Airtac SAIJ80 Adjustable Cylinder SAIJ80BX185-40
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX185-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 185mm 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
- Stroke185 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 SAIJ80BX185-40
The AirTAC SAIJ80X185-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. By turning the rear stopper screw, you can trim the effective travel by up to 40 mm, creating a precise 145-185 mm usable window for exact end-position tuning at commissioning.
This unit features a SUS304 stainless steel rod for superior corrosion resistance and uses an extruded aluminum barrel with sensor grooves on both sides. The rear adjuster acts purely as a travel stop to set deceleration, not as a load lock, meaning live air is required to hold position. It supports standard AirTAC CMSE and DMSE sensors, though no magnet is installed on this specific configuration.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX185-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX185-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 185 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 SAIJ80BX185-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×185 | 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 SAIJ80BX185-40 Is Used
Product Changeovers
Dial in the 145-185 mm travel window during format changes on packaging lines, using the rear screw to set new end positions rapidly without mechanical rebuilds.
Machine Setup
Fine-tune the final clamping position of a 2513N press during commissioning, absorbing mechanical tolerances directly via the cylinder's integrated stopper.
Variable End Stops
Adjust the retract distance on an assembly station to accommodate different part heights, relying on the 40 mm trim range instead of external hard stops.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX185-40 the Right Cylinder?
The 40 mm adjustment range is ideal for product changeovers on a line, allowing you to shift the end-stop without swapping the cylinder or adding external stops. If your process demands load-holding without continuous air pressure, consider an AirTAC SAIL or BSAI cylinder instead.
For an exact ISO 15552 replacement, match the 80 mm bore, 185 mm nominal stroke, 40 mm adjustment, PT port thread, and your required mounting hardware. Available mounts include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Since the 185 mm stroke is relatively short, side-load stress is minimal, but ensure the SUS304 rod is properly aligned to maximize seal life.
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 SAIJ80BX185-40 FAQ
The rear stopper screw allows you to shorten the 185 mm nominal stroke by up to 40 mm, providing an effective travel window of 145 to 185 mm. This mechanism acts as a travel stop and does not lock the load without live air pressure.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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