This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X450-30, 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 SIJ32 Double Rod Adjustable Cylinder SIJ32X450-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 450mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ32X450-30, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ32X450-30 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 30mm on-site, yielding a usable 420-450mm stroke. The 32mm bore features a G1/8 port, M10x1.25 rod thread, and 27mm adjustable cushions.
The direct replacement is the SAIJ32X450-30, matching the bore, stroke, force, and mounting. The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. Note: the stop screw sets end position but is not a load lock; use an external rod lock for holding.
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X450-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X450-30 |
| Bore size | Ø32 mm |
| Stroke | 450 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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, 27 mm |
| Max standard stroke | Up to 1000 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ32X450-30 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 | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAIJ32X450-30 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). |
|---|---|
| 32 | Bore size in mm. |
| ×450 | 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).
Trimming the extend stroke by up to 30mm on-site allows precise calibration of a diverter gate without swapping cylinders, ensuring product flows into the correct packaging lane.
A 420-450mm adjustable extend stroke accommodates varying package sizes on a conveyor, letting operators dial in the exact push distance required for different product runs.
To replace the discontinued SIJ32X450-30, order the direct replacement SAIJ32X450-30, reusing your existing FA, LB, or TC ISO 15552 mounts. The 30mm adjust window is ideal for fine-tuning the extend endpoint without machining. Because this SKU lacks the -S magnet, it cannot accept a magnetic switch for position sensing. Finally, at 450mm stroke, mind the side-load and rod-bending risks—ensure external guides support the load to prevent premature seal wear.
Replacement checklist
Yes, the SIJ32X450-30 is discontinued. The direct replacement is the SAIJ32X450-30, which shares the same ISO 15552 interface, 450mm stroke, 30mm adjust window, G1/8 port, and mounting options. The SAIJ family also features an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw provides a 30mm adjustment window, meaning the usable extend stroke is 420-450mm. 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 SAIJ32X450-30 replacement — usually within 7-8 hours.