This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X1000-40, 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 SIJ80X1000-40 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 1000mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X1000-40, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ80X1000-40 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 1000 mm nominal extend stroke. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, giving a usable window of 960-1000 mm. This 80 mm bore uses a G3/8 port, a 25 mm rod with an M20x1.5 thread, and 36 mm adjustable air cushions. The stop sets the end position but is not a load lock; without live air the piston drifts.
This SIJ model is discontinued; the direct replacement is the SAIJ80X1000-40, retaining the same interface, force, port, and mounting. The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life.
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X1000-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X1000-40 |
| Bore size | Ø80 mm |
| Stroke | 1000 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 SAIJ80X1000-40 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 SAIJ80X1000-40 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. |
| ×1000 | 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).
Tuning the 1000 mm extend by up to 40 mm on-site lets operators dial in the exact ejection point for varying part depths without changing the cylinder.
Trimming the extend stroke accommodates different package widths on a transfer line, ensuring items push cleanly to the next belt without repositioning stops.
The external stop screw provides a field-adjustable end position for diverter arms handling mixed pallet heights, setting the precise 960-1000 mm reach.
To replace the discontinued SIJ80X1000-40, order the direct replacement SAIJ80X1000-40, keeping the 1000 mm max stroke and 40 mm adjust window. Choose the 40 mm adjust window if you need on-site tuning between 960-1000 mm; for fixed stops, a standard SAI cylinder is simpler. Mounting reuses ISO 15552 FA, LB, or TC interfaces. This SKU lacks the -S magnet, so it cannot accept a magnetic switch. For the 1000 mm stroke, use an external guide to prevent rod bending and manage side loads.
Replacement checklist
Yes, the SIJ80X1000-40 is discontinued. The direct replacement is the SAIJ80X1000-40, which matches the ISO 15552 interface, 80 mm bore, 1000 mm stroke, 40 mm adjust window, G3/8 port, and mounting.
The external stop screw trims the extend stroke by up to 40 mm on-site (usable 960-1000 mm). The stop sets end position only; it is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X1000-40 replacement — usually within 7-8 hours.