Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-30S 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 SAIJ80BX50-30S
The AirTAC SAIJ80X50-30-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 50 mm travel back by up to 30 mm, creating a precise 20-50 mm usable window for exact end-position tuning. Delivering 2513 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for superior corrosion resistance and is equipped with a magnet for solid-state DMSE or reed CMSE position sensing. The extruded aluminum barrel includes sensor grooves on both sides for straightforward switch mounting.
This adjustable-stroke design eliminates the need to swap cylinders or add external stops during machine setup and product changeovers. The rear adjuster acts purely as a mechanical stop to set the travel end and does not hold the load without live air pressure. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-30S |
|---|---|
| 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 SAIJ80BX50-30S
| 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 SAIJ80BX50-30S Is Used
Variable End-Stop Positioning
Dial in the exact 20-50 mm travel window during machine commissioning to accommodate varying material thicknesses without physically swapping out the cylinder.
Rapid Product Changeover
Quickly adjust the retract end-position on automated lines when switching between different product sizes, minimizing downtime and avoiding external stop hardware.
Corrosion-Resistant Actuation
Leverage the SUS304 stainless steel rod in manufacturing environments requiring high force and reliable DMSE/CMSE sensor feedback alongside moisture resistance.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX50-30S the Right Cylinder?
Choose this 80 mm bore when an application requires substantial thrust—stepping down to a 63 mm bore drops the push force to 1559 N at 0.5 MPa, while stepping up to a 100 mm bore yields 3927 N. The adjustable stroke is ideal for commissioning fine-tunes or accommodating variable product sizes on a line, rather than relying on a fixed-stroke SAI cylinder. Because the rear adjuster only acts as a travel stop and the air cushions handle deceleration, neither will hold a load without continuous air pressure; for true load-holding, consider an external rod lock, the SAIL series, or the BSAI clamp-lock. Ensure your ISO 15552 replacement matches the 80 mm bore, 50 mm stroke, 30 mm adjustment, PT tapered ports, and the -S magnet requirement.
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 SAIJ80BX50-30S FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the 50 mm nominal stroke by up to 30 mm, providing a usable travel window of 20-50 mm. It sets the end position but does not lock or hold the load without live air pressure.
At 0.5 MPa operating pressure, it provides 2513 N of push force and 2268 N of pull force. At 0.9 MPa, the push force increases to 4523 N.
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