Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-20 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 SAIJ100BX900-20
The AirTAC SAIJ100X900-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 880 to 900 mm, allowing you to dial back the nominal stroke by up to 20 mm during commissioning. Delivering a robust 7068 N of push force at 0.9 MPa, it is built to handle heavy-duty positioning tasks.
This variant uses a SUS304 stainless steel rod for superior corrosion resistance and features a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept AirTAC CMSE reed or DMSE solid-state switches if a magnet is added later. The rear adjuster acts purely as a mechanical stop to fine-tune the end position and decelerate the travel, but it does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-20 |
|---|---|
| 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 SAIJ100BX900-20
| 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 SAIJ100BX900-20 Is Used
Heavy Press Setup
Dial in the exact 880-900 mm end position during machine commissioning to ensure perfect pressing depth without machining custom spacers.
Product Changeover
Quickly adjust the stroke by up to 20 mm to accommodate different package sizes on an automated line, minimizing downtime between production runs.
Long-Stroke Positioning
Move heavy loads with 7068 N of force at 0.9 MPa while relying on the rear stopper to precisely tune the final retract position.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-20 the Right Cylinder?
Choose this 100 mm bore when you need substantial thrust, such as the 5497 N push force at 0.7 MPa, which sits well above the 3518 N provided by the smaller 80 mm bore. The adjustable stroke is highly beneficial for machine setup and product changeover, letting you fine-tune the end position without swapping the cylinder or adding external stops. For load-holding without continuous air pressure, consider the SAIL or BSAI series, as the SAIJ adjuster is a stop, not a lock.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 900 mm stroke, 20 mm adjustment, PT G1/2 port, and your required mounting choice from the SAIJ set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the stroke is 900 mm, the long unsupported piston rod requires an external guide to prevent excessive side-loading and premature seal wear.
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 SAIJ100BX900-20 FAQ
At 0.7 MPa it provides 5497 N of push force and 3681 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
The rear adjuster screw lets you shorten the effective travel from the nominal 900 mm down to 880 mm. It functions as a mechanical stop for end-position tuning, not a lock, so it cannot hold the load without live air pressure.
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