Airtac SAIJ80 Adjustable Cylinder SAIJ80BX40-40
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX40-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 40mm 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
- Stroke40 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 SAIJ80BX40-40
The AirTAC SAIJ80X40-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 40 mm travel back by up to 40 mm. This creates a highly versatile 0 to 40 mm usable window, letting you dial in the exact end position during commissioning without swapping hardware.
The rear adjuster functions purely as a travel stop to set the retract end position, meaning it cannot hold the load without live air pressure. For applications requiring true load-holding without continuous pressure, you must look to the SAIL lock or BSAI clamp-lock variants. This cylinder omits the FB, CA, CB, and CR mounts, utilizing a focused mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2 to simplify machine integration.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX40-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX40-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 40 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 SAIJ80BX40-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×40 | 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 SAIJ80BX40-40 Is Used
Product Changeovers
Quickly fine-tune the retract stop from 0 to 40 mm to accommodate different product sizes on a single production line without changing cylinders.
Machine Setup
Dial in the exact end-of-stroke position during initial commissioning to perfect alignment and avoid adding external mechanical stops.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX40-40 the Right Cylinder?
The adjustable stroke is ideal for product changeovers on a line where the required extension distance varies, saving the cost of mounting entirely new cylinders. Since the stroke here is 40 mm, external side-load guides are generally unnecessary, but the robust 25 mm rod and M20x1.5 thread handle moderate side loads well.
To match this ISO 15552 cylinder for a replacement, specify an 80 mm bore, 40 mm stroke, up to 40 mm adjustment, PT port thread, SUS304 (B) rod material, no magnet, and the appropriate mounting bracket from the SAIJ subset. Remember that the variable air cushions at both ends manage deceleration, but only live air pressure maintains the load position.
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 SAIJ80BX40-40 FAQ
At the maximum pressure of 1.0 MPa, the push force reaches 4523 N.
The rear adjusting screw acts as a mechanical stop that lets you shorten the 40 mm nominal stroke by up to 40 mm, creating a 0 to 40 mm usable travel window. It sets the end position but 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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