This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X300-20S, 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 SIJ80X300-20S
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 300mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X300-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X300-20S
- 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 SIJ80X300-20S
The AirTAC SIJ80X300-20S 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, yielding a usable 280-300 mm stroke. The 80 mm bore features a Ø25 mm rod, M20x1.5 thread, G3/8 port, and 36 mm adjustable cushions. The direct replacement is the SAIJ80X300-20S, sharing the same interface, force, and mounting.
The SAIJ upgrade utilizes an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B sensors. The stop screw sets end position but is not a load lock; use SAIL or BSAI for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-20S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X300-20S |
| Bore size | Ø80 mm |
| Stroke | 300 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 SAIJ80X300-20S 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 SAIJ80X300-20S 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 SIJ80X300-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×300 | 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 SIJ80X300-20S Is Used
Variable Press Stroke
Trimming the extend stroke by up to 20 mm on-site allows precise positioning for pressing operations without changing the cylinder body.
Adjustable Diverter Arm
A 280-300 mm extend window lets operators fine-tune the diverter reach on the fly to accommodate varying package widths.
End-Stop Tuning
The external stop screw provides a hard mechanical end position for pallet stops, adjustable within a 20 mm window.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-20S with the SAIJ80X300-20S
To replace the discontinued SIJ80X300-20S, order the exact direct replacement SAIJ80X300-20S, retaining the 80 mm bore, 300 mm max stroke, 20 mm adjust window, G3/8 port, and -S magnet. Select the 20 mm adjust window only if you need on-site extend trimming from 280 to 300 mm. Mounting interfaces include Basic, FA, LB, and TC. Because the 300 mm stroke risks rod bending, ensure external guides to mitigate side-load. The stop screw sets end position and does not hold loads on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X300-20S
- ✓ 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 SIJ80X300-20S FAQ
Yes, the SIJ80X300-20S is discontinued. The direct replacement is the SAIJ80X300-20S, which shares the identical ISO 15552 interface, 80 mm bore, 300 mm stroke, 20 mm adjust window, G3/8 port, and mounting options. The SAIJ features an upgraded piston seal for longer life.
The theoretical max is 513 kgf at 1.0 MPa. The external stop screw window is 20 mm, allowing the extend stroke to be shortened from 300 mm down to 280 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X300-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X300-20S replacement — usually within 7-8 hours.