Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX85-40S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke85 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-40S
The AirTAC SAIJ80X85-40-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. The built-in rear stopper allows you to trim the nominal 85 mm stroke back by up to 40 mm, creating a precise 45 to 85 mm usable travel window for fine-tuning during commissioning.
This model includes a magnetic piston (-S) for direct compatibility with AirTAC CMSE reed and DMSE electronic solid-state sensors, which seat neatly into the dual sensor grooves on the extruded aluminum barrel. It uses a G3/8 PT tapered port and achieves a standard speed range of 30-800 mm/s. The adjuster functions strictly as a travel stop for end-position tuning, not as a lock, meaning live air is required to maintain the load.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-40S |
|---|---|
| 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-40S
| 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 SAIJ80AX85-40S Is Used
Product Changeover
Dial in the 45-85 mm travel window on the fly to accommodate varying package sizes on a packaging line without changing out the cylinder.
End-Stop Calibration
Fine-tune the retraction end position during machine commissioning to perfectly seat components without adding external mechanical stops.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-40S the Right Cylinder?
The adjustable 45-85 mm window is ideal for machine setups requiring variable end-stops or product-size changeovers, eliminating the need to physically swap cylinders or bolt on external stops as you would with a fixed-stroke SAI model.
For an exact ISO 15552 replacement, match the 80 mm bore, 85 mm stroke, 40 mm adjustment, G3/8 PT port, and -S magnet. The available mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Because the stroke is under 300 mm, side-load stress is minimal, though external guides should still be used for heavy lateral loads. If true load-holding without live air pressure is needed, consider the SAIL or BSAI series instead of relying on the rear stopper.
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 SAIJ80AX85-40S FAQ
At 0.7 MPa, the push force increases to 3518 N.
The rear adjusting screw acts as a mechanical stop that allows you to shorten the effective stroke by up to 40 mm. This turns the nominal 85 mm stroke into a 45 to 85 mm adjustable travel window. It only sets the end position and does not lock the load.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.