This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X90-20, 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 SIJ80X90-20
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X90-20 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 90mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X90-20, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke90 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X90-20
- 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 SIJ80X90-20
The AirTAC SIJ80X90-20 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 20 mm on-site, giving a usable 70-90 mm window from the 90 mm nominal maximum. The 80 mm bore uses a G3/8 port, a Ø25 mm rod, and 36 mm adjustable cushions. This SKU has no -S magnet and cannot accept a sensor.
The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The stop sets end position only; it is not a lock, so use an external rod lock for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X90-20 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X90-20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X90-20 |
| Bore size | Ø80 mm |
| Stroke | 90 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 SAIJ80X90-20 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 SAIJ80X90-20 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 SIJ80X90-20
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×90 | 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 SIJ80X90-20 Is Used
Variable Stroke Clamping
Adjusts the extend stop on-site for parts of varying heights, ensuring consistent 2513 N clamping force without re-plumbing the G3/8 air lines.
Transfer Pusher Tuning
Dials in the 70-90 mm extend window to deflect items accurately onto diverging conveyor lanes, using the external screw to fine-tune the end position.
Packaging Positioning
Trims the extend stroke by up to 20 mm to adapt to different carton depths on the fly, relying on the 36 mm cushions to decelerate the load smoothly.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X90-20 with the SAIJ80X90-20
To replace the discontinued SIJ80X90-20, order the SAIJ80X90-20 direct, reusing your FA, LB, or TC mounts. The 20 mm adjust window sets the extend end position (70-90 mm) but is not a load lock. Without a -S magnet, this SKU cannot take a switch. For any stroke over 300 mm, verify side-load limits to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X90-20
- ✓ 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 SIJ80X90-20 FAQ
Yes, the SIJ80X90-20 is discontinued. The direct replacement is the SAIJ80X90-20, which shares the identical ISO 15552 interface, 90 mm stroke, 20 mm adjust window, G3/8 port, and mounting. The SAIJ family also adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The external stop screw provides a 20 mm adjust window, allowing the extend stroke to be shortened from the 90 mm nominal maximum down to 70 mm. The stop sets end position only; it does not lock the load, so use an external rod lock for holding.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X90-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X90-20 replacement — usually within 7-8 hours.