Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-40 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 SAIJ100BX900-40
The AirTAC SAIJ100X900-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 860-900 mm usable travel window, letting you dial back the 900 mm nominal stroke by up to 40 mm without adding external stops. The 100 mm bore delivers 5497 N of push force at 0.7 MPa, making it suitable for heavy-duty positioning tasks.
This unit uses a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads. It includes variable air cushions at both ends to manage kinetic energy. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure; for true load-holding, consider the SAIL or BSAI series.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-40 |
|---|---|
| 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 SAIJ100BX900-40
| 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 SAIJ100BX900-40 Is Used
Heavy Press Setup
Dial in the exact 860-900 mm end position during machine commissioning to accommodate varying material thicknesses without swapping cylinders.
Diversion Arm Stop
Adjust the retract stop on the fly during product size changeovers to reposition a heavy sorting arm accurately.
Assembly Line Indexing
Fine-tune the travel window on automated assembly equipment to compensate for mechanical wear over time.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-40 the Right Cylinder?
Choose this 100 mm bore when you need more force than the 80 mm version (3518 N push at 0.7 MPa) but want to avoid the larger footprint of a 125 mm cylinder. An adjustable-stroke model is preferred over a fixed SAI cylinder when you need fine end-position tuning during commissioning or frequent product changeovers. The 25 mm rod and M20x1.5 thread handle high side loads, but at 900 mm of stroke, you must use an external guide to prevent rod bending.
To match this ISO 15552 cylinder for a replacement, verify the 100 mm bore, 900 mm stroke, 40 mm adjustment range, PT G1/2 port, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). This specific configuration lacks a magnet, so it will not work with CMSE or DMSE sensors without modification.
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 SAIJ100BX900-40 FAQ
At a 0.7 MPa operating pressure, the 100 mm bore provides 5497 N of push force and 3681 N of pull force. The maximum push force is 7068 N at 0.9 MPa.
The rear adjuster screw lets you shorten the 900 mm nominal stroke by up to 40 mm, creating an 860-900 mm usable travel window. It acts as a mechanical stop for end-position tuning and does not lock the load without live air.
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