Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-50S 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 SAIJ100BX185-50S
The AirTAC SAIJ100X185-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 135 to 185 mm. Driven by a 25 mm piston rod, it delivers 3927 N of push force at 0.5 MPa and safely handles dynamic loads via its 36 mm air cushions at both ends. The integrated -S magnet enables precise position detection with AirTAC CMSE reed and DMSE electronic sensors.
This variant features a SUS304 stainless steel rod (code B) for superior corrosion resistance in wet or washdown environments. The PT tapered port threads ensure a robust pneumatic seal, while the extruded aluminum barrel maintains standard ISO 15552 mounting dimensions without relying on external tie-rods.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-50S |
|---|---|
| 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 SAIJ100BX185-50S
| 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 SAIJ100BX185-50S Is Used
Product Size Changeovers
Quickly fine-tune the 135-185 mm travel window during packaging line format changes without replacing the cylinder or adding external mechanical stops.
Variable End-Stop Positioning
Dial in the exact retraction point for machining or clamping operations, leveraging the 3927 N push force to secure heavy workpieces accurately.
Washdown Actuation
Utilize the SUS304 stainless steel rod and 0.15-1.0 MPa operating range for reliable actuation in food processing or chemical environments requiring frequent washdowns.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-50S the Right Cylinder?
Select this 100 mm bore cylinder when an application requires substantial thrust—up to 5497 N at 0.7 MPa—combined with on-the-fly end-position tuning. If you need less force, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa, whereas moving up to a 125 mm bore provides 6136 N. The 50 mm rear adjustment screw allows you to dial back the 185 mm nominal stroke without swapping hardware during product changeovers. Note that the rear adjuster acts strictly as a mechanical stop; it does not lock the load. For position holding without live air pressure, consider an AirTAC SAIL or BSAI cylinder.
Because the 185 mm stroke is relatively short, side-loading is less severe than in long-stroke applications, but external guides should still be used to prevent rod binding. This model is dimensionally interchangeable with ISO 15552 cylinders and supports a reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Operating speed ranges from 30 to 800 mm/s.
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 SAIJ100BX185-50S FAQ
The rear adjusting screw acts as a mechanical stopper, allowing you to shorten the effective stroke by up to 50 mm. This creates a usable travel window of 135 to 185 mm, which is set mechanically during commissioning without needing live air to hold the position.
At 0.5 MPa, the SAIJ100X185-50-S generates 3927 N of push force and 3681 N of pull force. If operated at 0.7 MPa, the push force increases to 5497 N.
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