This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X365S, 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 SI32X365S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 365mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X365S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32X365S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 365mm stroke. It delivers 402N push force at 0.5MPa via a G1/8 port. The direct replacement is the SAI32X365S, matching the exact interface, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked.
| Model | Airtac SI32 Standard Air Cylinder SI32X365S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X365S |
| Bore size | Ø32 mm |
| Stroke | 365 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 SAI32X365S 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 SAI32X365S 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. |
| ×365 | 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 reliably push lightweight machined components out of a fixture across the 365mm stroke.
Extends 365mm to actuate a routing gate on a conveyor line, with the G1/8 port providing adequate flow for fast 30-800mm/s cycling.
To replace the SI32X365S, order the SAI32X365S. Confirm the ISO 15552 mounting interface, 32mm bore, 365mm stroke, G1/8 port, and the -S magnet for CS1-B/DS1-B sensors. Because the 365mm stroke exceeds 300mm, use an external guide to prevent rod bending and side-load wear. If you need more force than the 402N push at 0.5MPa, step up to the 40mm bore. Note that a plain cylinder drifts on air loss; for load holding, use the SAIL lock variant or an external pilot check valve.
Replacement checklist
Yes, the SI32X365S is discontinued. The direct replacement is the SAI32X365S. It is a true ISO 15552 profile cylinder that matches the 32mm bore, 365mm stroke, 402N force, G1/8 port, and mounting dimensions, dropping directly into existing fixtures.
This double-acting 32mm bore cylinder has a G1/8 port. It provides 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 SAI32X365S replacement — usually within 7-8 hours.