This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX105S, 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 SI32 Standard Air Cylinder SI32AX105S 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 SAI32AX105S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32AX105S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 105mm stroke. It delivers 402N push force at 0.5MPa via a G1/8 port. The direct replacement is the SAI32AX105S, matching the interface, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. The -A rod is SUS420J2 stainless steel. Note that air cushions only decelerate; use a SAIL lock or external check valve for load holding.
| Model | Airtac SI32 Standard Air Cylinder SI32AX105S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX105S |
| 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 SAI32AX105S 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 SAI32AX105S 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).
Uses the 402N push force at 0.5MPa to eject small machined components from a fixture reliably without damaging the surface.
The 105mm stroke actuates a diverter arm on a packaging line, moving lightweight cartons between adjacent belts.
To replace the SI32AX105S, order the SAI32AX105S, confirming the ISO 15552 mounting interface, 32mm bore, 105mm stroke, G1/8 port, and the -S magnet for CS1-B/DS1-B switches. The SUS420J2 stainless rod (-A) is retained. At 0.5MPa it yields 402N push and 345N pull; if undersized, the neighboring 40mm bore provides 628N push. For load holding on air loss, the cushion will not lock the piston—select the SAIL or BSAI lock variant, or use an external pilot check valve.
Replacement checklist
Yes, the AirTAC SI32AX105S is discontinued. The direct replacement is the SAI32AX105S. It is dimensionally interchangeable per ISO 15552, retaining the same 32mm bore, 105mm stroke, G1/8 port, and mounting fixtures.
The 32mm bore features a G1/8 air port and an M10x1.25 rod thread. It generates 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical maximum of 82kgf at 1.0MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX105S replacement — usually within 7-8 hours.