This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X500-100S, 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 SIJ32X500-100S 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 SAIJ32X500-100S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ32X500-100S 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. The stop sets the end position but is not a load lock; the cylinder drifts on air loss.
The direct replacement is the SAIJ32X500-100S, retaining the same ISO 15552 mounting interface, bore, and force. The SAIJ family upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. This -S model includes a piston magnet for legacy CS1-B/DS1-B switches.
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X500-100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X500-100S |
| 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 SAIJ32X500-100S 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 SAIJ32X500-100S 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).
Allows operators to fine-tune the extend stroke on-site for material thickness variations without swapping cylinders.
Trims the extend stroke to accommodate changing package sizes on a packaging line.
Sets precise mechanical end positions for pallets or workpieces where sensor repeatability alone is insufficient.
To replace the discontinued SIJ32X500-100S, order the direct replacement SAIJ32X500-100S, which matches the 32 mm bore, 500 mm max stroke, 100 mm adjust window, G1/8 port, and ISO 15552 mounting. Choose the 100 mm adjust window if your application requires field-tuning the extend stroke down to 400 mm. Mounting options include FA, LB, and TC brackets. Because the stroke is 500 mm, ensure external guides support side loads to prevent rod bending. The -S suffix indicates a built-in magnet for legacy CS1-B/DS1-B sensors; the SAIJ replacement uses current AirTAC switches. For load holding without live air, use an external rod lock or the SAIL/BSAI variants.
Replacement checklist
Yes, the SIJ32X500-100S is discontinued. The direct replacement is the SAIJ32X500-100S, which shares the same ISO 15552 interface, 32 mm bore, 500 mm max stroke, 100 mm adjust window, and G1/8 port.
The external stop screw allows trimming the extend stroke by up to 100 mm on-site, yielding a usable 400-500 mm stroke.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X500-100S replacement — usually within 7-8 hours.