Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 80mm 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
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-75
The AirTAC SAIJ80X80-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 80 mm travel back by up to 75 mm. This creates a highly flexible 5 to 80 mm usable travel window, allowing precise end-position tuning at commissioning without swapping out the cylinder or adding external stops. In the 80 mm bore class, it delivers a robust 4523 N push force at 0.9 MPa, making it well-suited for heavy positioning tasks.
This variant is equipped with a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads (G3/8). The rear adjuster acts strictly as a mechanical stop to set the travel end and relies on the integrated air cushions for deceleration; it does not lock or hold the load without live air pressure. For load-holding requirements without continuous air, an external rod lock or related types like the SAIL or BSAI cylinders are required.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAIJ80BX80-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×80 | 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 SAIJ80BX80-75 Is Used
Machine Changeover
Dial in the exact end-stop position within the 5-80 mm window during product size changes on a packaging line, avoiding mechanical rebuilds.
Press Fit Tuning
Fine-tune the engagement depth of a 4523 N pressing operation at commissioning without needing to physically swap out the entire cylinder body.
Variable Diverting
Adjust the retract distance on a conveyor diverter arm to accommodate different carton widths quickly and accurately.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-75 the Right Cylinder?
Choose this 80 mm bore adjustable-stroke cylinder when your application requires high thrust (2513 N push at 0.5 MPa) combined with the ability to fine-tune the retract position on the fly. If your force requirements are lower, stepping down to a 63 mm bore yields 1559 N at 0.5 MPa, while stepping up to a 100 mm bore provides 3927 N. The adjustable stroke is ideal for machine setups and product changeovers where the exact end-stop needs slight calibration without installing a fixed-stroke SAI cylinder.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 80 mm stroke, 75 mm adjustment range, G3/8 PT ports, and the SUS304 rod material. Note that SAIJ supports a specific mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets. Since this is an 80 mm stroke, side-load risks are minimal, but always ensure the M20x1.5 rod thread is properly aligned to prevent binding.
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 SAIJ80BX80-75 FAQ
The SAIJ80X80-75 cylinder provides a push force of 2513 N at 0.5 MPa and 4523 N at 0.9 MPa. The pull force is 2268 N at 0.5 MPa and 4523 N at 0.9 MPa, with a maximum rated force of 513 kgf at 1.0 MPa.
The rear adjuster screw allows you to shorten the nominal 80 mm stroke by up to 75 mm, providing a usable travel window of 5 to 80 mm. The adjuster functions as a mechanical stop for end-position tuning and deceleration, but it does not lock or hold the load without live air pressure.
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