Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-50S 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 SAIJ80AX550-50S
The AirTAC SAIJ80X550-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 550 mm stroke that can be dialed back by up to 50 mm, giving you a 500-550 mm usable travel window for precise end-position tuning during commissioning. Delivering 4523 N of push force at 0.9 MPa, it handles substantial loads with a 25 mm carbon steel piston rod and M20x1.5 rod thread.
This variant features an SUS420J2 stainless steel rod (code A) for corrosion resistance and includes a magnet (-S) for position sensing with AirTAC CMSE reed or DMSE electronic switches. The extruded aluminum barrel incorporates sensor grooves on both sides, and the adjustable stopper acts solely as a travel end deceleration device, not a load-holding lock.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-50S |
|---|---|
| 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 SAIJ80AX550-50S
| 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 SAIJ80AX550-50S Is Used
Machine Setup & Commissioning
Fine-tune the 500-550 mm travel window during initial machine build to perfectly dial in the end-of-stroke position without machining external stopper blocks.
Product Size Changeover
Quickly adjust the retract end-stop by up to 50 mm when running a new product length on a packaging or handling line, minimizing changeover downtime.
Long-Stroke Assembly Press
Utilize the 4523 N push force and 550 mm travel to lower heavy fixtures, using the rear screw to set the exact lower end-position for pressing components.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-50S the Right Cylinder?
Choose this 80 mm bore when an application requires 4523 N of thrust at 0.9 MPa, bridging the gap between the 63 mm bore (2805 N) and the 100 mm bore (7068 N). The 50 mm adjustment range is ideal for product-size changeovers on a line, allowing you to shift the end stop without swapping the cylinder or adding external stops. For fixed-travel needs without commissioning adjustments, the standard SAI cylinder is a simpler alternative.
When ordering, specify the PT tapered port thread, the SUS420J2 stainless steel rod, and the -S magnet. Mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the stroke is 550 mm, the extended 25 mm rod is subject to bending under lateral stress; an external guide rail is strongly recommended to prevent side-load damage. Note that the rear adjuster and air cushions do not hold the load without live air—use an external rod lock or a SAIL cylinder for fail-safe holding.
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 SAIJ80AX550-50S FAQ
At 0.9 MPa, this 80 mm bore cylinder provides 4523 N of push force and 2268 N of pull force. It operates at speeds between 30 and 800 mm/s, supported by 36 mm air cushions at both ends.
The rear adjuster screw allows you to shorten the effective stroke from the nominal 550 mm down to as little as 500 mm. This stopper fine-tunes the retract end position but does not mechanically lock the load without continuous air pressure.
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