This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X105-50S, 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 SIJ32X105-50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 105mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ32X105-50S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ32X105-50S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 32 mm bore and G1/8 port. An external stop screw lets you trim the extend stroke by up to 50 mm on-site, giving a usable 55-105 mm window from the 105 mm nominal maximum. The stop sets the end position but is not a load lock. This SIJ model is discontinued; the direct replacement is the SAIJ32X105-50S, retaining the same interface, force, and mounting.
The SAIJ upgrade utilizes an upgraded two-piece Y-shaped piston seal for low start-up pressure and long life. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches.
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X105-50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X105-50S |
| Bore size | Ø32 mm |
| Stroke | 105 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 SAIJ32X105-50S 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 SAIJ32X105-50S 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. |
| ×105 | 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 dial in the exact 55-105 mm extend reach of a diverter gate without swapping cylinders, using the external stop screw to account for varying package sizes.
Demands on-site stroke trimming to set precise 55-105 mm pressing depths for light assembly tasks, allowing operators to shorten the extend stroke by up to 50 mm as needed.
To replace the discontinued SIJ32X105-50S, order the direct replacement SAIJ32X105-50S, which preserves the 32 mm bore, 105 mm stroke, 50 mm adjust window, G1/8 port, and FA/LB/TC mountings. Choose the 50 mm adjust window when your application requires field tuning of the extend stroke within a 55-105 mm range. The -S suffix confirms the piston magnet is present for switch sensing. For strokes of 300 mm or longer, verify the side-load capacity to prevent rod deflection. The external stop screw sets the end position but does not hold the load on air loss; for held loads, use an external rod lock or the SAIL/BSAI variant.
Replacement checklist
Yes, the SIJ32X105-50S is discontinued. The direct replacement is the SAIJ32X105-50S, which maintains the same ISO 15552 interface, 32 mm bore, 105 mm stroke, 50 mm adjust window, and G1/8 port.
The external stop screw offers a 50 mm adjust window, allowing the 105 mm extend stroke to be shortened to a minimum of 55 mm on-site.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X105-50S replacement — usually within 7-8 hours.