Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 800mm 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
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-75
The AirTAC SAIJ80X800-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 800 mm travel but incorporates a 75 mm external stopper screw, creating a usable 725-800 mm adjustment window for precise end-position tuning during commissioning. Delivering 4523 N of push force at 0.9 MPa, it handles heavy loads with ease.
This model features a SUS420J2 stainless steel rod for enhanced corrosion resistance and utilizes PT tapered port threads (G3/8). The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. As an adjustable variant, it omits certain mounts, offering Basic, FA, LB, TC, FTC, TCM1, and TCM2 interfaces.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 800 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 SAIJ80AX800-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×800 | 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 SAIJ80AX800-75 Is Used
Product Changeover Tuning
Dial in the exact end-of-stroke position within the 725-800 mm window during production line format changes, avoiding the need to physically swap out long-stroke actuators.
Long-Travel Diverting
Provides robust 4523 N push force to deflect heavy pallets or products on a conveyor, with the rear stopper allowing fine-tuning of the diverting distance.
Heavy Assembly Pressing
Delivers reliable double-acting thrust for pressing components, where the 75 mm adjustment range compensates for varying part heights and tooling stack-up tolerances.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-75 the Right Cylinder?
Choose this 80 mm bore cylinder when an application requires substantial thrust—stepping up from a 63 mm bore gives you 4523 N push force at 0.9 MPa compared to 2805 N, while stepping down to a 50 mm bore drops output to 1767 N. The 75 mm rear adjuster is selected over a fixed SAI stroke when a machine requires variable end-stops to accommodate product changeovers without physically swapping cylinders or adding external stops.
Because the nominal stroke is 800 mm, the 25 mm rod and M20x1.5 thread must be guided externally to prevent excessive side-loading and premature seal wear. Remember that the rear adjuster is a travel stop, not a locking device; this double-acting cylinder will not hold its load without live air pressure. For true load-holding, consider the SAIL or BSAI series. Replacement match: 80 mm bore, 800 mm stroke, 75 mm adjust, PT G3/8 ports, no magnet.
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 SAIJ80AX800-75 FAQ
It features an external stopper screw at the rear that mechanically limits the piston's retract travel. You can adjust the effective stroke anywhere between 725 mm and 800 mm. The adjuster acts as a hard stop and does not lock the load in place without continuous air pressure.
At 0.9 MPa operating pressure, the SAIJ80X800-75 provides 4523 N of push force and 4071 N of pull force. It operates at speeds between 30 and 800 mm/s.
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