This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X390SH, 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.
Airtac SU32~50 Standard Cylinder SU50X390SH
The AirTAC SU32~50 Standard Cylinder SU50X390SH is a double-acting profile-type standard cylinder with a Ø50mm bore and 390mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X390SH, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke390 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X390SH
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SU32~50 Standard Cylinder SU50X390SH
The AirTAC SU50X390SH is a discontinued double-acting profile-type cylinder with a 50mm bore, 390mm stroke, 1/4" port, and Viton H high-temperature seals (0-150 C). It delivers 982 N push and 825 N pull at 0.5 MPa. AirTAC replaced this unit with the SAU50X390SH, a direct alternative matching the exact bore, stroke, output force, port size, and SC-series mounting.
The SAU upgrade retains the compact extruded aluminum body but shifts the -S magnet to modern CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches. It also introduces the SAUF built-in 4M valve option absent in the SU line. Note that standard cylinders drift without live air; use an external rod lock for holding.
Airtac SU32~50 Standard Cylinder SU50X390SH Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X390SH |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X390SH |
| Bore size | Ø50 mm |
| Stroke | 390 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 SAU50X390SH carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAU50X390SH produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SU32~50 Standard Cylinder SU50X390SH
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×390 | 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.
Where the Airtac SU32~50 Standard Cylinder SU50X390SH Is Used
Hot Product Diversion
Actuates diverters on high-temperature conveyor lines, utilizing the 390mm stroke and Viton H seals to push heated packaged goods without thermal degradation.
Extended Reach Gating
Drives long-throw safety gates or machine guards, providing 982 N of push force at 0.5 MPa to reliably move heavy barriers into locked positions.
Replacing the Airtac SU32~50 Standard Cylinder SU50X390SH with the SAU50X390SH
To replace this discontinued SU50X390SH, order the SAU50X390SH. Confirm the 50mm bore, 390mm stroke, 1/4" port, M16x1.5 rod thread, and SC-series mounting. Because this unit has a 390mm stroke, prevent rod bending by guiding the load externally to avoid side-load stress. If sizing neighbors, a 40mm bore yields 628 N push at 0.5 MPa, while a 63mm bore offers 1559 N. The -S magnet requires switching to CMSG/DMSG/EMSG sensors on the SAU. The -H Viton seal handles up to 150 C. For load holding on air loss, add a pilot-operated check valve, as cushions only decelerate. The SAUF valve-integrated variant can simplify plumbing if needed.
Replacement checklist
- ✓ Same bore / stroke → SAU50X390SH
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S): sensor family CS1-B → CMSG
- ✓ Mounting reused (FA/FB/CA/CB/LB)
- ✓ Need a built-in valve? → SAUF
Airtac SU32~50 Standard Cylinder SU50X390SH FAQ
Yes, the SU50X390SH is discontinued. The direct replacement is the AirTAC SAU50X390SH. It matches the 50mm bore, 390mm stroke, 1/4" port, 200 kgf max force, and SC-series mounting. You must upgrade the -S magnet sensors from the old CS1-B/DS1-B to the current CMSG/DMSG/EMSG switches.
The 50mm bore features a 1/4" air port and M16x1.5 rod thread. At 0.5 MPa it provides 982 N push and 825 N pull. At 0.7 MPa push is 1374 N, and 1767 N at 0.9 MPa. The theoretical maximum force is 200 kgf at 1.0 MPa.
Related AirTAC SAU Cylinders
Request a Quote for the SAU50X390SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X390SH replacement — usually within 7-8 hours.