Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 900mm 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
- Stroke900 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-40
The AirTAC SAIJ80X900-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window down to 860-900 mm. Delivering a robust 2513 N push force at 0.5 MPa, it is built for demanding positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This specific SKU uses a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and features PT tapered port threads. The rear stopper screw lets you dial in the exact end position during commissioning without adding external stops, though it acts only as a travel limiter and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 900 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 SAIJ80AX900-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×900 | 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 SAIJ80AX900-40 Is Used
Variable End-Stop Machining
Dial in the 860-900 mm travel window to accommodate different part lengths on a machining line without physically swapping cylinders.
Product Changeover Systems
Quickly adjust the rear stopper during product size transitions on a conveyor to maintain precise indexing positions.
Long-Stroke Assembly Presses
Utilize the 2513 N thrust at 0.5 MPa for long-travel pressing operations, fine-tuning the final end position at commissioning.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-40 the Right Cylinder?
Choose this 80 mm bore when your application requires substantial thrust—stepping down to a 63 mm bore yields 1559 N at 0.5 MPa, which may be insufficient for heavier payloads. The 900 mm stroke pushes the limits of standard strokes, meaning an external guide is highly recommended to prevent rod side-loading and premature wear.
An adjustable stroke is preferred over a fixed SAI cylinder when you need variable end-stops for machine changeovers. To replace this ISO 15552 cylinder, match the 80 mm bore, 900 mm stroke, 40 mm adjustment, PT G3/8 port, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting. Note that this unit lacks a magnet; for position feedback you would need an -S variant with CMSE reed or DMSE electronic 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 SAIJ80AX900-40 FAQ
It provides 2513 N of push force and 2268 N of pull force at 0.5 MPa, with an operating speed range of 30-800 mm/s.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 900 mm nominal stroke by up to 40 mm, creating an 860-900 mm usable travel window. It only limits travel and does not lock the load without air pressure.
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