Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 50mm 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
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-40
The AirTAC SAIJ80X50-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 50 mm stroke that can be dialed back by up to 40 mm, yielding a highly versatile 10 to 50 mm usable travel window. Delivering 2513 N of push force at 0.5 MPa, it handles demanding actuation tasks with precision.
This configuration utilizes a SUS304 stainless steel piston rod for superior corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes dual sensor grooves, allowing you to add CMSE reed or DMSE electronic switches if position feedback is later required.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 50 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 SAIJ80BX50-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×50 | 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 SAIJ80BX50-40 Is Used
Changeover Optimization
Dial in the exact 10 to 50 mm end-position during product size changeovers without swapping out the entire actuator or adding external shims.
Press Fit Calibration
Leverage the 2513 N push force at 0.5 MPa for seating components, using the rear screw to fine-tune the insertion depth precisely at commissioning.
Corrosive Assembly Lines
The SUS304 stainless steel rod makes this adjustable profile cylinder well-suited for manufacturing environments where moisture or mild chemicals are present.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-40 the Right Cylinder?
Choose this 80 mm bore when an application requires substantial thrust that a 50 mm bore (982 N push at 0.5 MPa) cannot provide, but without stepping up to the heavier 100 mm bore. The 40 mm adjustment range is ideal for prototyping or production lines needing rapid end-stop tuning during product changeovers, replacing the need for fixed SAI cylinders. For load-holding without continuous air pressure, this adjuster acts solely as a travel stop, so you must integrate a SAIL pneumatic lock or external rod lock.
To match this ISO 15552 interchangeable cylinder, specify an 80 mm bore, 50 mm stroke, 40 mm adjustment, PT ports, and SUS304 (B) rod material. It supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, deliberately omitting FB, CA, CB, and CR options.
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 SAIJ80BX50-40 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 3518 N.
The nominal stroke is 50 mm, but the rear adjuster allows you to trim the travel by up to 40 mm. This creates an adjustable 10 to 50 mm effective stroke window for precise end-position tuning.
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