Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX120-100
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX120-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 120mm 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
- Stroke120 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX120-100
The AirTAC SAIJ63X120-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 120 mm stroke that can be dialed back by up to 100 mm, yielding a highly flexible 20 to 120 mm usable travel window for precise end-position tuning. Equipped with a G3/8 port and a 20 mm rod, it delivers 1559 N of push force at 0.5 MPa.
This variant uses an SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU is supplied without a magnet. The rear stopper allows you to shorten the effective stroke at commissioning without swapping the cylinder or adding external stops.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX120-100 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX120-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 120 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 SAIJ63AX120-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×120 | 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 SAIJ63AX120-100 Is Used
Product Changeover
Dial in the exact end-stop for varying part lengths on a single fixture, utilizing the 20 to 120 mm window to avoid physically swapping cylinders.
Prototype Setup
Fine-tune the retract position during machine commissioning to find the optimal operating distance before locking down the rear screw.
Variable End Stops
Accommodate multiple product sizes on a single conveyor line by adjusting the cylinder's effective stroke on the fly.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX120-100 the Right Cylinder?
Choose this 63 mm bore when an application requires approximately 1559 N of thrust at 0.5 MPa, stepping up from a 50 mm bore (982 N push) or down from an 80 mm bore (2513 N push). The massive 100 mm adjustment range is ideal for prototypes or product lines requiring frequent size changeovers, replacing the need to stock multiple fixed-stroke SAI cylinders. Mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Because the nominal stroke is 120 mm, side-load risks are minimal, but always ensure the load is guided externally. The rear adjuster acts strictly as a travel stop and does not hold the load without live air; for dead-air load holding, consider an AirTAC SAIL or BSAI cylinder. When replacing an ISO 15552 unit, match the 63 mm bore, 120 mm stroke, 100 mm adjuster, PT ports, and the specified mounting hardware.
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 SAIJ63AX120-100 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
The rear adjuster screw acts as a mechanical stop, allowing you to trim the effective travel down from the 120 mm nominal stroke to as little as 20 mm. It only sets the end position and does not lock the load without live air pressure.
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