This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ32X175-50, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAU replacement uses the same profile body, bore, stroke, force and SC-series mounting. It moves to the current CMSG / DMSG / EMSG sensor switches (the SU used CS1-B / DS1-B) and adds the SAUF valve-integrated option.

The AirTAC SUJ Adjustable Cylinder SUJ32X175-50 is a double-acting profile-type standard cylinder with a Ø32mm bore and 175mm stroke, 1/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ32X175-50, which matches its bore, stroke, force and mounting.
The AirTAC SUJ32X175-50 is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 50 mm on-site, giving a usable forward travel of 125 to 175 mm. The nominal 175 mm stroke is the maximum. The bore dictates a 1/8" port and a 12 mm rod with an M10x1.25 thread.
This discontinued model is fully replaced by the direct replacement SAUJ32X175-50, which retains the exact bore, stroke, force, port, and FA/LB mounting. The SAUJ upgrades sensing to current CMSG/DMSG/EMSG switches, whereas this legacy unit used CS1-B/DS1-B. Because this specific SKU lacks a magnet, it cannot take a switch at all.
| Model | Airtac SUJ Adjustable Cylinder SUJ32X175-50 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ32X175-50 |
| Bore size | Ø32 mm |
| Stroke | 175 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| 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, 21 mm |
| Max standard stroke | Up to 1000 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUJ32X175-50 carries the same 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 SAUJ32X175-50 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×175 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SU-family variants: SUD (double rod), SUJ (adjustable stroke) — each maps to its SAU equivalent (SUD→SAUD, SUJ→SAUJ). The current SAU line adds the SAUF valve-integrated option.
Tuning the extend stroke by up to 50 mm on-site allows a single actuator to drive multiple product pitches without swapping mechanical stops.
Dialing in the exact 125 to 175 mm forward travel ensures parts transfer smoothly between conveyor lanes during format changes.
To replace this discontinued cylinder, order the direct replacement SAUJ32X175-50, which matches the 32 mm bore, 175 mm stroke, 50 mm adjust window, 1/8" port, and FA/LB mounting. Choose the 50 mm adjust window if your fixture needs on-site tuning between 125 and 175 mm; the stop screw sets end position but is not a load lock. This non-magnetic SKU cannot take a switch, but if you need position sensing on the SAUJ, specify the -S option and use CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B. For strokes of 300 mm or longer, verify side-load limits to prevent rod binding.
Replacement checklist
Yes, the SUJ32X175-50 is discontinued. The direct replacement is the SAUJ32X175-50, offering the same 32 mm bore, 175 mm stroke, 50 mm adjust window, 1/8" port, and FA/LB mounting.
The external stop screw provides a 50 mm adjust window, allowing you to shorten the extend stroke from the 175 mm maximum down to 125 mm.
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ32X175-50 replacement — usually within 7-8 hours.