Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-20S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 115mm 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
- Stroke115 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-20S
The AirTAC SAIJ63X115-20-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 1559N push force at 0.5 MPa and utilizes a 20mm adjustment range, creating a usable travel window of 95-115mm for precise end-position tuning. Equipped with a -S magnet, it supports AirTAC CMSE reed and DMSE electronic sensors for automated position feedback.
This unit features a SUS420J2 stainless steel rod for improved corrosion resistance and uses PT tapered port threads (G3/8). The rear adjustment screw acts purely as a mechanical stop to trim the retract stroke without swapping the cylinder. It is not a locking device, so live air pressure is required to hold the load, with SAIL or BSAI cylinders recommended for true load-holding applications.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-20S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 115 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 SAIJ63AX115-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×115 | 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 SAIJ63AX115-20S Is Used
Machine Changeover
Dial in the exact retract distance within the 95-115mm window during product size changes without physically swapping the cylinder or adding external stops.
End-Position Tuning
Compensate for mechanical wear or slight mounting misalignments at commissioning by trimming the stroke back up to 20mm via the rear adjuster.
Automated Positioning
Leverage the integrated -S magnet with DMSE solid-state sensors to confirm the adjusted end-of-stroke position in automated assembly lines.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-20S the Right Cylinder?
Select this 63mm bore when an application requires moderate thrust (1559N push at 0.5 MPa) alongside variable end-stops, stepping up from a 50mm bore that yields 982N. The 20mm adjuster is chosen over a fixed-stroke SAI cylinder when you need to fine-tune the retract position during machine commissioning or product changeovers. To match this ISO 15552 replacement, specify: 63mm bore, 115mm stroke, 20mm adjustment, PT G3/8 port, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and the -S magnet. For any stroke of 300mm or more, add an external guide to support side 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 SAIJ63AX115-20S FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the nominal 115mm stroke by up to 20mm, providing an adjustable travel window of 95-115mm. It only sets the travel end and does not lock or hold the load without live air pressure.
At an operating pressure of 0.5 MPa, the SAIJ63X115-20-S provides a push force of 1559N and a pull force of 1402N. It operates at speeds between 30-800mm/s.
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