Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-50
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-50 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 SAIJ63AX195-50
The AirTAC SAIJ63X195-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 145 to 195 mm. Delivering a push force of 1559 N and a pull force of 1402 N at 0.5 MPa, it handles robust actuation tasks. This configuration features a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and utilizes PT tapered G3/8 porting.
By turning the external rear screw, technicians can fine-tune the retract end position during commissioning without swapping out the cylinder or adding external stops. The adjuster functions purely as a mechanical travel stop to set the end position and relies on the integrated air cushions for deceleration; it does not hold the load without live air pressure. For operations requiring true fail-safe load holding, consider the SAIL or BSAI series instead.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-50 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-50 |
|---|---|
| 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 SAIJ63AX195-50
| 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 SAIJ63AX195-50 Is Used
Product Changeover
Dial the rear adjuster to shift the retract position by up to 50 mm when switching the line to a different product size, avoiding the need to physically swap cylinders.
Commissioning Fine-Tuning
Precisely set the end-of-stroke position during machine setup to absorb mechanical tolerance variations without installing external stopper blocks.
Assembly Pressing
Apply up to 1559 N of thrust at 0.5 MPa for pressing and clamping components, using the adjustable stop to vary the press depth as needed.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-50 the Right Cylinder?
Choose this 63 mm bore when a 50 mm bore (offering 982 N push at 0.5 MPa) lacks sufficient thrust, but stepping up to an 80 mm bore (2513 N push) would be overkill. The 50 mm adjustment range is ideal for machinery requiring frequent product-size changeovers, allowing operators to dial in new end positions rapidly. When replacing an ISO 15552 cylinder, match the 195 mm stroke, 50 mm adjuster, PT G3/8 port, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Since the 195 mm stroke is below 300 mm, side-load risks are moderate, but the 20 mm rod diameter still benefits from external guidance on heavy lateral loads.
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 SAIJ63AX195-50 FAQ
At a 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. At 0.9 MPa, the push force increases to 2805 N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from 195 mm down to a minimum of 145 mm. It sets the travel end and relies on the air cushion for deceleration, but it does not lock or hold the load without continuous air pressure.
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