Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 800mm 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
- Stroke800 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-40
The AirTAC SAIJ100X800-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers 3927N of push force at 0.5 MPa and supports a generous 800mm nominal stroke. The built-in rear stopper allows you to fine-tune the travel end-position, providing a usable adjustment window of 760 to 800mm without adding external stops. This cylinder uses a SUS304 stainless steel rod and a PT tapered port thread for secure pneumatic connections.
Because the adjuster acts solely as a mechanical stop on the retract end, it cannot hold a load without live air pressure. For position holding, an external pilot-operated check valve or a related AirTAC lock model like SAIL or BSAI is required. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting interface is dimensionally interchangeable with ISO 15552 cylinders.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 800 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 SAIJ100BX800-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×800 | 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 SAIJ100BX800-40 Is Used
Machine Setup & Changeover
Dial in the exact 760 to 800mm end-position during product size changes on a packaging line without physically swapping the cylinder.
Variable End-Stop Diverter
Adjust the retract stroke on the fly to accommodate different pallet sizes or diverting distances along a heavy-duty material handling conveyor.
Assembly Press Tuning
Fine-tune the pressing depth of a 3927N assembly operation at commissioning, ensuring precise contact without adding bulky external mechanical stops.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-40 the Right Cylinder?
Choose this 100mm bore cylinder when your application requires substantial thrust, such as 5497N at 0.7 MPa, combined with precise end-stop tuning. The adjustable 760-800mm travel window is ideal for machine setups that require commissioning fine-tunes or product changeovers, offering flexibility a fixed-stroke SAI cylinder cannot match. If your force needs are lower, stepping down to a 63mm bore yields 1559N at 0.5 MPa.
For a stroke of 800mm, the 25mm rod diameter and M20x1.5 rod thread provide rigidity, but the long unsupported length means you must use an external guide to prevent excessive side-loading. This SAIJ model uses the reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. It operates at 30-800mm/s and lacks a magnet, so position sensing requires adding external switches or confirming a custom -S variant.
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 SAIJ100BX800-40 FAQ
At a 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At 0.7 MPa, the push force increases to 5497N.
The rear adjusting screw acts as a mechanical stop that lets you trim the effective travel back by up to 40mm. This creates a usable stroke window of 760 to 800mm, allowing you to fine-tune the end position at commissioning. The adjuster is a stop, not a lock, and cannot hold the load without live air pressure.
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