This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X600STC, 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 SI32X600STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 600mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X600STC, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32X600STC is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 600mm stroke. It delivers 402N push force at 0.5MPa via a G1/8 port. AirTAC replaced this legacy unit with the SAI32X600STC, a direct upgrade retaining the exact same interface, TC trunnion mount, and dimensions.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. It also adds SAIL, SAIF, and BSAI variants absent from the SI line. The built-in magnet supports CS1-B/DS1-B sensors, while a Viton H seal option raises operating temps to 150C.
| Model | Airtac SI32 Standard Air Cylinder SI32X600STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X600STC |
| Bore size | Ø32 mm |
| Stroke | 600 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 SAI32X600STC 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 SAI32X600STC 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. |
| ×600 | 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).
Handles long-trreach component transfer between stations where a 32mm bore and 600mm stroke are required to bridge machine gaps.
To replace the SI32X600STC, order the SAI32X600STC. Confirm the ISO 15552 TC trunnion mounting interface, 32mm bore, 600mm stroke, G1/8 port, and the -S magnet for CS1-B/DS1-B switches. Sizing both ways: the 32mm bore yields 402N push at 0.5MPa, while the neighboring 40mm bore offers 628N. For this 600mm stroke, use an external guide to prevent rod bending and side-load wear. The air cushion only decelerates the piston; it does not hold load. For load holding on air loss, use an external pilot check valve or the SAIL lock variant.
Replacement checklist
Yes, the SI32X600STC is discontinued. The direct replacement is the SAI32X600STC. It is dimensionally interchangeable per ISO 15552, matching the 32mm bore, 600mm stroke, TC mount, G1/8 port, and output force.
The 32mm bore features a G1/8 port, M10x1.25 rod thread, and 27mm cushions. It provides 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a maximum theoretical force of 82kgf at 1.0MPa. Speed is 30-800mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X600STC replacement — usually within 7-8 hours.