Airtac SAIJ80 Adjustable Cylinder SAIJ80AX70-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX70-40S 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 SAIJ80AX70-40S
The AirTAC SAIJ80X70-40-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 2513 N of push force at 0.5 MPa and provides a usable travel window of 30 to 70 mm, allowing you to trim the nominal 70 mm stroke by up to 40 mm during machine commissioning. Equipped with a -S magnet, it integrates seamlessly with AirTAC CMSE reed and DMSE electronic sensors housed in the dual-side barrel grooves.
This unit uses a SUS420J2 stainless steel rod (option A) and a robust M20x1.5 rod thread to handle high side loads. The rear adjuster acts purely as a mechanical stop to fine-tune end positions without adding external stops, but it does not lock the load. For true load-holding without live air pressure, consider the SAIL or BSAI series instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX70-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX70-40S |
|---|---|
| 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 SAIJ80AX70-40S
| 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 SAIJ80AX70-40S Is Used
Machine Changeover
Dial in the 30-70 mm travel window during product size changes without physically swapping out the actuator.
Variable End Stops
Use the rear stopper to fine-tune the retract position precisely during initial commissioning or setup.
Clamp Positioning
Adjust the clamping depth on the fly to accommodate varying material thicknesses on the assembly line.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX70-40S the Right Cylinder?
Choose this 80 mm bore when an application demands higher thrust than the 50 mm class (982 N at 0.5 MPa) but requires precise end-position tuning. The 40 mm adjustment window is ideal for product changeovers, letting you dial in the exact 30-70 mm travel without swapping cylinders. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. When replacing an ISO 15552 unit, match the 80 mm bore, 70 mm stroke, 40 mm adjuster, PT port thread, and -S magnet.
Because the stroke is short, rod side-load risks are minimal, but always guide external loads for smooth operation. The PT tapered ports ensure tight pneumatic connections at the G3/8 interface.
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 SAIJ80AX70-40S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. It can reach up to 513 kgf at 1.0 MPa.
The rear mechanical stopper allows you to shorten the nominal 70 mm stroke by up to 40 mm, creating a 30 to 70 mm usable travel window. It functions as a travel stop and does not hold the load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ80 Adjustable Cylinder SAIJ80AX70-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.