Airtac SAIJ80 Adjustable Cylinder SAIJ80AX70-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX70-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 70mm 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
- Stroke70 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX70-30S
The AirTAC SAIJ80X70-30-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a usable travel window of 40 to 70 mm. Delivering 2513 N of push force at 0.5 MPa, it provides robust actuation for mid-range pneumatic tasks. The extruded aluminum barrel includes sensor grooves on both sides, and this configuration includes a magnet for position detection.
This specific SKU is built with a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and uses PT tapered port threads. The rear adjuster acts purely as a mechanical stop to fine-tune the end position without swapping components, but it does not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX70-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX70-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 70 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 SAIJ80AX70-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×70 | 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 SAIJ80AX70-30S Is Used
Variable End-Stop Tuning
Dial in the exact 40-70 mm travel window during machine setup to accommodate varying material thicknesses without changing the cylinder.
Product Size Changeover
Quickly adjust the retract end-position on packaging lines when switching between different product sizes, minimizing downtime.
Precision Clamping Force
Leverage the 2513 N push force at 0.5 MPa to securely clamp workpieces while fine-tuning the clamping depth via the rear screw.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX70-30S the Right Cylinder?
Selecting this 80 mm bore model over a smaller 63 mm option steps the push force up from 1559 N to 2513 N at 0.5 MPa, which is critical when heavier payloads require reliable momentum. The 30 mm adjustment range is ideal for product changeovers, letting you dial in the exact end-stop during commissioning rather than machining custom spacers for a fixed-stroke SAI cylinder. When matching ISO 15552 replacements, verify the 80 mm bore, 70 mm stroke, PT G3/8 port, and the -S magnet requirement.
With a 25 mm rod diameter and M20x1.5 rod thread, this cylinder handles higher side loads than smaller bores, but any application with long unsupported strokes still requires an external guide to prevent binding. It supports a mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR variants.
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 SAIJ80AX70-30S FAQ
The rear adjusting screw acts as a mechanical stopper that allows you to shorten the effective stroke by up to 30 mm, providing a usable travel window of 40 to 70 mm. The adjuster only sets the travel end and does not lock or hold the load without live air pressure.
At 0.5 MPa operating pressure, the SAIJ80X70-30-S provides 2513 N of push force and 2268 N of pull force. At the maximum operating pressure of 1.0 MPa, the push force reaches 513 kgf.
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