This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X170, 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 Airtac SU32~50 Standard Cylinder SU50X170 is a double-acting profile-type standard cylinder with a Ø50mm bore and 170mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X170, which matches its bore, stroke, force and mounting.
The AirTAC SU50X170 is a discontinued double-acting profile-type cylinder with a 50mm bore and 170mm stroke. Built with an extruded aluminum barrel, it is more compact than an ISO 15552 cylinder of the same bore. It delivers 982N push force at 0.5MPa and features a 1/4" port. AirTAC replaced this EOL unit with the SAU50X170, a direct replacement retaining the exact bore, stroke, output force, port size, and SC-series mounting.
When upgrading, note the SAU50X170 uses current CMSG/DMSG/EMSG sensors, whereas this legacy SU lacked a magnet entirely and cannot accept any switch. The SAU family also introduces the SAUF variant with a built-in 4M solenoid valve, an option the SU line never offered.
| Model | Airtac SU32~50 Standard Cylinder SU50X170 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X170 |
| Bore size | Ø50 mm |
| Stroke | 170 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 SAU50X170 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 SAU50X170 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. |
| ×170 | 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.
Functions as a pneumatic stop gate for roller conveyors, utilizing the compact profile to fit tight conveyor frames.
Drives medium-duty clamping fixtures in machining cells, providing 825N pull force to secure workpieces during drilling.
To replace the SU50X170, order the SAU50X170 ensuring your 1/4" port threads (PT/G/NPT) and SC-series mounting accessories match. Because this specific SKU has no magnet, you cannot mount a sensor; if sensing is now required, specify an SAU50X170S and upgrade to CMSG/DMSG/EMSG switches. For loads needing 1374N push at 0.7MPa, the 50mm bore is adequate, but if downward sizing is possible, a 40mm bore provides 879N. A plain cylinder drifts on air loss—the 21mm cushions only decelerate the piston, so add an external rod lock for held loads. At 170mm stroke, rod bending is minimal, but always guide the load to prevent side-load wear.
Replacement checklist
Yes, the SU50X170 is discontinued. The direct replacement is the AirTAC SAU50X170. It matches the 50mm bore, 170mm stroke, 982N force, 1/4" port, and SC-series mounting, so it fits the same application without mechanical modifications.
At 0.5MPa it provides 982N push and 825N pull; at 0.7MPa it pushes 1374N, with a theoretical max of 200kgf at 1.0MPa. This specific SKU lacks a magnet and cannot accept a sensor. If sensing is needed, the SAU50X170S replacement uses CMSG/DMSG/EMSG switches.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X170 replacement — usually within 7-8 hours.