This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X500-100, 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 SIJ100X500-100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 500mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X500-100, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ100X500-100 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. Its external stop screw lets you trim the extend stroke by up to 100 mm on-site, giving a usable 400-500 mm extension out of the 500 mm nominal maximum.
Because SIJ is end-of-life, the direct replacement is the SAIJ100X500-100, preserving the ISO 15552 mounting interface, force, and adjust window. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note this SKU lacks a -S magnet, so it cannot take a switch; the stop sets end position but is not a load lock.
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X500-100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X500-100 |
| Bore size | Ø100 mm |
| Stroke | 500 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 SAIJ100X500-100 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 SAIJ100X500-100 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. |
| ×500 | 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 operators to fine-tune the extend position on-site by up to 100 mm for pressing assemblies of varying heights without re-mounting the cylinder.
Accommodates changing package dimensions on a packaging line by trimming the extend stroke to actuate diverter arms at precise distances.
Ideal for pushing loads into bins of different depths, using the external stop to safely set the exact extension limit on the factory floor.
To replace the discontinued SIJ100X500-100, specify SAIJ100X500-100 for an direct. Choose the 100 mm adjust window if you need to trim the 500 mm extend stroke down to 400 mm on-site. Reuse FA, LB, or TC mounts via the ISO 15552 interface. As this is a non-magnetized SKU, it cannot accept legacy CS1-B/DS1-B sensors. For the 500 mm stroke, use external guides to prevent rod bending under side-load. Remember the stop screw sets end position only; for load holding on air loss, use an external rod lock or SAIL/BSAI variant.
Replacement checklist
Yes, the SIJ100X500-100 is discontinued. The direct replacement is the SAIJ100X500-100, matching the 100 mm bore, 500 mm stroke, 100 mm adjust window, G1/2 port, and ISO 15552 mounting interface.
The external stop screw provides a 100 mm adjust window, allowing the 500 mm extend stroke to be shortened to 400 mm. The stop sets position only and is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X500-100 replacement — usually within 7-8 hours.