This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X395SH, 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 SU50X395SH is a double-acting profile-type standard cylinder with a Ø50mm bore and 395mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X395SH, which matches its bore, stroke, force and mounting.
The AirTAC SU50X395SH is a discontinued double-acting profile cylinder with a 50mm bore, 395mm stroke, and a Viton H high-temperature seal rated for 0 to 150 C. It delivers 982 N push force at 0.5 MPa through a 1/4 inch port. AirTAC replaced this end-of-life unit with the SAU50X395SH, a direct replacement retaining the exact bore, stroke, force, and SC-series mounting.
The SAU upgrade swaps the legacy CS1-B/DS1-B sensors for current CMSG/DMSG/EMSG switches and introduces the SAUF built-in-valve option the SU line lacked. Note that a plain cylinder drifts without live air; the cushions only decelerate, so use an external rod lock for holding.
| Model | Airtac SU32~50 Standard Cylinder SU50X395SH |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X395SH |
| Bore size | Ø50 mm |
| Stroke | 395 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 SAU50X395SH 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 SAU50X395SH 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. |
| ×395 | 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.
Routes heated molded parts along a transfer line, utilizing the Viton -H seal to withstand ambient radiant heat up to 150 C without degrading.
Opens and closes heavy access doors on industrial ovens, where the 395mm stroke provides the necessary travel and the 982 N push handles the mass.
Cycles a stopping flap in a high-temperature palletizing zone, relying on adjustable end cushions to decelerate the 50mm piston smoothly.
To replace this SU50X395SH, order the SAU50X395SH direct equivalent, verifying the 50mm bore, 395mm stroke, M16x1.5 rod thread, 1/4 inch port, and SC-series mounting. Because this is a -S magnet model, you must migrate from the old CS1-B/DS1-B switches to the SAU's CMSG/DMSG/EMSG sensors. The -H Viton seal correctly targets 150 C environments. At 0.5 MPa this bore yields 982 N push and 825 N pull; if undersized, step up to the 63mm bore (1559 N push). For the 395mm stroke, prevent rod bending by supporting the load with an external guide. The cylinder will not hold a load without air pressure, so add a pilot-operated check valve. If you need integrated control, explore the SAUF valve variant.
Replacement checklist
Yes, the AirTAC SU50X395SH is discontinued. The direct replacement is the SAU50X395SH. It matches the 50mm bore, 395mm stroke, 1/4 inch port, output force, and SC-series mounting, but uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
The 50mm bore generates 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and a theoretical maximum of 200 kgf at 1.0 MPa. Because this is the -H variant, the Viton seals raise the operating temperature limit to 150 C. The 1/4 inch port and 30-800 mm/s speed range remain standard.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X395SH replacement — usually within 7-8 hours.