Airtac SAIJ100 Adjustable Cylinder SAIJ100BX165-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX165-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 165mm 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
- Stroke165 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX165-50
The AirTAC SAIJ100X165-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 3927N of push force at 0.5 MPa. Its integrated stopper allows you to trim the nominal 165mm travel back by up to 50mm, creating a precise 115-165mm usable window. This eliminates the need to swap cylinders or bolt on external stops during machine commissioning.
This configuration features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads with a G1/2 connection. The extruded aluminum barrel includes sensor grooves on both sides, and the rod end is machined to an M20x1.5 thread. While the rear adjuster sets the travel end and the adjustable air cushions decelerate the load, neither component will hold a load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX165-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX165-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 165 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 SAIJ100BX165-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×165 | 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 SAIJ100BX165-50 Is Used
Product Changeover
Dial in the 115-165mm travel window during format changes on packaging lines without physically replacing the actuator.
End-Stop Tuning
Fine-tune the final retract position during machine setup to perfectly align heavy clamping or pressing actions.
Variable Positioning
Adjust the stroke endpoint on the fly for automated assembly equipment handling slightly different part sizes.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX165-50 the Right Cylinder?
Selecting this 100mm bore over a smaller 80mm option steps the thrust up from 2513N to 3927N at 0.5 MPa, while moving up from the 100mm bore to a 125mm version increases output to 6136N. Choose the SAIJ adjustable-stroke design over a fixed SAI cylinder when your application requires variable end-stops or fine-tuning during product changeovers. To match this exact configuration for an ISO 15552 replacement, specify the 100mm bore, 165mm stroke, 50mm adjustment, PT port thread, SUS304 rod, and no magnet.
Because the nominal stroke of 165mm is relatively short, side-loading is less of a concern than with longer strokes, but the robust 25mm rod and M20x1.5 thread handle higher offset stresses well. For applications that require true load-holding without continuous air pressure, pair this cylinder with an external pilot-operated check valve or explore the AirTAC SAIL or BSAI locking cylinder series.
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 SAIJ100BX165-50 FAQ
At a 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At 0.7 MPa, the push force increases to 5497N.
The rear adjuster acts as a mechanical stop that allows you to shorten the 165mm nominal stroke by up to 50mm, providing a usable travel range of 115-165mm. It only sets the end position and does not lock the load.
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