This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ50X175-40S, 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 SUJ50X175-40S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X175-40S is a double-acting profile-type standard cylinder with a Ø50mm bore and 175mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ50X175-40S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke175 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X175-40S
- 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 SUJ50X175-40S
The AirTAC SUJ50X175-40S is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 40 mm on-site, yielding a usable 135-175 mm extend window from the 175 mm nominal maximum. This discontinued model is fully replaced by the SAUJ50X175-40S.
The SAUJ50X175-40S direct keeps the exact bore, stroke, force, and SC-series FA/LB mounting, but upgrades sensing from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches. The stop screw sets end position only; it is not a load lock, so use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ50X175-40S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X175-40S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X175-40S |
| Bore size | Ø50 mm |
| Stroke | 175 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 SAUJ50X175-40S 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 SAUJ50X175-40S 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 SUJ50X175-40S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×175 | 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 SUJ50X175-40S Is Used
Variable Depth Drilling
Trimming the extend stroke by up to 40 mm on-site allows precise control of drill bit feed depth without swapping entire actuators.
Adjustable Diverter Gate
Field-tuning the 135-175 mm stroke window lets operators alter the gate extension to accommodate varying package widths on the line.
Variable Height Sealing
The external stop screw provides quick on-site adjustment of the sealing head extension for different carton profiles.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X175-40S with the SAUJ50X175-40S
To replace the discontinued SUJ50X175-40S, specify SAUJ50X175-40S for an direct match on bore, stroke, 40 mm adjust window, 1/4" port, and FA/LB mounting. Because this unit has the -S magnet, swap legacy CS1-B/DS1-B sensors for CMSG/DMSG/EMSG switches on the SAUJ. Choose the 40 mm adjust window when you need precise 135-175 mm field tuning that beats adding an external stop to a fixed SAU. For this 175 mm stroke, side-load is minimal, but ensure guide alignment to prevent rod binding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X175-40S
- ✓ 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 SUJ50X175-40S FAQ
Yes, the SUJ50X175-40S is discontinued. The direct replacement is the SAUJ50X175-40S, which matches the 50 mm bore, 175 mm stroke, 40 mm adjust window, 1/4" port, and FA/LB mounting. You only need to upgrade the -S magnet sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
The external stop screw allows you to trim the extend stroke by up to 40 mm on-site, creating a usable 135-175 mm extend window from the 175 mm nominal maximum. The stop sets end position only and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ50X175-40S
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