This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X100-50, 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 SUJ100X100-50 is a double-acting profile-type standard cylinder with a Ø100mm bore and 100mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ100X100-50, which matches its bore, stroke, force and mounting.
The AirTAC SUJ100X100-50 is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 50 mm on-site, yielding a usable 50-100 mm stroke from the 100 mm nominal maximum. It features a 25 mm rod, M20x1.5 rod thread, 29 mm adjustable air cushions, and a 1/2" port.
Because the SUJ line is end-of-life, the direct replacement is the SAUJ100X100-50, which preserves the bore, stroke, force, 1/2" port, and SC-series FA/LB mounting. The SAUJ upgrade adopts current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches used here, and it offers the SAUF built-in-valve variant. Note this non-magnet SKU cannot take a switch, and the stop screw sets end position but is not a load lock.
| Model | Airtac SUJ Adjustable Cylinder SUJ100X100-50 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X100-50 |
| Bore size | Ø100 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | 1/2" |
| Rod thread | M20×1.5 |
| 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, 29 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUJ100X100-50 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAUJ100X100-50 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). |
|---|---|
| 100 | 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.
Dialing in the exact bottoming position on pressing stations without swapping cylinders, using the 50 mm window to fine-tune the 100 mm extend for varying insert depths.
Trimming the extend stroke on-site to accommodate different package sizes on a sorting line, allowing the diverter to reach precisely without repositioning the whole mount.
Setting precise end positions for pallet stops in handling cells where the required extend length changes based on pallet dimensions, using the external screw for rapid field adjustment.
Choose the 50 mm adjust window if your fixture needs on-site extend tuning between 50 and 100 mm, which often beats machining a custom fixed-stroke SAU plus an external stop. Mounting uses FA or LB brackets compatible with the AirTAC SC series. Because this SKU lacks a magnet, it cannot take a switch; the SAUJ upgrade requires current CMSG/DMSG/EMSG sensors instead of legacy CS1-B/DS1-B. For strokes of 300 mm or longer, verify side-load limits to prevent rod binding. Finally, the stop screw sets end position but is not a load lock; use an external rod lock or pilot-operated check valve for held loads.
Replacement checklist
Yes, the SUJ100X100-50 is discontinued. The direct replacement is the SAUJ100X100-50, which matches the 100 mm bore, 100 mm stroke, 50 mm adjust window, 1/2" port, and FA/LB mounting. The SAUJ also uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches and offers the SAUF built-in-valve variant.
The external stop screw trims the extend stroke by up to 50 mm on-site, giving a usable 50-100 mm stroke. It uses a 1/2" port, 29 mm cushions, and a 25 mm rod. The stop sets end position but is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X100-50 replacement — usually within 7-8 hours.