This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X80-100S, 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.

The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X80-100S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 80mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X80-100S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ100X80-100S 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 100 mm on-site, yielding a usable 0-80 mm extend window from the 80 mm nominal maximum. This 100 mm bore features a G1/2 port, M20x1.5 rod thread, and 36 mm adjustable air cushions. The direct replacement is the SAIJ100X80-100S, retaining the same mounting interface, bore, and force.
The SAIJ successor incorporates an upgraded two-piece Y-shaped piston seal for lower start-up pressure and extended life. The stop screw sets the end position but is not a lock; loads drift without live air, so use an external rod lock or SAIL/BSAI variant for holding. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B sensors.
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X80-100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X80-100S |
| Bore size | Ø100 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| 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 SAIJ100X80-100S 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 | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAIJ100X80-100S 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). |
|---|---|
| 100 | 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).
Allows on-site extend stroke tuning up to 100 mm to alter part ejection pitch without swapping cylinders.
Fine-tunes the gate extension depth on-site to accommodate changing package widths on the fly.
Trims the extend stroke to adapt the stopping position for different pallet heights entering a workstation.
To replace the discontinued SIJ100X80-100S, order the direct replacement SAIJ100X80-100S, which preserves the G1/2 port, M20x1.5 rod, and ISO 15552 mounting dimensions. Select the -100 mm adjust window when your application requires trimming the 80 mm nominal extend stroke down to a precise shorter length on-site. Mounting options include Basic, FA, LB, and TC brackets. The -S suffix includes a piston magnet for legacy CS1-B/DS1-B switches; the SAIJ replacement uses current AirTAC switches. For strokes of 300 mm or longer, verify side-load limits to prevent excessive guide wear.
Replacement checklist
Yes, the SIJ100X80-100S is discontinued. The direct replacement is the SAIJ100X80-100S. It shares the identical ISO 15552 interface, 100 mm bore, 80 mm stroke, 100 mm adjust window, G1/2 port, and mounting options. The SAIJ family also adds an upgraded piston seal and new lock variants.
The external stop screw window is 100 mm, allowing you to trim the 80 mm nominal extend stroke down to 0 mm on-site. 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 SAIJ100X80-100S replacement — usually within 7-8 hours.