This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X80-10, 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.

The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-10 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X80-10, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ80X80-10 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder. This discontinued unit is fully replaced by the direct replacement SAIJ80X80-10, retaining the G3/8 port, M20x1.5 rod, and 36mm cushions. An external stop screw lets you trim the extend stroke by up to 10mm on-site, yielding a 70-80mm usable window from the 80mm nominal maximum. The stop sets end position; it is not a load lock.
The SAIJ successor adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure. This non-magnet SKU cannot take a switch; for held loads use SAIL/BSAI or an external rod lock.
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-10 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X80-10 |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAIJ80X80-10 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAIJ80X80-10 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×80 | 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).
Trimming the extend stroke by up to 10mm on-site allows operators to dial in the exact insertion depth for bearing press fits without machining custom spacers.
Adjusting the extend endpoint precisely sets the conveyor divertor gate angle on-site, accommodating varying package widths on the production line.
Fine-tuning the down-stroke by up to 10mm ensures the sealing head contacts cartons perfectly, compensating for minor material thickness variations.
To replace the SIJ80X80-10, order the direct replacement SAIJ80X80-10 to reuse your ISO 15552 FA, LB, or TC mounts. The 10mm adjust window is ideal for fine-tuning the extend endpoint without shims. This base model lacks the -S magnet, so it cannot accept legacy CS1-B/DS1-B sensors. Because the 80mm stroke is under 300mm, side-load rod deflection is minimal. Remember that a plain cylinder drifts on air loss; the cushion only decelerates, so use an external rod lock for load holding.
Replacement checklist
Yes, the SIJ80X80-10 is discontinued.
The external stop screw provides a 10mm on-site stroke-trim window, allowing a usable extend stroke of 70-80mm. The stop sets end position and is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X80-10 replacement — usually within 7-8 hours.