Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-30
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 45mm 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
- Stroke45 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-30
The AirTAC SAIJ100X45-30 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 3927N push force at 0.5 MPa and uses a robust 25mm piston rod with M20x1.5 threading. By turning the rear stopper screw, you can trim the effective travel back by up to 30mm, creating a precise 15-45mm usable stroke window for exact end-position tuning at commissioning.
This unit is configured with a SUS304 stainless steel rod (option B) for superior corrosion resistance and includes PT tapered port threads (G1/2). The extruded aluminum barrel integrates sensor grooves on both sides for CMSE reed or DMSE electronic switches. Remember that the rear adjuster acts as a travel stop and deceleration aid, not a lock; it will not hold a load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 45 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 SAIJ100BX45-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×45 | 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 SAIJ100BX45-30 Is Used
Product Changeover Tuning
Dial in the 15-45mm stroke window during packaging line size changes to set exact pressing depth without replacing hardware.
End-Stop Calibration
Fine-tune the final retract position during machine commissioning, using the rear screw to absorb mechanical tolerances perfectly.
Variable Positioning Stops
Adjust the travel end-point on the fly for flexible assembly processes that require different clamping distances.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-30 the Right Cylinder?
Choose this 100mm bore cylinder when your application requires substantial thrust—stepping up from a 63mm bore gives you 3927N of push force at 0.5 MPa compared to 1559N. The adjustable stroke is perfect for machine changeover, allowing you to fine-tune the 15-45mm travel window on the fly without swapping cylinders or adding external stops. If your process requires holding a load without continuous air pressure, you must look at the SAIL or BSAI series instead, as the SAIJ adjuster is strictly a stop.
For a direct ISO 15552 replacement, match the 100mm bore, 45mm nominal stroke, 30mm adjustment range, G1/2 PT port, and your desired mounting option from the SAIJ set: Basic, FA, LB, TC, FTC, TCM1, or TCM2. Because this configuration omits the FB, CA, CB, and CR mounts, verify your bracket compatibility. The 25mm rod and M20x1.5 thread handle high side-loads, though any stroke over 300mm would still require an external guide.
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 SAIJ100BX45-30 FAQ
At 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 801 kgf of push force.
The rear stopper screw allows you to trim the nominal 45mm stroke back by up to 30mm. This creates a usable travel window of 15-45mm, enabling exact end-position tuning without changing the cylinder or adding external stops.
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