This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ50X375-100S, 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 SUJ50X375-100S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X375-100S is a double-acting profile-type standard cylinder with a Ø50mm bore and 375mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ50X375-100S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke375 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X375-100S
- 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 SUJ50X375-100S
The AirTAC SUJ50X375-100S 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. With a nominal 375 mm stroke, the usable extend range is 275-375 mm, allowing precise field tuning without swapping the actuator. 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 SAUJ50X375-100S, which retains the same bore, stroke, force, port, and FA/LB mounting. The SAUJ upgrades to current CMSG/DMSG/EMSG sensors, whereas this legacy unit uses CS1-B/DS1-B switches. The stop screw sets the end position but is not a load lock; use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ50X375-100S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X375-100S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X375-100S |
| Bore size | Ø50 mm |
| Stroke | 375 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 SAUJ50X375-100S 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 SAUJ50X375-100S 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 SUJ50X375-100S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×375 | 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 SUJ50X375-100S Is Used
Variable Depth Boring
Machine tools requiring field-tuned extend limits can dial in the stroke from 375 mm down to 275 mm on-site to accommodate varying material thicknesses without changing actuators.
Adjustable Flap Folders
Packaging lines handling fluctuating carton dimensions use the 100 mm external stop screw to precisely set the extend endpoint for each box size on the fly.
Tunable Reject Arms
Sortation conveyors utilize the adjustable stroke to alter the pusher extension distance, safely ejecting products of varying widths off the belt.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X375-100S with the SAUJ50X375-100S
To replace the discontinued SUJ50X375-100S, order the direct replacement SAUJ50X375-100S, matching the 50 mm bore, 375 mm stroke, 100 mm adjust window, and 1/4" port. Choose the 100 mm adjust window if you need to trim the extend stroke on-site from 375 mm down to 275 mm. Mounting is compatible with AirTAC SC series FA and LB brackets. Because this unit has the -S magnet, upgrade your sensing to CMSG/DMSG/EMSG switches (the SUJ used legacy CS1-B/DS1-B). At a 375 mm stroke, use external guides to prevent rod bending and manage side loads. The stop screw sets end position only; add an external rod lock for load holding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X375-100S
- ✓ 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 SUJ50X375-100S FAQ
Yes, the SUJ50X375-100S is discontinued. The direct replacement is the SAUJ50X375-100S, which matches the 50 mm bore, 375 mm stroke, 100 mm adjust window, 1/4" port, and FA/LB mounting. You must upgrade your sensors from the legacy CS1-B/DS1-B to the current CMSG/DMSG/EMSG switches.
The external stop screw window is 100 mm, allowing you to trim the nominal 375 mm extend stroke down to 275 mm on-site. The stop sets end position only and does not lock the load.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ50X375-100S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ50X375-100S replacement — usually within 7-8 hours.