This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X80-40, 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 SIJ80X80-40
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-40 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X80-40, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X80-40
- 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 SIJ80X80-40
The AirTAC SIJ80X80-40 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, giving a usable 40-80 mm window from the 80 mm nominal maximum. It features a 25 mm rod, M20x1.5 thread, 36 mm adjustable cushions, a G3/8 port, and 30-800 mm/s speed.
This SKU ships without a magnet (-S omitted), so it cannot accept a magnetic switch for position sensing. The direct replacement is the SAIJ80X80-40, retaining the ISO 15552 mounting interface, bore, force, and adjust window. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-40 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X80-40 |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAIJ80X80-40 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 SAIJ80X80-40 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 SIJ80X80-40
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×80 | 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 SIJ80X80-40 Is Used
Variable Press Stroke
Allows on-site extend tuning up to 40 mm to accommodate different material thicknesses in a pressing operation without changing the entire actuator.
Adjustable Diverter Arm
Fine-tunes the extend reach by up to 40 mm on-site to handle varying package widths on a sorting line, ensuring precise physical contact.
Calibrated Sealing Head
Dials in the exact extend end position for packaging film sealing jaws, providing a 40 to 80 mm usable window to perfect the crimp depth.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-40 with the SAIJ80X80-40
Choose the 40 mm adjust window if your process requires trimming the extend stroke down to a 40 mm minimum. Mounting options include FA, LB, and TC brackets. Because this SKU lacks the -S suffix, it cannot accept legacy CS1-B/DS1-B sensors. The external stop screw sets the end position but is not a lock; for load holding on air loss, use an external rod lock, pilot-operated check valve, or the SAIL/BSAI lock variant. For stroke lengths of 300 mm or more, verify side-load capacity to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X80-40
- ✓ 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 SIJ80X80-40 FAQ
Yes, the SIJ80X80-40 is discontinued. The direct replacement is the SAIJ80X80-40. It shares the identical ISO 15552 interface, 80 mm bore, 80 mm nominal stroke, 40 mm adjust window, G3/8 port, and mounting options. The SAIJ family also features an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The external stop screw provides a 40 mm adjust window, meaning the usable extend stroke can be trimmed on-site from the 80 mm maximum down to 40 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X80-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X80-40 replacement — usually within 7-8 hours.