Airtac SAIJ80 Adjustable Cylinder SAIJ80BX105-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX105-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 105mm 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
- Stroke105 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX105-20S
The AirTAC SAIJ80X105-20-S is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, letting you dial back the nominal 105 mm travel to a precise 85-105 mm window. It delivers 3518 N of push force at 0.7 MPa and uses a PT tapered port. This variant features a SUS304 stainless steel piston rod for superior corrosion resistance.
Unlike a fixed-stroke SAI, this model lets you fine-tune the retract end-position at commissioning without adding external stops. The rear adjuster acts purely as a travel stop and does not hold the load without live air. It includes a magnet for position sensing and offers adjustable air cushions at both ends to manage deceleration.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX105-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX105-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 105 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 SAIJ80BX105-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×105 | 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 SAIJ80BX105-20S Is Used
Variable End-Position Tuning
Dial in the exact retract distance within the 85-105 mm window during commissioning to perfect machine timing without swapping cylinders.
Product Size Changeover
Quickly adapt automated line tooling to different product lengths by adjusting the rear stopper screw on the fly.
Corrosive Environment Actuation
The SUS304 stainless steel rod handles clamping and positioning tasks in washdown or chemically exposed manufacturing areas.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX105-20S the Right Cylinder?
Choose this 80 mm bore when 50 mm (1374 N push @ 0.7 MPa) is too weak and 100 mm (5497 N) is overkill. The adjustable 85-105 mm window is ideal for machine setups requiring variable end-stops during product changeovers. For load-holding without live pressure, use a SAIL or BSAI cylinder instead, as the SAIJ adjuster is not a lock. It is dimensionally interchangeable per ISO 15552 with a PT port, SUS304 rod, and -S magnet.
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 SAIJ80BX105-20S FAQ
At 0.7 MPa, this 80 mm bore cylinder provides 3518 N of push force and 2268 N of pull force. It can deliver up to 4523 N push at 0.9 MPa.
The rear adjuster screw lets you shorten the 105 mm nominal stroke by up to 20 mm, providing a usable travel window of 85-105 mm to fine-tune the end position.
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