This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X175H, 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 SI32X175H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 175mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X175H, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32X175H is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 175 mm stroke. Built for high-temperature duty, it features a Viton H seal rated for 0 to 150 C. This legacy unit delivers 402 N push force at 0.5 MPa through its G1/8 port. AirTAC replaced it with the SAI32X175H, a direct sharing the exact mounting interface, bore, stroke, output force, and cushioning.
The SAI upgrade introduces an advanced piston seal with two Y-shaped one-way elements for lower start-up pressure and extended life. As this SKU lacks a magnet, it cannot accept a sensor.
| Model | Airtac SI32 Standard Air Cylinder SI32X175H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X175H |
| Bore size | Ø32 mm |
| Stroke | 175 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 SAI32X175H 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 SAI32X175H 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. |
| ×175 | 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).
Cycles at 30-800 mm/s to push lightweight packages, relying on the 27 mm adjustable air cushions for smooth end-of-stroke deceleration.
Extends 175 mm to position samples inside heated chambers, where the high-temp FKM seal survives conditions that standard NBR cannot.
To replace the SI32X175H, order the SAI32X175H. Verify your ISO 15552 mounting accessory (LB, FA, FB, CA, CB, TC), the G1/8 port thread, and the M10x1.25 rod end. Because this specific SKU has no magnet (-S), it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI if position feedback is needed. If your application exceeds the 402 N push at 0.5 MPa, step up to a 40 mm bore (628 N). If you need to hold a load without live air, the standard cushion only decelerates; use an external pilot check valve or explore the SAIL or BSAI lock variants. With a 175 mm stroke, side-load is minimal, but ensure proper guide alignment to prevent rod bending.
Replacement checklist
Yes, the AirTAC SI32X175H is discontinued. The direct replacement is the SAI32X175H. It is dimensionally interchangeable per ISO 15552, retaining the same 32 mm bore, 175 mm stroke, force, G1/8 port, and mounting interface.
This double-acting cylinder uses a G1/8 port and provides 402 N push / 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.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X175H replacement — usually within 7-8 hours.