Airtac SAIJ100 Adjustable Cylinder SAIJ100BX450-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX450-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 450mm 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
- Stroke450 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX450-20S
The AirTAC SAIJ100X450-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 450 mm travel by up to 20 mm for a precise 430-450 mm usable window. Delivering 3927 N of push force at 0.5 MPa, it handles heavy-duty positioning tasks with ease. This variant features a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for position sensing.
Because the stroke extends to 450 mm, the 25 mm rod and M20x1.5 thread should be paired with an external guide to prevent excessive side-loading on the extended rod. The rear screw acts purely as a mechanical stop to fine-tune the retract end position during commissioning without requiring external stops. It is not a locking device, so load-holding without live air requires a SAIL or BSAI variant.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX450-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX450-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 450 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 SAIJ100BX450-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×450 | 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 SAIJ100BX450-20S Is Used
Machine Setup Changeover
Quickly fine-tune the 430-450 mm end-stop during product size changes without physically swapping the actuator or adding shims.
Heavy Material Handling
Leverages 3927 N of push force at 0.5 MPa to shift heavy workpieces, while the SUS304 rod withstands harsh industrial environments.
Variable End-Stop Positioning
Ideal for assembly lines where the exact retract distance must be dialed in precisely during commissioning to meet sensor targets.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX450-20S the Right Cylinder?
Choose this 100 mm bore when the 50 mm class (offering 982 N push at 0.5 MPa) is insufficient, but a 125 mm bore (6136 N) would be excessive. The adjustable 430-450 mm window is ideal for product changeovers on a line, letting operators fine-tune the end position without swapping the cylinder. For static positioning, remember the adjuster only sets the travel limit.
To match this ISO 15552 dimensionally interchangeable cylinder, specify: 100 mm bore, 450 mm stroke, 20 mm adjustment, PT tapered port threads, G1/2 port size, and the -S magnet for CMSE reed or DMSE electronic sensors. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
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 SAIJ100BX450-20S 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 0.7 MPa, the push force increases to 5497 N.
The rear adjuster screw allows you to shorten the 450 mm nominal stroke by up to 20 mm, creating a 430-450 mm travel window. It functions as a mechanical stop for end-position tuning, not a lock, and requires live air to hold the load.
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