This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X500-100, 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 SIJ32 Double Rod Adjustable Cylinder SIJ32X500-100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 500mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ32X500-100, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ32X500-100 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 32 mm bore and 500 mm maximum stroke. An external stop screw lets you trim the extend stroke by up to 100 mm on-site, yielding a usable 400-500 mm extension window. As an end-of-life product, it is fully replaced by the SAIJ32X500-100.
The SAIJ direct successor shares the exact ISO 15552 mounting interface, bore, and force, while upgrading the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Note this SKU lacks a -S magnet, so it cannot accept legacy CS1-B/DS1-B switches. The stop screw sets end position only; it is not a lock.
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X500-100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X500-100 |
| Bore size | Ø32 mm |
| Stroke | 500 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 SAIJ32X500-100 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 | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAIJ32X500-100 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). |
|---|---|
| 32 | 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).
Trimming the 500 mm extend stroke by up to 100 mm on-site allows precise depth control for boring operations without swapping the entire cylinder.
Tuning the extend stroke from 400 to 500 mm accommodates varying package sizes on a transfer line, ensuring accurate push-off positioning.
The external stop screw provides a hard mechanical end position for indexing lifts, allowing field adjustment of the final extension height.
To replace this discontinued model, map directly to SAIJ32X500-100 (insert A after the leading S), retaining the 32 mm bore, 500 mm max stroke, 100 mm adjust window, and G1/8 port. Choose the 100 mm adjust window when you need on-site extend tuning from 400-500 mm. Mounting options include FA, LB, and TC brackets. Because this is a 500 mm stroke, use external guides to prevent rod bending and side-load damage. This non-magnetic SKU cannot take sensors; for load holding on air loss, use an external rod lock or SAIL/BSAI variant, as the stop screw is not a lock.
Replacement checklist
Yes, the SIJ32X500-100 is discontinued. The direct replacement is the SAIJ32X500-100, sharing the same ISO 15552 interface, 32 mm bore, 500 mm stroke, 100 mm adjust window, and G1/8 port.
The external stop screw window is 100 mm, allowing the extend stroke to be shortened from 500 mm down to 400 mm on-site.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X500-100 replacement — usually within 7-8 hours.