Airtac SAIJ100 Adjustable Cylinder SAIJ100BX450-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX450-20 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 SAIJ100BX450-20
The AirTAC SAIJ100X450-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster, providing a usable travel window of 430 to 450 mm. Delivering 5497 N of push force at 0.7 MPa, it is built to handle heavy loads in demanding environments. The extruded aluminum barrel includes sensor grooves on both sides, and the rod is constructed from SUS304 stainless steel for superior corrosion resistance.
This model uses a PT G1/2 port and reaches speeds of 30-800 mm/s. The external rear screw allows you to fine-tune the retract end-position at commissioning without swapping the cylinder or adding external stops. The adjuster acts purely as a travel stop for the air cushion, not a lock, meaning it will not hold a load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX450-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX450-20 |
|---|---|
| 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 SAIJ100BX450-20
| 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 SAIJ100BX450-20 Is Used
Machine Changeovers
Dial in the 430-450 mm retract position during product size transitions without disassembling tooling or adding external shims.
Variable End Stops
Use the rear adjuster to set precise deceleration points for the integrated air cushion, tuning the end-of-travel impact on the fly.
Corrosive Assembly Lines
Leverage the SUS304 stainless steel rod and 5497 N of force to drive heavy presses in washdown or mildly corrosive industrial settings.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX450-20 the Right Cylinder?
Choose this 100 mm bore when a 80 mm bore (providing 3518 N push at 0.7 MPa) is insufficient, but a 125 mm bore is excessive. The adjustable 20 mm window is ideal for product-size changeovers on a line, allowing precise variable end-stops without machining new fixed stops. For load-holding without live pressure, you must integrate an external rod lock or use an AirTAC SAIL or BSAI cylinder, as the SAIJ adjuster is not a brake.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 450 mm stroke, 20 mm adjustment, PT G1/2 port, and your required mounting style. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, explicitly omitting FB, CA, CB, and CR. Because the 450 mm stroke is long, the 25 mm rod and M20x1.5 thread carry significant side-load capacity, but an external guide is still recommended for unsupported 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 SAIJ100BX450-20 FAQ
At 0.7 MPa, this 100 mm bore cylinder provides 5497 N of push force and 3681 N of pull force. It can reach a maximum of 801 kgf at 1.0 MPa.
The rear adjuster screw lets you trim the effective travel back by up to 20 mm, creating a 430 to 450 mm usable window. It acts as a mechanical stop for the cushion and does not lock the load without continuous air pressure.
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