This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X50N, 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 SU50X50N is a double-acting profile-type standard cylinder with a Ø50mm bore and 50mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X50N, which matches its bore, stroke, force and mounting.
The AirTAC SU50X50N is a discontinued double-acting profile-type cylinder with a 50mm bore and 50mm stroke. Delivering 982 N push force at 0.5 MPa, it features an extruded aluminum barrel and 1/4" port. AirTAC replaced this unit with the SAU50X50N direct replacement, matching the exact bore, stroke, output force, port size, and SC-series mounting.
This NBR-sealed variant operates from -20 to +70 C. As a non-magnet SKU, it cannot accept position sensors. The SAU upgrade also introduces the SAUF valve-integrated option and uses CMSG/DMSG/EMSG sensors.
| Model | Airtac SU32~50 Standard Cylinder SU50X50N |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X50N |
| Bore size | Ø50 mm |
| Stroke | 50 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 SAU50X50N 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 SAU50X50N 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. |
| ×50 | 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.
Secures mid-weight machined parts during milling, delivering 982 N of clamping force at 0.5 MPa without exceeding safe load limits.
Short 50mm stroke pushes cartons off a main conveyor belt into sorting lanes, utilizing the compact profile to fit tight transfer spaces.
Acts as a pneumatic stop gate for incoming pallets on roller conveyors, safely absorbing momentum using the adjustable end cushions.
To replace this discontinued SU50X50N, order the SAU50X50N direct equivalent. Verify your 1/4" port, M16x1.5 rod thread, and SC-series mounting hardware. Because this SKU lacks a magnet (-S), it cannot support sensing; if you need switches on the new unit, add -S and note that SAU uses current CMSG/DMSG/EMSG sensors instead of legacy CS1-B/DS1-B. For sizing both ways: a 40mm bore yields 628 N push at 0.5 MPa, while a 63mm bore yields 1559 N. This cylinder does not hold load without live air; use an external rod lock or pilot-operated check valve for vertical holding, as the 21mm adjustable cushion only decelerates near stroke end.
Replacement checklist
Yes, the AirTAC SU50X50N is discontinued. The direct replacement is the SAU50X50N. It shares the identical 50mm bore, 50mm stroke, 982 N output force at 0.5 MPa, 1/4" port, and SC-series mounting, so it bolts right in.
At 0.5 MPa it pushes 982 N and pulls 825 N; at 0.7 MPa it pushes 1374 N, with a theoretical max of 200 kgf at 1.0 MPa. It cannot hold a load without continuous air pressure; the cushion only decelerates the piston. For vertical load holding, install an external rod lock or pilot-operated check valve.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X50N replacement — usually within 7-8 hours.