Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-75S 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 SAIJ80AX85-75S
The AirTAC SAIJ80X85-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features an 80 mm bore delivering 2513 N of pull force at 0.5 MPa, paired with a PT tapered G3/8 port. Because of the 75 mm adjustment code, you can fine-tune the effective travel anywhere within a 10-85 mm usable window without swapping the barrel.
This unit includes a magnet for position sensing (-S) and uses an SUS420J2 stainless steel rod (code A) for improved corrosion resistance. The rear adjuster acts purely as a mechanical stop to set the retraction end-position; it does not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-75S |
|---|---|
| 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 SAIJ80AX85-75S
| 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 SAIJ80AX85-75S Is Used
Variable End-Position Tuning
Dial in the exact retract distance during machine commissioning, trimming the 85 mm nominal stroke back by up to 75 mm to perfectly align tooling.
Product-Size Changeover
Rapidly adapt a packaging or handling line to different package lengths by adjusting the cylinder's travel window instead of replacing hardware.
Adjustable Machine Setup
Use the rear stopper screw to set precise end-of-stroke limits on automated equipment, providing flexibility during initial prototyping and setup.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-75S the Right Cylinder?
Choose this adjustable-stroke model when your machine setup requires variable end-stops or product-size changeovers, avoiding the need to bolt on external stops or buy multiple fixed-stroke SAI cylinders. If you need less force, stepping down to a 63 mm bore yields 1402 N of pull force at 0.5 MPa. If your application requires position holding without continuous air pressure, note that this cylinder's adjuster and air cushions function only as travel stops, not as locks.
As a dimensionally interchangeable ISO 15552 profile cylinder, it uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. The integrated magnet works seamlessly with AirTAC CMSE reed and DMSE electronic solid-state sensors.
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 SAIJ80AX85-75S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of pull force and 3518 N of push force. At the maximum 1.0 MPa pressure, it delivers up to 513 kgf.
The rear adjuster screw lets you mechanically shorten the 85 mm nominal stroke, providing a usable travel window of 10 to 85 mm. The adjuster functions only as a travel stop and does not lock or hold the load without live air pressure.
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