Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-75S 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 SAIJ80BX700-75S
The AirTAC SAIJ80X700-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel end-position at commissioning. With a nominal 700 mm stroke and a 75 mm adjustment range, it provides a highly flexible 625-700 mm usable travel window, letting you dial in exact stops without swapping hardware. It delivers a robust 3518N push force at 0.7 MPa, making it suitable for heavy-duty positioning tasks.
This variant is equipped with a SUS304 stainless steel rod for superior corrosion resistance and includes a built-in magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. It uses a PT tapered G3/8 port and relies on the standard extruded aluminum barrel with sensor grooves on both sides. The rear adjuster acts purely as a mechanical stop to set deceleration and travel limits, meaning it will not hold a load without continuous live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-75S |
|---|---|
| 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 SAIJ80BX700-75S
| 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 SAIJ80BX700-75S Is Used
Machine Changeover Setup
Quickly dial in the 625-700 mm travel window during product size changeovers, using the rear adjuster to set new end positions without disassembling the line.
Variable End-Stop Positioning
Provides a precise mechanical stop for heavy conveyor diverters or pushers, allowing up to 75 mm of stroke adjustment to handle varying package dimensions.
Long-Stroke Assembly Pressing
Delivers 3518N of force for pressing applications, where the exact bottoming position must be fine-tuned on the fly to avoid over-traveling or damaging components.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-75S the Right Cylinder?
Choose this 80 mm bore adjustable-stroke cylinder when your application requires 3518N of push force at 0.7 MPa and on-the-fly end-position tuning over a 625-700 mm window. If you need less force, stepping down to a 63 mm bore yields 2182N at the same pressure; if your setup demands more power, moving up to a 100 mm bore provides 5497N. Because the stroke is 700 mm, the 25 mm rod diameter and M20x1.5 rod thread will still experience leverage forces on long unsupported loads, so an external guide rail is highly recommended to prevent side-load damage.
Select the adjustable SAIJ over a fixed-stroke SAI when you need to accommodate product changeovers or fine-tune machine setup without adding external stopper blocks. To replace this cylinder per ISO 15552 dimensions, match the 80 mm bore, 700 mm stroke, 75 mm adjustment, PT G3/8 port, and -S magnet. Note that for load-holding without live air, you must look to the SAIL air-released lock or BSAI clamp-lock variants, as the SAIJ adjuster is only a travel stop. The mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ80BX700-75S FAQ
At 0.7 MPa operating pressure, this 80 mm bore cylinder provides a push force of 3518N and a pull force of 2268N. It can deliver a maximum push force of 4523N at 0.9 MPa.
The rear adjusting screw acts as a mechanical stopper that can shorten the effective stroke by up to 75 mm. This creates a usable travel window of 625 to 700 mm, allowing you to fine-tune the end position during commissioning without replacing the cylinder.
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