Airtac SAIJ80 Adjustable Cylinder SAIJ80AX45-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX45-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 45mm 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
- Stroke45 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX45-20
The AirTAC SAIJ80X45-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 2513N push force at 0.5 MPa and uses a G3/8 port. The integrated rear stopper allows you to fine-tune the effective travel down from the 45mm nominal stroke, yielding a precise 25-45mm usable window during commissioning without adding external stops.
This variant features a SUS420J2 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, ready for AirTAC CMSE reed or DMSE solid-state switches if a magnet is added later. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX45-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX45-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 45 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 SAIJ80AX45-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×45 | 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 SAIJ80AX45-20 Is Used
End-Position Tuning
Dial in the exact 25 to 45mm travel distance during machine commissioning to accommodate varying material thicknesses without swapping cylinders.
Product Changeover
Quickly adjust the retract stop on packaging lines when switching between different product sizes, ensuring precise repeatable positioning.
Machining Clamps
Use the 2513N push force to secure workpieces, making micro-adjustments to the clamping reach to avoid over-travel and fixture damage.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX45-20 the Right Cylinder?
Choose this 80mm bore when an application requires 2513N of push force at 0.5 MPa, stepping up from a 63mm bore that delivers 1559N. The 20mm rear adjuster is selected over a fixed SAI cylinder when a machine requires variable end-stops for quick product changeovers. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true fail-safe locking, consider the SAIL or BSAI series.
For this 45mm stroke, the 25mm piston rod provides excellent rigidity and handles side loads well. When matching ISO 15552 replacement dimensions, verify the 80mm bore, 45mm stroke, 20mm adjustment range, PT G3/8 port, and the specific mounting accessory required.
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 SAIJ80AX45-20 FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. It can deliver up to 4523N push force at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 45mm nominal stroke by up to 20mm. This creates a usable travel window of 25 to 45mm, allowing fine-tuning of the end position without external stops.
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