Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 155mm 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
- Stroke155 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-40S
The AirTAC SAIJ80X155-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 115-155 mm from its 155 mm nominal stroke. Fitted with a carbon steel piston rod and PT tapered port threads, it delivers a robust 4523N of push force at 0.9 MPa. The integrated -S magnet enables precise position detection using AirTAC CMSE reed or DMSE electronic solid-state sensors mounted in the dual-sided extruded aluminum barrel grooves.
This adjustable-stroke model allows you to fine-tune the retract end-position at commissioning or during product changeovers without physically swapping the cylinder or adding external mechanical stops. It features a 25 mm rod and M20x1.5 rod thread, offering high rigidity against side loads. The mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 accessories, omitting the FB, CA, CB, and CR brackets found on some standard variants.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 155 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 SAIJ80X155-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×155 | 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 SAIJ80X155-40S Is Used
Machine Changeover
Dial in the 115-155 mm travel window during product size changeovers to set new retract end-stops without replacing the cylinder.
End-Position Tuning
Fine-tune the final retract position during machine commissioning to absorb mechanical tolerances and achieve exact positioning.
Variable Stops
Adjust the stroke on packaging lines to handle different carton sizes, using the rear screw to set the exact required travel distance.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-40S the Right Cylinder?
Choose this 80 mm bore variant when your application requires substantial thrust—such as 3518N at 0.7 MPa—exceeding the 1374N push force of the 50 mm bore, but without stepping up to the larger 100 mm body. The 40 mm adjustment range is ideal for machinery requiring variable end-stops to accommodate multiple product sizes on a single line. Because the stroke is 155 mm, which is below the 300 mm threshold, side-load risks are moderate, though an external guide remains recommended for heavy lateral loads. Remember that the rear adjuster functions strictly as a travel stop and does not lock the load; for true fail-safe position holding without live air pressure, consider the AirTAC SAIL pneumatic lock or BSAI clamp-lock series. As a dimensionally interchangeable ISO 15552 cylinder, it matches standard bore, stroke, port, and mounting footprints for seamless machine integration.
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 SAIJ80X155-40S FAQ
At 0.9 MPa, this 80 mm bore double-acting cylinder provides a push force of 4523N and a pull force of 4071N. At 0.5 MPa, it delivers 2513N push and 2268N pull.
The rear adjuster acts as an external stopper that trims the retract stroke by up to 40 mm, creating a usable travel window between 115 mm and 155 mm. It only sets the end position and does not hold the load without live air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.