This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ50X900-100S, 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.
Airtac SUJ Adjustable Cylinder SUJ50X900-100S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X900-100S is a double-acting profile-type standard cylinder with a Ø50mm bore and 900mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ50X900-100S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke900 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X900-100S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SUJ Adjustable Cylinder SUJ50X900-100S
The AirTAC SUJ50X900-100S is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 100 mm on-site, giving a usable extend range of 800-900 mm from the 900 mm nominal maximum. It features a 1/4" port, an M16x1.5 rod thread, and 21 mm adjustable air cushions at each end. This SUJ model is discontinued and the direct replacement is the SAUJ50X900-100S.
The stop screw sets the end position but is not a load lock; a plain cylinder drifts on air loss, so use an external rod lock for held loads. The SAUJ upgrade retains the SC-series FA/LB mounting but uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches on this -S model. At a 900 mm stroke, external guides are recommended to prevent rod bending under side loads.
Airtac SUJ Adjustable Cylinder SUJ50X900-100S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X900-100S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X900-100S |
| Bore size | Ø50 mm |
| Stroke | 900 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 SAUJ50X900-100S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAUJ50X900-100S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SUJ Adjustable Cylinder SUJ50X900-100S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×900 | 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.
Where the Airtac SUJ Adjustable Cylinder SUJ50X900-100S Is Used
Variable-Length Ejector
Tuning the extend stroke by up to 100 mm on-site lets an ejection pin hit different material lengths without swapping the entire cylinder.
Adjustable Transfer Stop
Trimming the 900 mm extend stroke precisely positions a transfer gate to accommodate varying package widths on a moving belt.
Calibrated Pusher Arm
Dialing in the end position externally simplifies aligning a pusher arm to feed varying pallet sizes into a wrapping station.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X900-100S with the SAUJ50X900-100S
To replace the discontinued SUJ50X900-100S, order the direct replacement SAUJ50X900-100S, which matches the 50 mm bore, 900 mm stroke, 100 mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ also offers a SAUF built-in-valve variant the SU line lacked. Choose the 100 mm adjust window if you need on-site extend tuning between 800 and 900 mm. Because the -S suffix denotes a magnet, swap the legacy CS1-B/DS1-B sensors for CMSG/DMSG/EMSG switches on the SAUJ. For this 900 mm stroke, add external guides to manage side-load and rod-bending risks.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X900-100S
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S): sensor family CS1-B → CMSG
- ✓ Mounting reused (FA/FB/CA/CB/LB)
- ✓ Need a built-in valve? → SAUF
Airtac SUJ Adjustable Cylinder SUJ50X900-100S FAQ
Yes, the SUJ50X900-100S is discontinued. The direct replacement is the SAUJ50X900-100S, which shares the same 50 mm bore, 900 mm stroke, 100 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 provides a 100 mm adjustment window, allowing the extend stroke to be shortened from the 900 mm maximum down to 800 mm on-site. The stop sets end position only and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ50X900-100S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ50X900-100S replacement — usually within 7-8 hours.