This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X80-75STC, 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 SIJ32X80-75STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 80mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ32X80-75STC, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ32X80-75STC is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 32mm bore, G1/8 port, and 80mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 75mm on-site, yielding a usable 5-80mm extend window. The direct replacement is the SAIJ32X80-75STC, retaining the same interface, force, and TC mounting.
The SAIJ successor incorporates an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life. The stop screw sets the end position but is not a load lock; for held loads use an external rod lock or SAIL variant. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B sensors.
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X80-75STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X80-75STC |
| Bore size | Ø32 mm |
| Stroke | 80 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 SAIJ32X80-75STC 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 SAIJ32X80-75STC 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. |
| ×80 | 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).
Needs field stroke tuning to alter the extend endpoint on-site for sorting parts of varying lengths without swapping cylinders.
Requires trimming the extend stroke by up to 75mm to reposition a diverting mechanism for different package widths on the line.
Demands an on-site stroke adjustment to push boxes to varying conveyor depths, using the stop screw to set the exact 5-80mm extend.
To replace the discontinued SIJ32X80-75STC, order the direct replacement SAIJ32X80-75STC, keeping the 32mm bore, 80mm nominal stroke, 75mm adjust window, -S magnet, and TC mount. The 75mm adjust window is ideal when exact extend positions vary on-site. The TC mount provides a trunnion interface for pivot applications. For stroke lengths >=300mm, verify side-load limits to prevent rod binding. The stop screw sets end position only; it does not hold loads on air loss.
Replacement checklist
Yes, the SIJ32X80-75STC is discontinued. The direct replacement is the SAIJ32X80-75STC, offering the same ISO 15552 interface, 32mm bore, 80mm stroke, 75mm adjust window, G1/8 port, and TC mounting.
The external stop screw provides a 75mm adjust window, shortening the 80mm nominal extend stroke down to 5mm on-site. The G1/8 port and 27mm cushions are fixed by the bore.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X80-75STC replacement — usually within 7-8 hours.