This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X175, 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 SU50X175 is a double-acting profile-type standard cylinder with a Ø50mm bore and 175mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X175, which matches its bore, stroke, force and mounting.
The AirTAC SU50X175 is a discontinued double-acting profile-type cylinder with a 50 mm bore and 175 mm stroke. It delivers 982 N push force at 0.5 MPa through a 1/4" port. AirTAC replaced this unit with the SAU50X175 direct replacement, matching the exact body, stroke, force, port size and SC-series mounting accessories.
Because this SKU lacks a magnet (-S), it cannot accept a sensor. The SAU upgrade adds modern CMSG/DMSG/EMSG switch compatibility and a new SAUF built-in-valve variant. The extruded aluminum profile is more compact than an ISO 15552 cylinder of the same bore.
| Model | Airtac SU32~50 Standard Cylinder SU50X175 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X175 |
| Bore size | Ø50 mm |
| Stroke | 175 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 SAU50X175 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 SAU50X175 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. |
| ×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.
Pushes lightweight cartons off a sorting line using 982 N thrust, with the 175 mm stroke clearing the conveyor belt edge completely.
Secures medium workpieces during machining, utilizing the 21 mm adjustable air cushions to decelerate the 20 mm rod smoothly at stroke ends.
To replace the SU50X175, order the SAU50X175. Confirm the 50 mm bore, 175 mm stroke, 1/4" port, M16x1.5 rod thread and SC-series mounting. This non-magnetic SKU cannot take a switch; if you need sensing, specify an SAU-S model and migrate to CMSG/DMSG/EMSG sensors (the SU used legacy CS1-B/DS1-B). For higher loads, the 63 mm bore offers 1559 N push at 0.5 MPa; for tighter spaces, the 40 mm bore gives 628 N. A plain cylinder drifts on air loss—use an external rod lock or pilot-operated check valve to hold loads. At 175 mm stroke, rod bending is low, but ensure correct alignment to prevent side-load wear. The SAUF variant integrates a 4M solenoid valve if you need self-switching.
Replacement checklist
Yes, the SU50X175 is discontinued. The direct replacement is the AirTAC SAU50X175. It shares the same 50 mm bore, 175 mm stroke, 982 N force, 1/4" port and SC-series mounting, so it fits the same application directly.
At 0.5 MPa it pushes 982 N and pulls 825 N. It pushes 1374 N at 0.7 MPa and 1767 N at 0.9 MPa, with a theoretical max of 200 kgf at 1.0 MPa. This specific SKU has no magnet, so it cannot accept a sensor; the SAU-S replacement uses CMSG/DMSG/EMSG switches.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X175 replacement — usually within 7-8 hours.