Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 800mm 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
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-30
The AirTAC SAIJ80X800-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 800 mm travel that can be fine-tuned backward by up to 30 mm, yielding a usable 770-800 mm end-position window. Delivering 4523N of push force at 0.9 MPa, it suits heavy-duty positioning tasks.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and uses a PT tapered port thread. The extruded aluminum barrel includes dual sensor grooves, and the rear stopper allows machine changeovers without adding external physical stops or swapping the entire cylinder.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 800 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 SAIJ80BX800-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×800 | 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 SAIJ80BX800-30 Is Used
Product Size Changeover
Dial in the exact 770-800 mm retract position when switching conveyor line formats, avoiding the need to physically swap out long-stroke actuators.
Long-Travel Fine Tuning
Trim the effective stroke by up to 30 mm during machine commissioning to perfectly time the end-of-stroke deceleration for heavy 4523N loads.
Corrosive Environment Handling
Leverage the SUS304 stainless steel rod for pushing or pulling tasks in washdown or mildly corrosive industrial settings requiring precise stops.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-30 the Right Cylinder?
Choose this 80 mm bore when your application requires substantial thrust, stepping up from the 63 mm bore which provides 2805N of push force at 0.9 MPa. The adjustable stroke is highly beneficial for dialing in exact end-of-travel limits during product size changeovers. Because the 800 mm stroke is long, always use an external guide rail to prevent side-load damage to the rod and M20x1.5 thread.
For load-holding without live air pressure, note that this rear adjuster acts only as a travel stop and does not function as a brake. You would need an external pilot-operated check valve or a related AirTAC lock cylinder like the BSAI for true clamping. This SAIJ model uses the reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets.
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 SAIJ80BX800-30 FAQ
At an operating pressure of 0.9 MPa, this 80 mm bore cylinder provides a push force of 4523N and a pull force of 3681N. The maximum allowable pressure is 1.0 MPa.
The rear adjuster screw lets you shorten the 800 mm nominal stroke by up to 30 mm, creating a 770-800 mm travel window. It acts purely as a mechanical stop for end-position tuning and does not lock or hold the load without continuous air pressure.
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