This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X600-40, 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X600-40 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 600mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X600-40, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ100X600-40 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued and replaced by the SAIJ100X600-40. It features a 100mm bore, G1/2 port, and a 600mm nominal stroke that you can trim by up to 40mm on-site using an external stop screw, yielding a usable extend range of 560-600mm. This stop sets the end position but is not a load lock; the cylinder drifts on air loss.
The SAIJ direct retains the identical ISO 15552 mounting interface, M20x1.5 rod thread, and 36mm adjustable cushions. Upgrades include a two Y-shaped one-way piston seal for low start-up pressure. Note this SKU lacks a magnet (-S) for sensing. At 600mm, external guides are advised to prevent rod bending.
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X600-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X600-40 |
| Bore size | Ø100 mm |
| Stroke | 600 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 SAIJ100X600-40 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 | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAIJ100X600-40 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). |
|---|---|
| 100 | Bore size in mm. |
| ×600 | 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 dial in the exact 560-600mm extend position for seating bearings without machining custom spacers.
Adjusts the extend stop on-site to deflect varying package sizes on a sorting line within the 40mm trim window.
Sets a precise mechanical end position for a pallet stop, ensuring repeatable placement even if sensor targets shift.
To replace the discontinued SIJ100X600-40, order the direct replacement SAIJ100X600-40, which preserves the G1/2 port, 600mm stroke, 40mm adjust window, and FA/LB/TC mounts. Choose the 40mm adjust window if your extend stroke needs field tuning between 560-600mm. Select FA, LB, or TC mounting per your ISO 15552 fixture. This non-magnetic SKU cannot take a switch; add -S if you need legacy CS1-B/DS1-B sensor accuracy. Because the 600mm stroke exceeds 300mm, use external guides to manage side-load and prevent rod bending. The stop screw sets end position only; for load holding on air loss, use SAIL/BSAI or an external rod lock.
Replacement checklist
Yes, the SIJ100X600-40 is discontinued. The direct replacement is the SAIJ100X600-40, offering the same ISO 15552 interface, 100mm bore, 600mm stroke, 40mm adjust window, G1/2 port, and mounting options.
The external stop screw trims the extend stroke by up to 40mm on-site (usable range 560-600mm). 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 SAIJ100X600-40 replacement — usually within 7-8 hours.