This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X80-100, 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 SIJ100X80-100 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 SAIJ100X80-100, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ100X80-100 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 stroke from the 80 mm nominal maximum.
The direct replacement is the SAIJ100X80-100, reusing your ISO 15552 mounting interface without bracket changes. The SAIJ upgrade features a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note this SKU lacks a -S magnet and cannot take a switch; the stop sets position but is not a load lock.
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X80-100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X80-100 |
| 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 SAIJ100X80-100 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 SAIJ100X80-100 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).
Dialing in a delicate press fit that needs field stroke tuning to compensate for material thickness variance without swapping the actuator.
Acting as an adjustable hard stop for a conveyor diverter where the end position must be shortened on-site for different package sizes.
Extending an adjustable locating pin to catch varying pallet depths, trimming the extend stroke by up to 100 mm on-site.
To replace the discontinued SIJ100X80-100, order the direct replacement SAIJ100X80-100, which preserves the 80 mm stroke, 100 mm adjust window, G1/2 port, and FA/LB/TC mounting footprint. Choose the 100 mm adjust window when you need to dial the extend stroke down to zero on-site. Because this SKU has no -S suffix, it cannot accept a magnetic switch; add the -S magnet if you need legacy CS1-B/DS1-B sensor accuracy. For stroke lengths >=300 mm, verify your side-load limits to prevent guide failure. The external stop screw sets the end position but is not a lock; for held loads use SAIL/BSAI or an external rod lock.
Replacement checklist
Yes, the SIJ100X80-100 is discontinued. The direct replacement is the SAIJ100X80-100, which matches the 100 mm bore, 80 mm stroke, 100 mm adjust window, G1/2 port, and ISO 15552 mounting interface.
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 but is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X80-100 replacement — usually within 7-8 hours.