Airtac SAIJ80 Adjustable Cylinder SAIJ80BX45-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX45-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 45mm 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
- Stroke45 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX45-30S
The AirTAC SAIJ80X45-30-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers 2513N of push force at 0.5MPa and provides a usable travel window of 15-45mm, letting you fine-tune the retract end-position at commissioning without adding external stops.
This variant features a SUS304 stainless steel rod for corrosion resistance and includes a magnet for CMSE reed or DMSE electronic sensors. It uses a PT G3/8 port and offers variable air cushions at both ends to decelerate the load.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX45-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX45-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 45 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 SAIJ80BX45-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×45 | 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 SAIJ80BX45-30S Is Used
Product Changeover
Dial the stroke back from 45mm to 15mm during format changes on a packaging line, setting exact end positions without external stopper blocks.
End-Position Tuning
Fine-tune the retract stop during machine commissioning to absorb mechanical tolerances and ensure precise 80mm bore actuation.
Washdown Actuation
Leverage the SUS304 stainless steel rod for positioning tasks in food or moist environments where standard carbon steel rods would corrode.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX45-30S the Right Cylinder?
Choose this 80mm bore when a 50mm bore (982N push at 0.5MPa) lacks the power for your task but a 100mm bore (3927N) is excessive. The 30mm adjustment range is ideal for product changeovers, allowing you to dial back the 45mm stroke down to 15mm on the fly instead of swapping cylinders. It supports mounting options Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Because the rear adjuster acts only as a travel stop and the air cushions manage deceleration, this cylinder cannot hold a load without live air. For fail-safe load holding, consider an AirTAC SAIL or BSAI cylinder. The SUS304 rod and M20x1.5 thread handle side loads well, though any long unsupported stroke still requires an external guide.
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 SAIJ80BX45-30S FAQ
The rear adjuster screw lets you shorten the nominal 45mm stroke by up to 30mm, giving an adjustable travel window of 15-45mm. The adjuster acts as a mechanical stop to set the end position and does not lock the load without live air pressure.
At 0.5MPa operating pressure, it provides 2513N of push force and 2268N of pull force. At the maximum 1.0MPa pressure, it can deliver up to 513kgf of push force.
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