Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-30 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 SAIJ80BX750-30
The AirTAC SAIJ80X750-30 is a double-acting ISO 15552 profile cylinder featuring a 80mm bore and a 750mm stroke, equipped with a rear adjuster screw that allows you to trim the effective travel by up to 30mm. This creates a highly useful 720-750mm usable stroke window, enabling precise end-position tuning at commissioning without swapping out the unit. It delivers a robust 2513N of push force at 0.5 MPa and uses a G3/8 port for pneumatic supply.
This specific configuration features a SUS304 stainless steel rod (code B) for superior corrosion resistance and includes PT tapered port threads. Because the 750mm stroke is long, the 25mm rod diameter should be paired with an external guide to handle side loads and prevent premature wear. The extruded aluminum barrel includes sensor grooves on both sides, and while this unit lacks a magnet, adding one enables compatibility with CMSE reed and DMSE solid-state sensors.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-30 |
|---|---|
| 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 SAIJ80BX750-30
| 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 SAIJ80BX750-30 Is Used
Machine Changeover
Dial in the 720-750mm travel window during product size changeovers to set new end stops without replacing the cylinder or adding external stopper blocks.
Long-Stroke Diverting
Use the 80mm bore's 2513N push force to divert heavy pallets on a conveyor, relying on the rear screw to fine-tune the exact diverting position.
Assembly Press Tuning
Adjust the effective stroke on the fly during assembly commissioning to ensure perfect contact pressure, avoiding the need to machine custom spacers.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX750-30 the Right Cylinder?
Select this 80mm bore cylinder when your application requires substantial force (2513N push or 2268N pull at 0.5 MPa) and exact end-positioning flexibility. The 30mm adjustment range is perfect for machine changeovers or accommodating slight product size variations on a line. If you need less force, stepping down to a 63mm bore yields 1559N; if you need more, a 100mm bore provides 3927N.
Remember that the rear adjuster functions strictly as a travel stop to set deceleration, not as a mechanical lock. This SAIJ cylinder cannot hold a load without live air pressure; for true fail-safe load holding, consider the SAIL pneumatic lock or BSAI clamp-lock variants. It maintains ISO 15552 mounting interchangeability and supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2 (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 SAIJ80BX750-30 FAQ
At a standard 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 750mm nominal stroke by up to 30mm, providing a usable travel window of 720-750mm. It is a travel stop for fine-tuning end positions, not a lock, and cannot hold the load without continuous air pressure.
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