This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X350, 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 SU50X350 is a double-acting profile-type standard cylinder with a Ø50mm bore and 350mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X350, which matches its bore, stroke, force and mounting.
The AirTAC SU50X350 is a discontinued double-acting profile-type cylinder featuring a 50mm bore and 350mm stroke. It delivers 982N push force at 0.5MPa via a 1/4 inch port. AirTAC replaced this legacy unit with the SAU50X350, a direct upgrade retaining the exact bore, stroke, output force, and SC-series mounting footprint.
The SAU upgrade introduces current CMSG/DMSG/EMSG sensors, replacing the obsolete CS1-B/DS1-B switches, and offers a new SAUF built-in valve variant. This SKU lacks a magnet, so it cannot accept sensing switches.
| Model | Airtac SU32~50 Standard Cylinder SU50X350 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X350 |
| Bore size | Ø50 mm |
| Stroke | 350 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 SAU50X350 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 SAU50X350 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. |
| ×350 | 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 medium-weight cartons off a main conveyor line using the 982N push force at 0.5MPa across the 350mm travel distance.
Acts as a pneumatic stop for pallets entering a wrapping zone, benefiting from the compact profile body and adjustable cushions.
To replace the discontinued SU50X350, order the SAU50X350. Confirm the 1/4 inch port, M16x1.5 rod thread, and SC-series mounting (LB/FA/FB/CA/CB). Because this 350mm stroke exceeds 300mm, use an external guide to prevent rod bending and side-load wear. If stepping up to the 63mm bore, the push force increases to 1559N at 0.5MPa; stepping down to 40mm drops it to 628N. This non-magnet SKU cannot hold a load without live air—the cushions only decelerate—so add a pilot-operated check valve or rod lock for vertical holding. The SAUF variant integrates a 4M solenoid valve if self-switching is needed.
Replacement checklist
Yes, the SU50X350 is discontinued. The direct replacement is the SAU50X350. It matches the 50mm bore, 350mm stroke, 982N force, 1/4 inch port, and SC-series mounting accessories.
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 sensors. The SAU replacement uses CMSG/DMSG/EMSG switches.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X350 replacement — usually within 7-8 hours.