This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X500-75, 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 SIJ80X500-75
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-75 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 SAIJ80X500-75, 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 → SAIJ80X500-75
- 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 SIJ80X500-75
The AirTAC SIJ80X500-75 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 75 mm on-site, giving a usable 425-500 mm window from the 500 mm nominal maximum. The stop sets the end position; it is not a load lock.
The direct replacement is the SAIJ80X500-75, matching the interface, force, and mounting. The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU has no -S magnet and cannot take a switch.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-75 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X500-75 |
| 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 SAIJ80X500-75 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 SAIJ80X500-75 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 SIJ80X500-75
| 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 SIJ80X500-75 Is Used
Variable Depth Forming
Adjusts the extend stroke on-site to press materials to varying depths without swapping cylinders.
Adjustable Transfer Stops
Tunes the extend length on packaging lines to handle changing box sizes on the fly.
Variable Height Indexing
Trims the extend position to index pallets of differing heights accurately.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-75 with the SAIJ80X500-75
To replace the discontinued SIJ80X500-75, specify the SAIJ80X500-75 direct. Choose the 75 mm adjust window if you need field stroke tuning between 425-500 mm. Mounting reuses ISO 15552 interface dimensions (Basic, FA, LB, TC). Because this SKU lacks the -S magnet, it cannot accept a switch. For the 500 mm long stroke, account for side-load and rod-bending by using external guides. The stop screw sets end position but is not a lock; for held loads use an external rod lock or pilot-operated check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X500-75
- ✓ 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 SIJ80X500-75 FAQ
Yes, the SIJ80X500-75 is discontinued. The direct replacement is the SAIJ80X500-75, sharing the same ISO 15552 interface, 80 mm bore, 500 mm stroke, 75 mm adjust window, G3/8 port, and mounting.
The external stop screw window is 75 mm, allowing an extend stroke of 425-500 mm. The G3/8 port and 36 mm cushions are fixed.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X500-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X500-75 replacement — usually within 7-8 hours.