Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-40 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 SAIJ100BX185-40
The AirTAC SAIJ100X185-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 145 to 185 mm, allowing you to dial back the nominal 185 mm stroke by up to 40 mm. In this configuration, the unit delivers a robust 3927 N of push force at 0.5 MPa and features a SUS304 stainless steel rod for superior corrosion resistance.
This model utilizes PT tapered port threads and lacks a piston magnet. The extruded aluminum barrel includes dual-side sensor grooves, while the adjustable rear stopper enables precise end-position tuning at commissioning. It is important to note that this rear adjuster acts only as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-40 |
|---|---|
| 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 SAIJ100BX185-40
| 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 SAIJ100BX185-40 Is Used
Machine Setup Tuning
Dial in the 145-185 mm travel window during initial commissioning to perfectly align a heavy press or clamp without machining external spacers.
Product Changeover
Quickly adjust the retract end-position by up to 40 mm when switching between different sized packages or parts on the same conveyor line.
Corrosive Environments
Leverage the SUS304 stainless steel rod in washdown or humid manufacturing areas where carbon steel rods would degrade over time.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-40 the Right Cylinder?
Choose this 100 mm bore when the 80 mm variant (2268 N pull at 0.5 MPa) cannot provide enough thrust, but the 125 mm bore is excessive. The 40 mm adjustment range is ideal for product changeovers on a line, letting you fine-tune the end stop without swapping the cylinder or adding external stops. For load-holding without continuous air pressure, this plain SAIJ is insufficient; consider the SAIL or BSAI series instead.
As an ISO 15552 profile cylinder, it is dimensionally interchangeable with standard cylinders. To match this exact configuration, specify a 100 mm bore, 185 mm stroke, 40 mm adjustment, PT port threads, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and no magnet. Because the stroke is under 300 mm, side-load stress is minimal, though external guides are still recommended for heavy radial loads.
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 SAIJ100BX185-40 FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 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 of push thrust.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from the nominal 185 mm down to as little as 145 mm. This allows precise end-position tuning during setup without needing to replace the cylinder.
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