Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 750mm 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
- Stroke750 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-20
The AirTAC SAIJ80X750-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 730-750 mm usable travel window. Delivering 2513 N of push force at 0.5 MPa, it handles demanding positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides, and the SUS304 stainless steel rod provides excellent corrosion resistance for harsh environments.
This model uses a PT tapered port thread and supports speeds of 30-800 mm/s. The rear screw acts as a mechanical stop to fine-tune the retract end position during commissioning without adding external stops. It accepts AirTAC CMSE reed and DMSE electronic sensors, though this specific SKU is configured without a magnet.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 750 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 SAIJ80BX750-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×750 | 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 SAIJ80BX750-20 Is Used
Product Size Changeover
Dial in the 730-750 mm travel window during production line changeovers to accommodate different package lengths without replacing the cylinder.
Machine Setup Tuning
Fine-tune the retract end position at commissioning using the rear stopper, ensuring precise alignment without machining external stops.
Extended Reach Diverting
Utilize the 750 mm stroke to push heavy loads across wide conveyor lanes, relying on the 2513 N force to move items reliably.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-20 the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore (982 N push at 0.5 MPa) lacks thrust or a 100 mm bore (3927 N) is excessive. The 20 mm adjustment range is ideal for product-size changeovers, allowing operators to dial in the exact end-stop rather than swapping a fixed-stroke SAI cylinder. Because the stroke is 750 mm, an external guide is recommended to manage side loading on the extended rod.
To match this ISO 15552 dimensionally interchangeable cylinder, specify an 80 mm bore, 750 mm stroke, 20 mm adjustment, PT port, and SUS304 (B) rod material. Note that the rear adjuster is a travel stop, not a lock; for load-holding without live air, select an SAIL or BSAI cylinder. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, omitting FB, CA, CB, and CR.
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 SAIJ80BX750-20 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 allows you to shorten the effective stroke by up to 20 mm, creating a 730-750 mm travel window. It functions as a mechanical stop for end-position tuning and does not lock the load without live air pressure.
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