Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 700mm 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
- Stroke700 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-40
The AirTAC SAIJ80X700-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 660-700 mm usable travel window. Delivering 3518 N of push force at 0.7 MPa, it handles heavy positioning tasks. The extruded aluminum barrel includes dual sensor grooves, and the rod is crafted from SUS304 stainless steel for superior corrosion resistance.
Instead of bolting on external stops, the rear adjuster screw allows precise end-position tuning during commissioning or product changeover. The standard PT G3/8 port and 25 mm rod diameter ensure robust airflow and side-load capacity. Remember, this adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 700 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 SAIJ80BX700-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×700 | 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 SAIJ80BX700-40 Is Used
Variable End-Stop Tuning
Dial in the exact retract position within the 660-700 mm window during machine setup without swapping out the entire cylinder.
Product Size Changeover
Quickly adapt the retract stroke distance on packaging lines when handling different carton lengths or product widths.
Heavy Fixture Positioning
Leverage the 3518 N push force to move heavy jigs while using the rear screw to fine-tune the final resting position.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-40 the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore (offering 1374 N at 0.5 MPa) lacks the thrust for your heavy fixtures, but a 100 mm bore is overkill. The 40 mm rear adjustment is ideal for dialing in exact retract positions on the fly. For load-holding without continuous air, select the SAIL or BSAI series instead, as the SAIJ adjuster is not a lock.
With a 700 mm stroke, the unsupported piston rod is highly susceptible to side loads. An external guide is strongly recommended to prevent rod bending and premature seal wear. This cylinder uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and is dimensionally interchangeable with ISO 15552 cylinders.
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 SAIJ80BX700-40 FAQ
At an operating pressure of 0.7 MPa, this 80 mm bore cylinder generates 3518 N of push force and 2268 N of pull force. It can deliver up to 4523 N of push force at 0.9 MPa.
The rear adjuster screw allows you to shorten the effective stroke from 700 mm down to 660 mm. It acts as a mechanical stop for end-position tuning and is not a lock, meaning the cylinder requires live air to hold its position.
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