Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 145mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke145 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-75
The AirTAC SAIJ100X145-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 145 mm stroke that can be dialed back by up to 75 mm, giving you a wide 70-145 mm usable travel window for highly flexible end-position tuning. Delivering 3927 N of push force at 0.5 MPa, it handles heavy loads while maintaining the standard ISO 15552 mounting interface.
This variant features a SUS420J2 stainless steel rod (material code A) for improved corrosion resistance compared to standard carbon steel. The rear adjustment screw acts purely as a travel stop to set the retract position during commissioning. It does not lock the load without live air pressure, so separate holding valves or lock cylinders are needed for fail-safe positioning.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 145 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×145 | 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 SAIJ100 Adjustable Cylinder SAIJ100AX145-75 Is Used
Variable End-Stop Machining
Dial in the exact 70-145 mm retract position for machining different part lengths without physically changing the cylinder or adding external stopper blocks.
Product Changeover
Rapidly adjust the stroke window during packaging line format changes, using the rear screw to fine-tune the end position for new carton sizes.
Heavy-Duty Assembly Press
Leverage the 3927 N push force at 0.5 MPa for pressing operations, while using the 75 mm adjustment range to set precise safe travel limits.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-75 the Right Cylinder?
Choose this 100 mm bore when your application requires substantial thrust—stepping up from a 63 mm bore increases your 0.5 MPa push force from 1559 N to 3927 N. The 75 mm adjustment range is ideal for machines processing variable product sizes, allowing you to reposition the end stop on the fly instead of swapping out a fixed-stroke SAI cylinder or fabricating external bumpers.
When matching an ISO 15552 replacement, verify the 145 mm stroke, 75 mm adjustment requirement, PT G1/2 port thread, and your preferred mounting accessory (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Because this SKU uses a 25 mm rod and a 145 mm stroke, the assembly is compact, but any future upgrades to longer unsupported strokes will require an external guide to prevent excessive side-loading on the rod.
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 SAIJ100 Adjustable Cylinder SAIJ100AX145-75 FAQ
At 0.5 MPa it provides 3927 N of push force and 3681 N of pull force. It operates on filtered air from 0.15 to 1.0 MPa, runs at speeds up to 800 mm/s, and uses a PT G1/2 port.
The rear adjuster screw lets you trim the 145 mm nominal stroke back by up to 75 mm, creating a 70-145 mm travel window. It acts only as a mechanical stop to fine-tune the end position and does not hold the load without continuous air pressure.
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