Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-100
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 900mm 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
- Stroke900 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-100
The AirTAC SAIJ100X900-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 7068N of push force at 0.9 MPa and utilizes a SUS304 stainless steel rod. By turning the rear stopper screw, you can fine-tune the effective travel window down from the 900 mm nominal stroke, providing a usable 800-900 mm range to perfectly dial in end positions.
This adjustable-stroke design eliminates the need to physically swap cylinders or bolt on external stops during machine commissioning or product changeovers. The 25 mm rod and M20x1.5 thread provide substantial side-load resistance, though a stroke of this length still requires an external guide to prevent rod sag. It features variable air cushions at both ends to decelerate the load smoothly, and its extruded aluminum barrel includes sensor grooves on both sides.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-100 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 900 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 SAIJ100BX900-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×900 | 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 SAIJ100BX900-100 Is Used
Variable End-Position Tuning
Dial in the exact 800 to 900 mm retraction point during machine setup without replacing the cylinder or adding external mechanical stops.
Product Changeover Adjustment
Quickly adapt the stroke length on a packaging line to handle different box sizes by adjusting the rear stopper screw during shift changes.
Long-Stroke Press Setup
Fine-tune the bottoming position of a heavy-duty press operation, utilizing the 7068N push force at 0.9 MPa to secure or form components accurately.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-100 the Right Cylinder?
Choose this 100 mm bore when your application requires heavy thrust that a 80 mm bore cannot provide, stepping up from 4523N to 7068N of push force at 0.9 MPa. If your force requirements are lower, dropping to an 80 mm bore saves air consumption and physical footprint. The SAIJ100X900-100 is selected specifically when a fixed 900 mm stroke SAI cylinder is too rigid, allowing 100 mm of rear mechanical adjustment to accommodate varying product sizes on the same line.
When matching this cylinder for an ISO 15552 replacement, verify the 100 mm bore, 900 mm stroke, 100 mm adjustment code, PT tapered G1/2 port, and the required mounting accessory from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the nominal stroke is 900 mm, an external linear guide is strongly recommended to prevent excessive side-loading on the rod. Note that the rear adjuster acts only as a travel stop; it does not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI 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 SAIJ100BX900-100 FAQ
At a 0.9 MPa operating pressure, this 100 mm bore cylinder provides 7068N of push force and 3681N of pull force. The maximum thrust at 1.0 MPa is 801 kgf.
The rear adjuster acts as a mechanical stopper that trims the effective travel back by up to 100 mm. This creates a usable 800-900 mm stroke window, allowing you to fine-tune the retract end-position at commissioning without altering the air cushions.
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