Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX20-20S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX20-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 20mm 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
- Stroke20 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX20-20S
The AirTAC SAIJ63X20-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 1559N of push force at 0.5 MPa. Because the nominal 20mm stroke is paired with a 20mm adjustment code, the usable travel window spans from 0 to 20mm. This allows you to dial in the exact end position during commissioning without swapping hardware.
This configuration features an SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors. It uses a PT tapered G3/8 port and relies on a variable air cushion at both ends to decelerate the load.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX20-20S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX20-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 20 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 SAIJ63AX20-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×20 | 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 SAIJ63AX20-20S Is Used
Precision Clamping
Dial in the exact clamping depth on delicate parts by adjusting the rear stopper from 0 to 20mm without reprogramming the machine.
Short-Stroke Setup
Ideal for compact assemblies where the 20mm total travel must be fine-tuned to a specific sub-20mm dimension during initial commissioning.
Changeover Stops
Quickly adapt end-of-stroke positions on a production line when switching to a new product variant by turning the rear adjuster.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX20-20S the Right Cylinder?
Choose this 63mm bore when you need more power than a 50mm cylinder (982N push at 0.5MPa) but less bulk than an 80mm unit (2513N). The adjustable stroke is ideal for applications requiring precise end-position tuning at setup, serving as a physical stop rather than a lock. If you need to hold a load without live air pressure, use an external rod lock or select a SAIL or BSAI cylinder. To match this ISO 15552 cylinder, confirm the 63mm bore, 20mm stroke, 20mm adjuster, PT port, and -S magnet.
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 SAIJ63AX20-20S FAQ
At 0.5 MPa operating pressure, this 63mm bore cylinder provides 1559N of push force and 1402N of pull force. It can reach up to 2805N push force at 0.7 MPa.
The rear adjusting screw acts as a mechanical stop that lets you trim the effective travel back by up to 20mm. Since the nominal stroke is 20mm, you can set the usable travel anywhere within a 0 to 20mm window.
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