This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X50-50, 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 SIJ32X50-50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 50mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ32X50-50, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ32X50-50 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder. It is discontinued and replaced by the SAIJ32X50-50. The external stop screw lets you trim the extend stroke by up to 50mm on-site.
The SAIJ direct uses an upgraded two Y-shaped one-way piston seal for low start-up pressure. The stop sets end position but is not a load lock; use SAIL or BSAI for holding.
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X50-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X50-50 |
| Bore size | Ø32 mm |
| Stroke | 50 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 SAIJ32X50-50 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 SAIJ32X50-50 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. |
| ×50 | 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).
Tune the extend stop on-site to clamp delicate parts precisely without re-engineering the fixture.
Adjust the extend stroke to meet varying package sizes on a line, ensuring accurate pusher positioning.
Dial in the exact insertion depth for small pins or bearings, compensating for material tolerances.
To replace the discontinued SIJ32X50-50, order the direct replacement SAIJ32X50-50, reusing your FA, LB, or TC mounts. This SKU has no -S magnet and cannot take a switch. The 50mm adjust window allows full extend trim. For strokes over 300mm, mind side loads.
Replacement checklist
Yes, the SIJ32X50-50 is discontinued. The direct replacement is the SAIJ32X50-50, sharing the same ISO 15552 interface, 50mm stroke, 50mm adjust window, G1/8 port, and mounting.
The external stop screw allows trimming the extend stroke by up to 50mm on-site.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X50-50 replacement — usually within 7-8 hours.