Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-40 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 SAIJ100X900-40
The AirTAC SAIJ100X900-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a substantial 7068N of push force at 0.9 MPa and uses a G1/2 port with a 25mm carbon steel rod. The integrated rear stopper allows you to trim the effective travel, creating an 860-900mm usable window to perfectly dial in the retract end-position during commissioning.
This adjustable capability eliminates the need to swap out the entire cylinder or bolt on external stops when product dimensions change slightly. It includes variable air cushions at both ends to absorb kinetic energy, but remember the adjuster acts purely as a travel stop, not a lock, so the load requires live air to maintain position. The extruded aluminum barrel features sensor grooves on both sides for flexible switch placement.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-40 |
|---|---|
| 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 SAIJ100X900-40
| 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 SAIJ100X900-40 Is Used
Long-Stroke Position Tuning
Dial in the exact 860-900mm retract position on large machining centers or material handlers without disassembling the fixture to add washers.
Product Changeover Diverter
Quickly adjust the end-stop for different package sizes on a 900mm stroke conveyor sorting line by turning the rear screw up to 40mm.
Heavy-Duty Press Setup
Leverage 7068N of push force to move heavy pallets, fine-tuning the final resting position during machine commissioning to prevent crashes.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-40 the Right Cylinder?
Choose this 100mm bore when an 80mm bore (providing 4523N push force at 0.9 MPa) is insufficient for your load requirements, or step down from a 125mm bore (offering 11045N) if you need to save space and reduce air consumption. An adjustable stroke is highly beneficial here because fine-tuning a 900mm travel window via the 40mm rear screw is far easier than machining custom spacers for a fixed-stroke SAI cylinder. To match this ISO 15552 cylinder, specify the 100mm bore, 900mm stroke, 40mm adjustment, PT tapered port threads, and your desired mounting style.
Because this model features a 900mm stroke, the extended 25mm rod with an M20x1.5 thread can carry significant side loads, but an external guide rail is still recommended to prevent rod binding over long distances. If your application requires true load-holding without continuous air pressure, consider the SAIL or BSAI series instead, as this standard SAIJ adjuster does not function as a brake.
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 SAIJ100X900-40 FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 40mm, providing a usable travel window of 860 to 900mm. It acts as a physical stop for the retract end-position and does not lock the load without live air pressure.
At 0.9 MPa, the SAIJ100X900-40 provides a push force of 7068N and a pull force of 3681N. The maximum operating pressure is 1.0 MPa, and it operates at speeds between 30 and 800 mm/s.
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