Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX150-75
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX150-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 150mm 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
- Stroke150 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX150-75
The AirTAC SAIJ63X150-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a generous 75 mm trim range, allowing you to dial the effective travel down anywhere from 150 mm to a minimum of 75 mm. This wide adjustment window is perfect for prototyping or production lines where end-position requirements frequently shift. Belonging to the 63 mm bore class, it delivers 1559 N of pull force and 2182 N of push force at 0.5 MPa.
This unit is built with an SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance compared to standard carbon steel. It uses PT tapered port threads (G3/8) and operates at speeds between 30 and 800 mm/s. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept AirTAC CMSE reed or DMSE electronic switches if a magnet is required later.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX150-75 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX150-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 150 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 SAIJ63AX150-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×150 | 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 SAIJ63AX150-75 Is Used
Machine Changeover
Quickly reconfigure the cylinder's end-stop from 150 mm down to 75 mm to accommodate different product sizes on the same production line.
Prototype Positioning
Dial in the exact retraction point during equipment commissioning without machining new hard stops or changing the ISO 15552 mounting footprint.
Variable End Stops
Provide a flexible 75 to 150 mm travel window in automated assembly stations where part dimensions vary between production runs.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX150-75 the Right Cylinder?
Choose this 63 mm bore when an application requires around 1559 N of pull force at 0.5 MPa; stepping down to a 50 mm bore drops that figure to 825 N, while an 80 mm bore increases it to 2268 N. The SAIJ63X150-75 is selected over a fixed-stroke SAI when you need on-the-fly end-position tuning without swapping cylinders or adding external stops. Because the 150 mm stroke is under 300 mm, side-load stress is moderate, but an external guide should still be used for heavy lateral loads.
When ordering, confirm the bore, 150 mm stroke, 75 mm adjustment range, PT G3/8 port, and the SUS420J2 rod material. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. Remember that the rear adjuster is a travel stop, not a lock; for load-holding without live air pressure, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ63AX150-75 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder generates 2182 N of push force and 1559 N of pull force. At 0.7 MPa, the push force increases to 2805 N.
The rear adjuster screw acts as a mechanical stop that shortens the retraction stroke. For this model, you can trim the effective travel anywhere from its nominal 150 mm down to 75 mm. It only sets the end position and does not hold the load without continuous air pressure.
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