Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X95-20S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X95-20S 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 SAIJ63X95-20S
The AirTAC SAIJ63X95-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 75 to 95 mm. Delivering 1559 N of push force and 1402 N of pull force at 0.5 MPa, it is designed for applications requiring exact end-position tuning during commissioning without the need to swap out the entire actuator. The extruded aluminum barrel features sensor grooves on both sides, and this -S variant includes a magnet for position feedback.
The rear adjustment screw acts purely as a mechanical stop to trim the retract stroke by up to 20 mm; it does not lock or hold the load without live air pressure. This model features a carbon steel piston rod and PT tapered port threads. It supports a reduced set of ISO 15552 mounting interfaces, including Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting the FB, CA, CB, and CR styles.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X95-20S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X95-20S |
|---|---|
| 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 SAIJ63X95-20S
| 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 SAIJ63X95-20S Is Used
Product Changeover Tuning
Quickly dial in the 75-95 mm stroke window during packaging line format changes without replacing the cylinder or adding external spacers.
Machine Setup Commissioning
Use the rear stopper to fine-tune the exact retract end position during initial machine build, compensating for mechanical tolerance stack-up.
Variable End-Stop Clamping
Adjust the clamping depth on the fly for parts of slightly varying heights, using the 1559 N thrust to secure components reliably.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X95-20S the Right Cylinder?
Choose this 63 mm bore when 50 mm (982 N push @0.5 MPa) is too weak and 80 mm (2513 N push @0.5 MPa) is oversized. The 20 mm adjustable window is ideal for product changeovers, letting you fine-tune the retract end-stop rather than machining external stops or buying a fixed-stroke SAI cylinder. For exact drop-in replacement, match the 95 mm stroke, 20 mm adjuster, PT port thread, and the -S magnet requirement. The 20 mm rod thread (M16x1.5) handles moderate side loads, but if your setup subjects the rod to heavy lateral forces, an external guide is still recommended.
Because the SAIJ63X95-20-S relies on a mechanical stop and variable air cushions for end-position deceleration, it will not hold its position if air pressure drops. If your application requires dead-load holding without live air, consider the SAIL (air-released lock) or BSAI (clamp-lock) series instead. The -S magnet works seamlessly with AirTAC CMSE reed and DMSE solid-state sensors.
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 SAIJ63X95-20S FAQ
It features a rear adjusting screw that lets you mechanically shorten the retract stroke by up to 20 mm, providing an effective travel window of 75 to 95 mm. The adjuster acts as a hard stop and does not function as a lock to hold the load without air pressure.
At 0.5 MPa operating pressure, it provides 1559 N of push force and 1402 N of pull force. At the maximum rated pressure of 1.0 MPa, it can deliver up to 318 kgf of push force.
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