Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-30S 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 SAIJ80BX700-30S
The AirTAC SAIJ80X700-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 2513N of push thrust at 0.5 MPa and features a G3/8 port. The built-in magnet supports position sensing via CMSE reed or DMSE electronic switches. Because the stroke is 700 mm, the rear adjuster lets you dial the effective travel back by up to 30 mm, creating a precise 670-700 mm usable window without adding external stops.
This unit uses a SUS304 stainless steel rod for superior corrosion resistance and carries an extruded aluminum barrel with sensor grooves on both sides. The mounting set is a reduced subset of the standard SAI series—Basic, FA, LB, TC, FTC, TCM1, and TCM2—omitting the FB, CA, CB, and CR options. The 25 mm rod and M20x1.5 thread provide robust load handling, though the 700 mm length requires external guiding to prevent side-load damage.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-30S |
|---|---|
| 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 SAIJ80BX700-30S
| 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 SAIJ80BX700-30S Is Used
Machine Changeover
Dial in the 670-700 mm retract stop during product size changes without physically swapping the cylinder or repositioning external hard stops.
Long-Stroke Diverting
Actuates long-travel sorting gates on a conveyor, using the rear adjuster to fine-tune the exact resting position of the diverter arm.
Assembly Press Positioning
Sets precise end-of-stroke contact points for long-travel pressing operations, relying on the SUS304 rod for corrosion resistance.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-30S the Right Cylinder?
Select this 80 mm bore cylinder when an application requires 2513N push force at 0.5 MPa (or 3518N at 0.7 MPa) alongside a long 700 mm stroke. If you need less force, stepping down to a 63 mm bore yields 1559N; if your load requires more, a 100 mm bore provides 3927N. The adjustable stroke is chosen over a fixed SAI when you need to fine-tune the retract end position during commissioning or product changeover.
For a 700 mm stroke, you must use an external guide to support the load and prevent excessive side loading on the rod. Remember that the rear adjuster and the variable air cushions at both ends only decelerate the load; they do not hold it without live air. For true load-holding, use an external rod lock, a pilot-operated check valve, or AirTAC SAIL and BSAI clamp-lock cylinders. To match this ISO 15552 replacement, specify: 80 mm bore, 700 mm stroke, 30 mm adjustment, PT tapered port threads, and the -S magnet option.
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 SAIJ80BX700-30S FAQ
At 0.5 MPa it provides 2513N of push thrust and 2268N of pull thrust. At 0.7 MPa, push thrust increases to 3518N. The operational speed range for this 80 mm bore cylinder is 30-800 mm/s.
The rear adjusting screw acts as a mechanical stop that shortens the effective travel. For this model, you can trim the nominal 700 mm stroke back by up to 30 mm, resulting in a usable travel window of 670-700 mm. The adjuster only sets the end position; it does not lock the load without live air pressure.
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