Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-30
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 185mm 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
- Stroke185 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-30
The AirTAC SAIJ100X185-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window from 155 to 185 mm. Delivering 3927 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for superior corrosion resistance. The extruded aluminum barrel includes dual sensor grooves for straightforward position monitoring.
This model uses a PT tapered G1/2 port and relies on variable air cushions at both ends to decelerate the load. The rear adjustment screw acts purely as a mechanical stop to dial in the exact end position during commissioning. It is not a locking device, so load-holding without live air pressure requires an external rod lock or a related type like SAIL or BSAI.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 185 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 SAIJ100BX185-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×185 | 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 SAIJ100BX185-30 Is Used
Machine Changeover
Dial in the exact 155-185 mm end-stop during product size changes on a packaging line without swapping out the entire cylinder.
End-Position Tuning
Fine-tune the retract stroke at commissioning to compensate for mechanical tolerances in a multi-axis assembly fixture.
High-Force Positioning
Leverage the 3927 N push force to move heavy pallets while precisely trimming the travel window to avoid hard crashes.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-30 the Right Cylinder?
Choose this 100 mm bore when an 80 mm cylinder lacks thrust, as the step up nearly doubles the force from 2513 N to 3927 N at 0.5 MPa. The adjustable 155-185 mm travel window is ideal for product changeovers on a line where fixed-stroke SAI cylinders would require physical shimming. For a true drop-in ISO 15552 replacement, match the 100 mm bore, 185 mm nominal stroke, 30 mm adjuster, PT G1/2 port, and your required mounting accessory. Available SAIJ mountings are Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Because the 25 mm rod and M20x1.5 thread provide robust resistance to side loading, this cylinder handles demanding setups, though any stroke over 300 mm would still need an external guide. The operating speed range is 30-800 mm/s. If you need position feedback, adding a -S magnet version allows the use of AirTAC CMSE reed or DMSE electronic sensors.
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 SAIJ100BX185-30 FAQ
At a 0.5 MPa operating pressure, this 100 mm bore cylinder generates 3927 N of push force and 3681 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 801 kgf.
The rear adjuster screw lets you shorten the 185 mm nominal stroke by up to 30 mm, creating a usable travel window of 155 to 185 mm. The adjuster functions only as a travel stop and does not lock the load without continuous air pressure.
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