Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 550mm 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
- Stroke550 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-40S
The AirTAC SAIJ80X550-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 510 to 550 mm. Delivering 2513 N of pull force at 0.5 MPa, it is built with a SUS420J2 stainless steel rod and PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE reed and DMSE electronic switches.
This adjustable-stroke design allows technicians to fine-tune the retract end position during commissioning without adding external stops. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure. With a 25 mm rod and M20x1.5 thread, it handles high side loads, though the 550 mm stroke requires an external guide to prevent rod deflection.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 550 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 SAIJ80AX550-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×550 | 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 SAIJ80AX550-40S Is Used
Variable End-Stop Tuning
Dial in the retract position precisely during machine commissioning, trimming up to 40 mm off the 550 mm stroke without bolting on external physical stops.
Product Size Changeover
Quickly adapt a packaging line for different package lengths by adjusting the rear screw, shifting the effective travel between 510 and 550 mm.
Long-Stroke Assembly Press
Leverage the 2513 N pull force for assembly operations while using the external guide required for 550 mm strokes to prevent rod deflection.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-40S the Right Cylinder?
Choose this 80 mm bore when you need more thrust than the 63 mm bore (which provides 1402 N pull at 0.5 MPa) but want to avoid the larger footprint of a 100 mm cylinder. The 40 mm adjustment range is ideal for product changeovers on a line, letting you dial in the exact end-stop on the fly rather than swapping a fixed-stroke SAI cylinder. The mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
For load-holding without continuous air pressure, this standard SAIJ adjuster will not function as a lock; you should specify a SAIL pneumatic lock or BSAI clamp-lock cylinder instead. To match this ISO 15552 replacement exactly, confirm the 80 mm bore, 550 mm stroke, 40 mm adjuster, PT G3/8 port, and the -S magnet option.
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 SAIJ80AX550-40S FAQ
At a 0.5 MPa operating pressure, this 80 mm bore cylinder generates 2513 N of push force and 2268 N of pull force. It can deliver up to 3518 N of push force at 0.7 MPa.
The rear adjuster screw lets you shorten the 550 mm nominal stroke by up to 40 mm, providing a 510 to 550 mm usable travel window. The adjuster is a mechanical stop for end-position tuning and does not lock the load without live air.
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