Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-40 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 SAIJ80AX800-40
The AirTAC SAIJ80X800-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers a robust 2513N push force at 0.5 MPa and provides a 760-800mm usable travel window, allowing you to dial back the 800mm nominal stroke by up to 40mm during commissioning.
This unit includes a SUS420J2 stainless steel rod for superior wear resistance and utilizes PT tapered port threads. It features variable air cushions at both ends and carries a 30-800mm/s speed range, ensuring reliable performance across demanding industrial setups.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-40 |
|---|---|
| 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 SAIJ80AX800-40
| 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 SAIJ80AX800-40 Is Used
Product Size Changeovers
Dial in the 760-800mm travel window during line changeovers to accommodate different product lengths without mechanical rebuilds.
Extended Transfer Positioning
Acts as a high-thrust stop or diverter on long conveyor lines, using the 2513N push force to move heavy goods reliably.
Commissioning End-Stop Tuning
Fine-tune the exact retract position during machine setup, absorbing mechanical tolerances directly via the rear adjuster screw.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-40 the Right Cylinder?
Choose this 80mm bore when your application requires higher thrust than a 63mm cylinder (1559N at 0.5 MPa) but less than a 100mm bore (3927N at 0.5 MPa). The 40mm rear adjuster is perfect for fine-tuning end positions on product changeovers without swapping cylinders or adding external stops. It uses the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the nominal stroke is 800mm, an external guide is recommended to prevent excessive rod side-load.
To replace an ISO 15552 cylinder, match the 80mm bore, 800mm stroke, 40mm adjustment, PT G3/8 port, and your required mounting. Note that the rear adjuster acts only as a travel stop; it does not hold the load without live air. For load-holding without pressure, consider the SAIL or BSAI series.
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 SAIJ80AX800-40 FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. It can reach up to 4523N push force at 0.9 MPa.
The rear adjuster screw lets you shorten the 800mm nominal stroke by up to 40mm, creating a 760-800mm usable travel window. It acts as a physical stop to decelerate the load and set the end position, but it is not a lock and will not hold the load without live air pressure.
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