Airtac SAIJ80 Adjustable Cylinder SAIJ80BX85-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX85-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 85mm 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
- Stroke85 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX85-75
The AirTAC SAIJ80X85-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 10 to 85 mm, allowing you to dial back the nominal 85 mm stroke by up to 75 mm during commissioning. This bore delivers a robust 4523N push force at 0.9 MPa.
Equipped with a SUS304 stainless steel rod and PT tapered port threads, it is built for demanding environments. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU omits the magnet, so external sensing or a variant with a magnet would be required for CMSE or DMSE switches.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX85-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX85-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 85 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 SAIJ80BX85-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×85 | 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 SAIJ80BX85-75 Is Used
Variable End-Stop Tuning
Dial in the exact 10 to 85 mm travel distance during machine commissioning to accommodate changing product dimensions without swapping cylinders.
Product Changeover
Quickly adjust the retract stop on a packaging line to handle different package lengths, reducing downtime between production runs.
Machine Setup
Fine-tune the final end position of a 4523N thrust motion at assembly stations, avoiding the need to bolt on custom external spacers.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX85-75 the Right Cylinder?
Choose this 80 mm bore when your application requires high thrust but variable end-of-stroke positioning, such as accommodating different product sizes on a single line without adding external mechanical stops. If you need less force, stepping down to a 63 mm bore yields 2805N at 0.9 MPa, while a 100 mm bore offers 7068N for heavier loads.
The rear adjuster acts solely as a travel stop and does not hold the load without live air pressure; for fail-safe load holding, consider the SAIL or BSAI series. This SAIJ model uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. For ISO 15552 replacement matching, verify the 85 mm stroke, 75 mm adjustment, PT port, and basic mounting.
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 SAIJ80BX85-75 FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 75 mm from the nominal 85 mm, providing a usable travel window of 10 to 85 mm. It functions as a physical stop to fine-tune the retract position and does not lock the load without live air.
At an operating pressure of 0.9 MPa, the SAIJ80X85-75 generates a push force of 4523N and a pull force of 3681N. It operates at speeds between 30 and 800 mm/s.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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