rear adjustment screw, you can fine-tune the effective travel window down from the 195mm nominal stroke, providing a usable range of 175-195mm without needing external stops.
Delivering 1559 Newtons of pull force at 0.5 MPa and up to 2805 Newtons at 0.9 MPa, this bore size handles robust actuation tasks. The extruded aluminum barrel includes sensor grooves on both sides, and because this variant includes a magnet (-S), it directly supports AirTAC CMSE reed and DMSE electronic solid-state switches for precise end-of-stroke detection.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-20S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-20S |
|---|---|
| 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 SAIJ63AX195-20S
| 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 SAIJ63AX195-20S Is Used
Changeover Calibration
Dial in the exact retract distance within the 175-195mm window during product size changeovers on a packaging line without replacing the actuator.
End-Stop Trimming
Fine-tune the final end-of-stroke position against a hard mechanical stop during machine setup to prevent crushing delicate workpieces.
Assembly Pressing
Leverage the 2805 Newtons of push force at 0.9 MPa for pressing bearings, using the rear screw to precisely limit the insertion depth.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-20S the Right Cylinder?
Choose this adjustable-stroke model when your assembly requires exact end-position tuning at commissioning or during product changeover, avoiding the need to physically swap cylinders or bolt on external stoppers. If your application requires less force, stepping down to a 50mm bore yields 825 Newtons of pull at 0.5 MPa; if you need significantly more thrust, an 80mm bore provides 2268 Newtons. To match this ISO 15552 footprint for replacement, verify the 63mm bore, 195mm stroke, 20mm adjustment, PT G3/8 port, and the -S magnet requirement.
Note that the rear adjuster functions strictly as a travel stop and the variable air cushions only manage deceleration; neither component will hold a load safely without continuous live air pressure. For true fail-safe load holding, consider the AirTAC SAIL pneumatic lock or BSAI clamp-lock cylinder instead. Since this is a standard 195mm stroke, side-load concerns are minimal, though any long unsupported loads should still use an external guide. SAIJ supports a reduced mounting set including 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 SAIJ63AX195-20S FAQ
The rear adjuster screw lets you shorten the nominal 195mm stroke by up to 20mm, creating a usable travel window of 175-195mm. This allows you to set the exact retract end-position during installation without adding external stops.
At 0.5 MPa operating pressure, it generates 1559 Newtons of push force and 1402 Newtons of pull force. At 0.9 MPa, the push force increases to 2805 Newtons.
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