Airtac SAIJ80 Adjustable Cylinder SAIJ80AX35-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX35-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 35mm 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
- Stroke35 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX35-20
The AirTAC SAIJ80X35-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers 2513N of push force and 2268N of pull force at 0.5 MPa, utilizing a 25mm carbon steel rod. The integrated rear stopper allows you to trim the nominal 35mm stroke back by up to 20mm, creating a precise 15-35mm usable travel window for exact end-position tuning.
This variant uses SUS420J2 stainless steel for the rod (material code A) and PT tapered port threads. It supports speeds of 30-800mm/s and includes variable air cushions at both ends. The extruded aluminum barrel features sensor grooves on both sides for mounting CMSE reed or DMSE electronic sensors if needed later.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX35-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX35-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 35 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 SAIJ80AX35-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×35 | 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 SAIJ80AX35-20 Is Used
Press Stroke Calibration
Dial in the exact 15-35mm travel window during machine commissioning to accommodate varying material thicknesses without external stop blocks.
Product Changeover
Quickly adjust the retract end-position on packaging lines when switching to a different product size, saving setup time.
End-Stop Trimming
Fine-tune the final approach distance on assembly stations to absorb mechanical tolerances and ensure precise component placement.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX35-20 the Right Cylinder?
Choose this 80mm bore when an application requires over 2200N of thrust at 0.5MPa but does not justify stepping up to a 100mm bore that provides 3927N. The 20mm adjustment range is ideal for machine setup and product changeover, allowing you to fine-tune the end stop without swapping the cylinder or adding external stops. Unlike a fixed SAI cylinder, this adjustable version absorbs mechanical tolerance variations during commissioning.
For ISO 15552 interchangeability, match the 80mm bore, 35mm nominal stroke, 20mm adjustment, G3/8 PT ports, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding, consider an SAIL or BSAI cylinder. Because the 35mm stroke is short, side-load risks are minimal, but always ensure axial load alignment.
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 SAIJ80AX35-20 FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 513 kgf.
The rear adjuster screw allows you to shorten the nominal 35mm stroke by up to 20mm, resulting in a 15-35mm usable travel window. It acts as a mechanical stop to fine-tune the end position and does not lock or hold the load without continuous air pressure.
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