This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X450-100S, 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 SIJ80X450-100S
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-100S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 450mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X450-100S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke450 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X450-100S
- 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 SIJ80X450-100S
The AirTAC SIJ80X450-100S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 450 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 100 mm on-site, yielding a usable 350-450 mm window. The 80 mm bore uses a G3/8 port, a Ø25 mm rod, and 36 mm adjustable cushions.
Because SIJ is end-of-life, the direct replacement is the SAIJ80X450-100S, retaining the same interface, force, and adjustability. The SAIJ upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and longer life. Note the stop screw sets end position only; it is not a load lock, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-100S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X450-100S |
| Bore size | Ø80 mm |
| Stroke | 450 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 SAIJ80X450-100S 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 SAIJ80X450-100S 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 SIJ80X450-100S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×450 | 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 SIJ80X450-100S Is Used
Variable Stroke Clamping
Ideal for clamping stations where the material thickness varies, letting operators trim the extend stroke by up to 100 mm on-site without changing the cylinder.
Adjustable Diverting Arm
Provides a diverter on a packaging line that can be fine-tuned between 350 mm and 450 mm to accommodate different box sizes on the fly.
Tiered Height Positioning
Used in low-rise lifting fixtures where the exact end position must be dialed in per pallet tier, utilizing the external stop screw for precise field tuning.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-100S with the SAIJ80X450-100S
To replace the discontinued SIJ80X450-100S, order the direct replacement SAIJ80X450-100S, which preserves the 80 mm bore, 450 mm stroke, 100 mm adjust window, G3/8 port, and -S magnet. Choose the 100 mm adjust window if your field tuning requires shortening the extend stroke by up to 100 mm (usable 350-450 mm). Mounting options include Basic, FA, LB, and TC. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches (the SAIJ uses current AirTAC switches). Because the 450 mm stroke is long, account for rod-bending and side-load forces by using external guides to prevent premature seal wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X450-100S
- ✓ 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 SIJ80X450-100S FAQ
Yes, the SIJ80X450-100S is discontinued. The direct replacement is the SAIJ80X450-100S. It shares the identical ISO 15552 interface, 80 mm bore, 450 mm stroke, 100 mm adjust window, G3/8 port, and mounting options, while adding an upgraded two-piece Y-shaped piston seal.
The external stop screw allows you to trim the extend stroke by up to 100 mm on-site, giving a usable window of 350-450 mm. The stop sets end position only and does not lock the load.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X450-100S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X450-100S replacement — usually within 7-8 hours.