This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ50X160-30S, 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 SUJ Adjustable Cylinder SUJ50X160-30S is a double-acting profile-type standard cylinder with a Ø50mm bore and 160mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ50X160-30S, which matches its bore, stroke, force and mounting.
The AirTAC SUJ50X160-30S is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 30mm on-site, yielding a usable 130-160mm stroke from the 160mm nominal maximum. It features a 50mm bore, a 20mm rod, M16x1.5 rod-end thread, and a 1/4" port.
The direct replacement is the SAUJ50X160-30S, which matches the bore, stroke, force, port, and FA/LB mounting. Upgrading to the SAUJ moves you to current CMSG/DMSG/EMSG sensors, as this SUJ uses legacy CS1-B/DS1-B switches. The stop screw sets the end position; it is not a load lock, so use an external rod lock for held loads.
| Model | Airtac SUJ Adjustable Cylinder SUJ50X160-30S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X160-30S |
| Bore size | Ø50 mm |
| Stroke | 160 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 SAUJ50X160-30S 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 SAUJ50X160-30S 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. |
| ×160 | 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.
Trimming the extend stroke by up to 30mm on-site allows precise volume calibration for a dispensing head without fabricating new mechanical spacers.
Adjusting the extend stop on the fly accommodates different package widths on a sorting line, ensuring the diverter finger reaches the exact required position.
Tuning the extend stroke lets a material pusher adapt to varying pallet depths on the fly, ensuring components seat correctly without repositioning the entire cylinder assembly.
To replace the discontinued SUJ50X160-30S, order the SAUJ50X160-30S. It is a direct: the 50mm bore, 160mm stroke, 30mm adjust window, 1/4" port, and FA/LB mounting are unchanged. The 30mm adjust window is ideal when you need precise end-position tuning without machining spacers. Because this model has the -S magnet, you must migrate from legacy CS1-B/DS1-B switches to CMSG/DMSG/EMSG sensors. For strokes >=300mm, verify your side-load guide tolerance. Remember the adjust stop sets position but does not lock the load.
Replacement checklist
Yes, the SUJ50X160-30S is discontinued. The direct replacement is the SAUJ50X160-30S. It matches the 50mm bore, 160mm nominal stroke, 30mm adjust window, 1/4" port, and FA/LB mounting. You will need to upgrade the -S magnet sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
The external stop screw window is 30mm, allowing you to shorten the extend stroke from the 160mm maximum down to 130mm on-site. The stop sets end position and is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ50X160-30S replacement — usually within 7-8 hours.