This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ50X100-10S, 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 SUJ Adjustable Cylinder SUJ50X100-10S is a double-acting profile-type standard cylinder with a Ø50mm bore and 100mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ50X100-10S, which matches its bore, stroke, force and mounting.
The AirTAC SUJ50X100-10S is a double-acting, double-rod profile cylinder with a 100 mm maximum stroke and a built-in piston magnet (-S). An external stop screw lets you trim the extend stroke by up to 10 mm on-site, yielding a usable 90-100 mm stroke window for precise end-position tuning.
The direct replacement is the SAUJ50X100-10S, retaining the 50 mm bore, 1/4" port, M16x1.5 rod thread, and FA/LB mounting compatibility with the SC series. The SAUJ upgrade adopts current CMSG/DMSG/EMSG sensors, superseding the legacy CS1-B/DS1-B switches used here. The stop screw sets end position only; it is not a load lock, so use an external rod lock for held loads.
| Model | Airtac SUJ Adjustable Cylinder SUJ50X100-10S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X100-10S |
| Bore size | Ø50 mm |
| Stroke | 100 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 SAUJ50X100-10S 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 SAUJ50X100-10S 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. |
| ×100 | 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.
Adjusting the final 0-10 mm extend stroke on-site to set exact contact pressure against delicate test probes without re-mounting the cylinder.
Fine-tuning the extend end position by up to 10 mm to accommodate varying package sizes on a packaging line diverter arm.
Trimming the extend stroke in the field to align pallet stops precisely when conveyor roller heights vary slightly.
To replace this discontinued SUJ50X100-10S, specify the SAUJ50X100-10S, which matches the 50 mm bore, 100 mm nominal stroke, 10 mm adjust window, 1/4" port, and FA/LB/SC-series mounting. Select the 10 mm adjust window if you need 90-100 mm of extend travel; for larger field trims, choose a 20 mm or 30 mm adjust model. Because this unit has an -S magnet, migrate position sensing from the old CS1-B/DS1-B to the modern CMSG/DMSG/EMSG sensors. For strokes of 300 mm or longer, verify side-load limits to prevent rod binding.
Replacement checklist
Yes, the SUJ50X100-10S is discontinued. The direct replacement is the SAUJ50X100-10S, which matches the 50 mm bore, 100 mm stroke, 10 mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
The external stop screw allows you to trim the extend stroke by up to 10 mm on-site, giving a usable 90-100 mm stroke. The stop sets end position only and is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ50X100-10S replacement — usually within 7-8 hours.