Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-100
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-100 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 SAIJ80BX550-100
The AirTAC SAIJ80X550-100 is a double-acting ISO 15552 profile cylinder featuring a rear mechanical stopper that allows you to trim the nominal 550 mm stroke back by up to 100 mm. This yields a highly versatile 450-550 mm usable travel window, enabling precise end-position tuning at commissioning without swapping out the barrel or adding external stops. Delivering a robust 2513 N of push force at 0.5 MPa, it handles substantial actuation loads with ease.
This specific configuration utilizes a SUS304 stainless steel rod (material code B) for superior corrosion resistance, paired with PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. Because the stroke exceeds 300 mm, the 25 mm rod diameter and M20x1.5 rod thread provide strong rigidity, though an external guide is recommended to manage side loading on the extended rod.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-100 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-100 |
|---|---|
| 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 SAIJ80BX550-100
| 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 SAIJ80BX550-100 Is Used
Variable End-Stop Positioning
Ideal for machining fixtures where the exact clamping depth of a 550 mm stroke must be fine-tuned within a 100 mm window to accommodate different part thicknesses without mechanical rebuilds.
Product Changeover Diverter
Perfect for conveyor diverting arms that need to adjust their reach by up to 100 mm to handle varying package sizes, allowing rapid setup changes directly at the machine HMI.
Long-Stroke Assembly Press
Provides reliable 2513 N push force for assembly stations requiring a long 450-550 mm travel, where the rear stopper precisely dials in the final pressing position.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-100 the Right Cylinder?
Select this 80 mm bore actuator when your application requires a 450-550 mm travel window and demands more thrust than the 63 mm bore option (which provides 1559 N push at 0.5 MPa). If your force requirements are lower, stepping down to a 63 mm bore saves space and air consumption. The 100 mm adjustment range is particularly valuable for product changeovers on automated lines, allowing operators to dial in the exact end-stop without changing the cylinder.
For ISO 15552 mounting interchangeability, this SAIJ model supports a reduced footprint set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Note that the rear adjuster acts solely as a travel stop to set deceleration alongside the variable air cushions at both ends; it is not a lock. If your application requires true load-holding without live air pressure, consider the AirTAC SAIL (air-released lock) or BSAI (clamp-lock) series instead.
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 SAIJ80BX550-100 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. If operated at 0.7 MPa, the push force increases to 3518 N.
The rear external adjusting screw acts as a mechanical stop, allowing you to shorten the effective travel from the nominal 550 mm down to as little as 450 mm. This creates a 450-550 mm usable window for fine-tuning the end position at commissioning without replacing the cylinder.
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