Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 240mm 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
- Stroke240 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-40
The AirTAC SAIJ80X240-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to shorten the effective travel by up to 40 mm. This creates a highly flexible 200-240 mm usable stroke window, enabling precise end-position tuning at commissioning without swapping the barrel or adding external stops. Built with an extruded aluminum barrel housing sensor grooves on both sides, it delivers a robust 2513 N pull force at 0.5 MPa.
This model utilizes a SUS420J2 stainless steel rod for enhanced durability against moisture and minor side loads. The integrated variable air cushions at both ends manage end-of-stroke deceleration, while the rear PT tapered port ensures a reliable pneumatic seal. Remember that the rear adjuster acts purely as a travel stop to set the position; it does not lock or hold the load without continuous live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 240 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 SAIJ80AX240-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×240 | 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 SAIJ80AX240-40 Is Used
Machine Changeover
Dial in the 200-240 mm travel window during product-size changeovers to set new retract stops without physically swapping the cylinder.
End-Position Tuning
Fine-tune the retract end-position during initial commissioning to dial out mechanical interference or set exact stopping points.
Variable End Stops
Adjust the rear stopper on the fly for assembly lines processing multiple part lengths within the 40 mm adjustment range.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-40 the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore falls short on thrust (delivering only 825 N pull at 0.5 MPa) but you want to avoid stepping up to a 100 mm cylinder that pulls 3681 N. The 40 mm adjustment range is ideal for production lines needing variable end-stops during product-size changeovers, providing setup flexibility that a fixed-stroke SAI cannot match. For load-holding requirements without live air, this cylinder is not suitable; consider an AirTAC SAIL or BSAI series instead.
As a dimensionally interchangeable ISO 15552 cylinder, it matches standard mounting footprints using the Basic, FA, LB, TC, FTC, TCM1, and TCM2 accessory set (omitting FB, CA, CB, and CR). It operates at speeds of 30-800 mm/s. Because the 240 mm stroke is below the 300 mm threshold, external guide support is not explicitly mandated, though the 25 mm rod diameter helps manage standard side loading.
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 SAIJ80AX240-40 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of pull force and 3518 N of push force. At the maximum 1.0 MPa, it delivers up to 513 kgf.
The rear adjuster screw acts as a mechanical stop that lets you trim the effective travel back from the 240 mm nominal stroke, creating a 200-240 mm usable window. It sets the end position but does not lock or hold the load without live air pressure.
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 SAIJ80AX240-40
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.