Airtac SAIJ80 Adjustable Cylinder SAIJ80BX900-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX900-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 900mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke900 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX900-40S
The AirTAC SAIJ80X900-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 860 to 900 mm. Delivering 2513 N of push force at 0.5 MPa, it handles substantial loads while allowing precise end-position tuning during commissioning without swapping the cylinder. The extruded aluminum barrel features sensor grooves on both sides for flexible switch placement.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and carries an integrated magnet for position detection. It works seamlessly with AirTAC CMSE reed and DMSE electronic sensors. The G3/8 port and M20x1.5 rod thread ensure robust pneumatic flow and structural integrity, while the rear stopper allows 40 mm of stroke refinement without adding external stops.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX900-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX900-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 900 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80BX900-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | 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 SAIJ80 Adjustable Cylinder SAIJ80BX900-40S Is Used
Variable End-Stop Machining
Dials in the exact clamping reach within the 860-900 mm window during machine setup, allowing operators to fine-tune positions for different part lengths without changing cylinders.
Product Changeover Diverter
Adjusts the stroke on a sorting diverter to accommodate varying package sizes on a conveyor line, using the 40 mm rear stopper to quickly reset the end position.
Long-Stroke Assembly Press
Provides 2513 N of push force at 0.5 MPa for assembly operations, using the SUS304 rod to resist moisture in wash-down environments while handling long 900 mm travels.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX900-40S the Right Cylinder?
Choose this 80 mm bore when an application requires more force than the 63 mm class (1559 N push at 0.5 MPa) but does not need the full output of a 100 mm cylinder (3927 N). The adjustable stroke is ideal for machine setups requiring variable end-stops or product changeovers, functioning as a travel stop rather than a load lock. Because it lacks live-air locking capabilities, use a SAIL or BSAI cylinder if the load must be held securely without continuous air pressure.
For an exact ISO 15552 replacement, match the 80 mm bore, 900 mm stroke, 40 mm adjustment code, PT port threads, and the -S magnet requirement. Given the 900 mm stroke, the M20x1.5 rod will experience amplified leverage under side loads; an external guide rail is strongly recommended to prevent premature seal wear and ensure smooth operation across the 860-900 mm adjustable range.
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 SAIJ80 Adjustable Cylinder SAIJ80BX900-40S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At 0.7 MPa, the push force increases to 3518 N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke by up to 40 mm, creating an 860 to 900 mm usable travel window. It only sets the end position and does not lock the load without live air pressure.
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