This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X585, 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 SI32X585 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 585mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X585, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32X585 is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 585 mm stroke. It delivers 402 N push force at 0.5 MPa via a G1/8 port. AirTAC replaced this legacy unit with the SAI32X585, a direct sharing the exact mounting interface, bore, and stroke.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure. Note this SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors.
| Model | Airtac SI32 Standard Air Cylinder SI32X585 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X585 |
| Bore size | Ø32 mm |
| Stroke | 585 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 SAI32X585 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 SAI32X585 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. |
| ×585 | 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).
Ideal for pushing light cartons off a belt line using the 402 N push force at 0.5 MPa over a 585 mm travel distance.
Moves workpieces between parallel stations, benefiting from the adjustable 27 mm air cushions at both ends for smooth stops.
To replace the SI32X585, order the SAI32X585. Verify your ISO 15552 mounting (LB, FA, TC, etc.), G1/8 port thread (PT/G/NPT), and M10x1.25 rod end. Because this is a non-magnet SKU, it cannot hold a sensor; order an SAI32X585S if position detection is needed. For sizing, the 40 mm bore offers more force (628 N push @0.5 MPa), while dropping pressure saves air. At 585 mm stroke, prevent rod bending by using an external guide to absorb side loads. A plain cylinder drifts on air loss; for load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
Yes, the SI32X585 is discontinued. The direct replacement is the SAI32X585. It shares the same ISO 15552 mounting interface, 32 mm bore, 585 mm stroke, output force, and G1/8 port, fitting existing fixtures perfectly.
The 32 mm bore uses a G1/8 port. It generates 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, 724 N push at 0.9 MPa, and a theoretical max of 82 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X585 replacement — usually within 7-8 hours.