This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X900-40S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-40S
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 900mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X900-40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke900 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X900-40S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-40S
The AirTAC SIJ80X900-40S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued. An external stop screw lets you trim the extend stroke by up to 40mm on-site, giving a usable extend range of 860-900mm. The stop sets the end position and is not a load lock.
The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure. For load holding on air loss, use an external rod lock or SAIL/BSAI variant, as cushions only decelerate.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-40S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X900-40S |
| 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 standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ80X900-40S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / 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 | |
The SAIJ80X900-40S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×900 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-40S Is Used
Press Fit Tuning
Trimming the extend stroke by up to 40mm on-site allows exact press depth adjustment for bearing insertion without swapping cylinders.
Variable Transfer Stops
Adjusting the extend end position dynamically accommodates different package sizes on a 900mm transfer line.
Pallet Positioning
Fine-tuning the 860-900mm extend window ensures precise pallet alignment before stretch wrapping, adapting to pallet variations.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-40S with the SAIJ80X900-40S
To replace the discontinued SIJ80X900-40S, order the direct replacement SAIJ80X900-40S. Reusing your ISO 15552 mounting (FA, LB, or TC) avoids machine redesign. The 40mm adjust window is ideal for precise end-position tuning without custom machining. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches. Because the 900mm stroke increases rod bending risks, ensure external guides handle side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X900-40S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-40S FAQ
Yes, the SIJ80X900-40S is discontinued. The direct replacement is the SAIJ80X900-40S. The SAIJ upgrade features a two Y-shaped one-way piston seal for longer life.
The external stop screw provides a 40mm trim window, making the usable extend stroke 860-900mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X900-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X900-40S replacement — usually within 7-8 hours.