Airtac SAIJ80 Adjustable Cylinder SAIJ80AX185-40
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX185-40 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 SAIJ80AX185-40
The AirTAC SAIJ80X185-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the nominal 185 mm travel by up to 40 mm, creating a precise 145-185 mm usable window. This mechanism is ideal for fine-tuning end positions at commissioning without swapping out the component or adding external stops. It delivers robust thrust, pushing with 4523 N and pulling with 2268 N at 0.9 MPa.
Built with a SUS420J2 stainless steel rod for enhanced durability against lateral stress, this 80 mm bore unit uses PT tapered G3/8 ports. The extruded aluminum barrel incorporates sensor grooves on both sides for flexible mounting of CMSE or DMSE switches. Remember that the rear adjuster acts purely as a travel stop to set the end position, not as a lock, so it will not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX185-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX185-40 |
|---|---|
| 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 SAIJ80AX185-40
| 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 SAIJ80AX185-40 Is Used
Machine Setup Calibration
Dial in the exact 145-185 mm end position during commissioning without machining new hard stops or changing the cylinder.
Product Size Changeovers
Quickly adapt the stroke length on packaging lines when switching between different product sizes.
Variable End-Stop Positioning
Use the 40 mm adjustment range to fine-tune the retract end position for precise pressing or clamping tasks.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX185-40 the Right Cylinder?
An adjustable stroke is selected over a fixed SAI cylinder when you need variable end-stops for product changeovers or setup refinement. For load-holding without continuous air pressure, you would need a SAIL or BSAI cylinder, as the SAIJ adjuster is only a stop.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 185 mm stroke, 40 mm adjustment range, PT G3/8 ports, and the SUS420J2 rod material. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2. Since the 185 mm stroke is under 300 mm, side-load concerns are minimal, but the 25 mm rod diameter still handles lateral forces well.
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 SAIJ80AX185-40 FAQ
It reaches a maximum push force of 513 kgf at 1.0 MPa.
The rear adjuster screw allows you to shorten the 185 mm nominal stroke by up to 40 mm, providing a usable travel window of 145-185 mm. The adjuster acts as a mechanical stop to set the end position and does not lock the load without live air.
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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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