This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X150-50, 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 SIJ32X150-50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 150mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ32X150-50, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ32X150-50 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. Its external stop screw lets you trim the extend stroke by up to 50 mm on-site, yielding a usable 100-150 mm extend window from the 150 mm nominal maximum. The 32 mm bore features a 12 mm rod, M10x1.25 thread, 27 mm adjustable cushions, G1/8 port, and 30-800 mm/s speed. This SKU has no -S magnet and cannot take a switch.
The direct replacement is the SAIJ32X150-50, matching the ISO 15552 mounting interface, bore, stroke, adjust window, and force. The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. The stop screw sets end position but is NOT a load lock; use an external rod lock or SAIL/BSAI for held loads.
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X150-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X150-50 |
| Bore size | Ø32 mm |
| Stroke | 150 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 SAIJ32X150-50 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 SAIJ32X150-50 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. |
| ×150 | 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).
Dial in precise extend stops between 100-150 mm for light stamping or forming tasks where material thickness changes frequently on the same fixture.
Tune the pusher end-point on-site to handle different package sizes without swapping the entire cylinder or re-engineering the machine layout.
Set custom extend lengths to sort or divert items into varying lane widths, using the external stop screw to quickly adapt to new SKU dimensions.
To replace the SIJ32X150-50, order the direct replacement SAIJ32X150-50 (insert A after the leading S), reusing your existing FA, LB, or TC ISO 15552 mounts. Choose the 50 mm adjust window if you need on-site extend tuning from 100-150 mm. Note this SKU lacks the -S magnet, so it cannot accept legacy CS1-B/DS1-B sensors. For stroke lengths >=300 mm, verify your guide alignment to prevent side-load wear. The stop screw only sets the end position; it does not lock, so for load holding on air loss use an external rod lock or pilot-operated check valve.
Replacement checklist
Yes, the SIJ32X150-50 is discontinued. The direct replacement is the SAIJ32X150-50, which shares the same ISO 15552 interface, 32 mm bore, 150 mm stroke, 50 mm adjust window, G1/8 port, and mounting options. The SAIJ family also features an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The external stop screw provides a 50 mm adjust window, allowing you to trim the extend stroke from the 150 mm nominal maximum down to 100 mm on-site. 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 SAIJ32X150-50 replacement — usually within 7-8 hours.