Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 900mm 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
- Stroke900 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-40S
The AirTAC SAIJ80X900-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 4523N of push force at 0.9 MPa and features a 900mm nominal stroke that can be fine-tuned down by up to 40mm, creating a precise 860-900mm usable travel window. This built-in adjustability allows operators to dial in end positions during commissioning or product changeovers without adding external stops.
This unit includes a magnet for position sensing and uses an SUS420J2 stainless steel rod for enhanced durability against moisture. It features PT tapered G3/8 ports and operates at speeds of 30-800mm/s. The rear stopper sets the travel end and relies on the air cushion for deceleration, but it does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 900 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 SAIJ80AX900-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×900 | 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 SAIJ80AX900-40S Is Used
Product Size Changeovers
Quickly reconfigure the 860-900mm stroke window on packaging lines handling varying box lengths without replacing the entire actuator.
End-Position Tuning
Fine-tune the retract stop during machine commissioning to achieve exact positioning, absorbing mechanical tolerances without external shims.
Extended Transfer Diversion
Drive long-travel diverters or pushers on a conveyor, using the 4523N force at 0.9 MPa to move heavy loads reliably across the 900mm span.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-40S the Right Cylinder?
Select this 80mm bore cylinder when an application requires high thrust combined with variable end-stop positioning. If you need less force, stepping down to a 63mm bore yields 2805N of push force at 0.9 MPa, while a 100mm bore provides 7068N for heavier loads. Because the 900mm stroke is quite long, an external guide is strongly recommended to prevent excessive side-loading on the SUS420J2 rod.
The adjustable stroke is ideal for production lines running multiple product sizes, allowing rapid changeovers instead of physically swapping cylinders. If your process requires true load-holding without continuous air pressure, a plain SAIJ stopper is insufficient; you should specify an AirTAC SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead. This SAIJ80X900-40-S is dimensionally interchangeable per ISO 15552 and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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 SAIJ80AX900-40S FAQ
At an operating pressure of 0.9 MPa, this 80mm bore cylinder provides a push force of 4523N and a pull force of 4071N. At 0.5 MPa, the push force is 2513N.
The rear adjuster acts as a mechanical stop that trims the effective travel back by up to 40mm, providing a usable stroke window of 860-900mm. It works with the air cushion to set deceleration but does not lock the load without live air pressure.
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