This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X500-50, 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 SIJ80X500-50
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 500mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X500-50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke500 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X500-50
- 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 SIJ80X500-50
The AirTAC SIJ80X500-50 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder with an 80 mm bore and a 500 mm maximum extend stroke. An external stop screw lets you trim the extend stroke on-site by up to 50 mm, yielding a usable 450-500 mm window. The SIJ line is discontinued; the direct replacement is the SAIJ80X500-50, matching the interface, force, and adjust window.
The SAIJ successor retains the ISO 15552 mounting dimensions for direct reuse of FA, LB, and TC brackets, and upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Remember the stop screw sets end position only; it is not a load lock, and this non-magnetic SKU cannot accept a switch.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-50 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X500-50 |
| Bore size | Ø80 mm |
| Stroke | 500 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 SAIJ80X500-50 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 SAIJ80X500-50 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 SIJ80X500-50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×500 | 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 SIJ80X500-50 Is Used
Press Fit Tuning
Allows operators to trim the 500 mm extend stroke by up to 50 mm on-site to dial in exact press-fit depths without swapping cylinders.
Variable Transfer Stops
Adjusts the extend endpoint dynamically for different product lengths on a conveyor line, using the external stop screw to set the 450-500 mm window.
Adjustable Diverters
Fine-tunes diverter arm end positions in packaging zones where stroke endpoints require field adjustment to accommodate varied box sizes.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-50 with the SAIJ80X500-50
Choose the 50 mm adjust window if your end-position tuning falls within 450-500 mm. Mounting options include Basic, FA, LB, and TC. This model lacks the -S magnet, so it cannot use legacy CS1-B or DS1-B sensors. Because the 500 mm stroke is long, verify side-load limits and use external guides to prevent rod bending. The stop screw is not a lock; for load holding on air loss, use an external rod lock or the SAIL/BSAI variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X500-50
- ✓ 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 SIJ80X500-50 FAQ
Yes, the SIJ80X500-50 is discontinued. The direct replacement is the SAIJ80X500-50, which shares the same ISO 15552 interface, 80 mm bore, 500 mm stroke, 50 mm adjust window, and G3/8 port. The SAIJ family also features an upgraded piston seal for longer life.
The external stop screw provides a 50 mm adjust window, making the usable extend stroke 450-500 mm. Note that the stop sets end position and is not a load lock; use an external rod lock for held loads.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X500-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X500-50 replacement — usually within 7-8 hours.