This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ50X175-50, 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.
Airtac SUJ Adjustable Cylinder SUJ50X175-50
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X175-50 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 SAUJ50X175-50, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke175 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X175-50
- 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 SUJ50X175-50
The AirTAC SUJ50X175-50 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 125-175 mm stroke. The nominal 175 mm is the maximum. This bore features a 20 mm rod, M16x1.5 rod thread, and a 1/4" port.
This SUJ model is discontinued; the direct replacement is the SAUJ50X175-50, matching the bore, stroke, force, port, and FA/LB mounting. The SAUJ upgrades to current CMSG/DMSG/EMSG sensors, whereas this legacy unit used CS1-B/DS1-B switches. Note this non-magnet SKU cannot take a switch. 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 SUJ50X175-50 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X175-50 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X175-50 |
| 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 SAUJ50X175-50 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 SAUJ50X175-50 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 SUJ50X175-50
| 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 SUJ50X175-50 Is Used
Custom Stroke Ejection
Trimming the extend stroke by up to 50 mm on-site allows precise ejection of varied part sizes without machining a custom-length cylinder.
Variable Position Diverter
Field-tuning the 175 mm stroke down to 125 mm lets a diverter gate adapt to different conveyor lane widths on the factory floor.
Adjustable Sealing Press
Dialing in the end position with the external stop screw ensures correct sealing pressure for varying package heights.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X175-50 with the SAUJ50X175-50
To replace the discontinued SUJ50X175-50, order the SAUJ50X175-50 direct: it preserves the 50 mm bore, 175 mm max stroke, 50 mm adjust window, 1/4" port, and FA/LB mounting. Choose the 50 mm adjust window if you need to trim the extend stroke on-site by up to 50 mm; the stop screw sets end position but is not a lock. Because this is a non-magnet SKU, it cannot accept a sensor. For stroke lengths of 300 mm or greater, verify side-load limits to prevent rod binding. Mounting compatibility is with the AirTAC SC series only.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X175-50
- ✓ 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 SUJ50X175-50 FAQ
Yes, the SUJ50X175-50 is discontinued. The direct replacement is the SAUJ50X175-50, which matches the 50 mm bore, 175 mm stroke, 50 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.
This double-acting double-rod cylinder has a 50 mm adjust window, allowing you to shorten the 175 mm extend stroke down to 125 mm. The external stop sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ50X175-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ50X175-50 replacement — usually within 7-8 hours.