Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X95-50S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X95-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 95mm 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
- Stroke95 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X95-50S
The AirTAC SAIJ63X95-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 1559N of push force at 0.5 MPa. It features a carbon steel piston rod and a built-in magnet (-S) for position sensing. By turning the rear stopper screw, you unlock a usable travel window of 45-95mm, allowing precise end-position tuning without swapping hardware.
This 63mm bore actuator uses a G3/8 port and M16x1.5 rod thread to handle robust loads, while its extruded aluminum barrel provides sensor grooves on both sides. The -S magnet integrates seamlessly with AirTAC CMSE reed and DMSE electronic switches. Remember that the rear adjuster acts only as a travel stop to fine-tune deceleration, not as a lock to hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X95-50S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X95-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 95 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 SAIJ63X95-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×95 | 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 SAIJ63X95-50S Is Used
Product Changeovers
Dial in the 45-95mm travel window on the fly to accommodate different package sizes on the same conveyor line without changing cylinders.
Machine Setup
Fine-tune the retraction end-stop during initial commissioning to perfectly time the 1559N clamping force against varying workpiece tolerances.
Variable End Stops
Use the rear screw to set precise deceleration points for repetitive assembly tasks, ensuring consistent positioning without external mechanical stops.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X95-50S the Right Cylinder?
Choose this adjustable-stroke model when your machine requires frequent product changeovers or exact end-position tuning at commissioning, avoiding the need to bolt on external stops. If you need less force, stepping down to a 50mm bore yields 982N at 0.5 MPa; stepping up to an 80mm bore provides 2513N. To replace an ISO 15552 cylinder, match the 63mm bore, 95mm nominal stroke, 50mm adjustment range, PT tapered port thread, and the -S magnet requirement.
Because the nominal stroke is under 300mm, side-load risks are moderate, but the M16x1.5 rod still requires alignment to prevent premature seal wear. For applications needing true load-holding without continuous air pressure, select a SAIL pneumatic lock or BSAI clamp-lock cylinder instead of relying on the adjuster.
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 SAIJ63X95-50S FAQ
The rear stopper screw allows you to mechanically shorten the effective stroke by up to 50mm. This creates a usable travel window of 45-95mm, letting you set the exact retraction end-position without replacing the cylinder.
At 0.5 MPa operating pressure, it provides 1559N of push force and 1402N of pull force. It can reach up to 2805N push force at its maximum 0.9 MPa pressure rating.
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