This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X20-10, 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X20-10 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 20mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X20-10, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ100X20-10 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 10 mm on-site, yielding a usable 10-20 mm extension from the 20 mm nominal maximum. The 100 mm bore features a G1/2 port, M20x1.5 rod thread, and 36 mm adjustable cushions.
Because this SIJ model is end-of-life, the direct replacement is the SAIJ100X20-10, retaining the same ISO 15552 mounting interface, force, and adjust window. The SAIJ upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and longer life. Note this SKU lacks a magnet (-S) and cannot accept sensing switches.
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X20-10 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X20-10 |
| Bore size | Ø100 mm |
| Stroke | 20 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 SAIJ100X20-10 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 | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAIJ100X20-10 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). |
|---|---|
| 100 | Bore size in mm. |
| ×20 | 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).
Provides field-tunable 10-20 mm clamping extension for machined parts, allowing operators to dial in the exact 10 mm trim needed for varied workpiece thicknesses without changing fixtures.
Controls a divertor arm on a packaging line where the 10 mm on-site stroke adjustment compensates for product size changes, ensuring precise routing without repositioning the entire actuator assembly.
Ejects components from storage bins using a short 10-20 mm stroke, with the external stop screw allowing rapid length reduction to prevent crushing fragile items during transfer.
To replace the discontinued SIJ100X20-10, order the direct replacement SAIJ100X20-10, matching the 100 mm bore, 20 mm nominal stroke, and 10 mm adjust window. Reuse your existing FA, LB, or TC ISO 15552 mounts. Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors. The external stop screw sets the end position but is not a lock; for load holding on air loss, use an external rod lock or SAIL/BSAI variant. Since the 20 mm stroke is under 300 mm, side-load rod deflection is minimal.
Replacement checklist
Yes, the SIJ100X20-10 is discontinued. The direct replacement is the SAIJ100X20-10, which shares the identical ISO 15552 interface, 100 mm bore, 20 mm stroke, 10 mm adjust window, and G1/2 port. The SAIJ family also adds an upgraded two-piece Y-shaped piston seal for longer life.
The external stop screw window is 10 mm, allowing you to trim the 20 mm nominal extend stroke down to a 10 mm minimum 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 SAIJ100X20-10 replacement — usually within 7-8 hours.