This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X350-40, 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 SIJ80X350-40
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-40 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 350mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X350-40, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X350-40
- 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 SIJ80X350-40
The AirTAC SIJ80X350-40 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 310-350 mm window from the 350 mm nominal maximum.
The direct replacement is the SAIJ80X350-40, retaining the ISO 15552 mounting interface, force, and porting. The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The stop screw sets end position only; it is not a load lock.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-40 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X350-40 |
| Bore size | Ø80 mm |
| Stroke | 350 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 SAIJ80X350-40 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 SAIJ80X350-40 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 SIJ80X350-40
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×350 | 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 SIJ80X350-40 Is Used
Variable Depth Forming
Adjusting the 40 mm extend window on-site lets operators fine-tune press depth for different material thicknesses without changing the entire cylinder setup.
Adjustable Transfer Stops
Trimming the extend stroke by up to 40 mm accommodates varying package sizes on a packaging line, allowing quick reconfiguration of end-stop positions.
Tiered Pallet Positioning
The 310-350 mm adjustable stroke provides flexibility to engage pallets at slightly different heights or entry points before actuating the transfer mechanism.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-40 with the SAIJ80X350-40
To replace the discontinued SIJ80X350-40, order the exact direct replacement SAIJ80X350-40, ensuring you keep the 40 mm adjust window for on-site extend tuning from 350 mm down to 310 mm. Reuse your existing FA, LB, or TC ISO 15552 mounts. This SKU lacks the -S magnet and cannot take a magnetic switch. Because the 350 mm stroke exceeds 300 mm, verify side-load limits and use external guides to prevent rod bending. The stop screw only sets the end position; for load holding on air loss, use an external rod lock or pilot-operated check valve, or specify the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X350-40
- ✓ 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 SIJ80X350-40 FAQ
Yes, the SIJ80X350-40 is discontinued. The SAIJ family also upgrades the piston seal to a two Y-shaped one-way element design.
The external stop screw provides a 40 mm trim window, allowing the extend stroke to be shortened from the 350 mm nominal maximum down to 310 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X350-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X350-40 replacement — usually within 7-8 hours.