This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X750, 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 SU32~50 Standard Cylinder SU50X750 is a double-acting profile-type standard cylinder with a Ø50mm bore and 750mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X750, which matches its bore, stroke, force and mounting.
The AirTAC SU50X750 is a discontinued double-acting profile-type cylinder with a 50mm bore and 750mm stroke. It delivers 982N push force at 0.5MPa through a 1/4" port. AirTAC replaced this legacy unit with the SAU50X750, a direct upgrade retaining the exact bore, stroke, force, and SC-series mounting footprint.
The SAU upgrade introduces CMSG/DMSG/EMSG sensors, superseding the older CS1-B/DS1-B switches, and offers a new SAUF valve-integrated variant. Note this SKU lacks a magnet and cannot support sensing.
| Model | Airtac SU32~50 Standard Cylinder SU50X750 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X750 |
| Bore size | Ø50 mm |
| Stroke | 750 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M16×1.5 |
| 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 1200 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAU50X750 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAU50X750 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). |
|---|---|
| 50 | Bore size in mm. |
| ×750 | 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.
Raises a 50kg tote to an overhead conveyor using 0.5MPa air pressure, requiring an external guide to prevent rod bending over the long stroke.
Ejects machined parts from a press bed over an extended 750mm distance, relying on adjustable 21mm air cushions to decelerate the payload smoothly.
To replace the SU50X750, order the SAU50X750. Confirm your 1/4" port thread (PT/G/NPT), M16x1.5 rod-end, and SC-series mounting (LB/FA/FB/CA/CB). Because this 750mm stroke is long, use an external guide to prevent rod bending and side-load damage. If moving up from a 40mm bore (628N push @0.5MPa), the 50mm provides 982N; stepping down from 63mm drops force from 1559N. This non-magnet SKU cannot take a sensor; if you need position detection, specify an SAU-S model and use CMSG/DMSG/EMSG switches. For load holding on air loss, add an external rod lock or pilot-operated check valve, as cushions only decelerate.
Replacement checklist
Yes, the SU50X750 is discontinued. The direct replacement is the AirTAC SAU50X750. It matches the 50mm bore, 750mm stroke, 982N force, 1/4" port, and SC-series mounting. The SAU also adds an optional SAUF built-in valve variant the SU lacked.
At 0.5MPa it pushes 982N and pulls 825N; at 0.7MPa it pushes 1374N, with a theoretical max of 200kgf at 1.0MPa. This specific SKU has no magnet and cannot take a sensor. If you need sensing, order the SAU50X750S replacement, which uses current CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X750 replacement — usually within 7-8 hours.