This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ50X175-75, 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 SUJ50X175-75
The AirTAC SUJ Adjustable Cylinder SUJ50X175-75 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 SAUJ50X175-75, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke175 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X175-75
- 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 SUJ50X175-75
The AirTAC SUJ50X175-75 is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 75 mm on-site, yielding a usable 100-175 mm stroke from the 175 mm nominal maximum. The extruded aluminum profile barrel is more compact than a standard cylinder of the same bore. This specific SKU has no magnet and cannot accept a sensing switch. It operates at 30-800 mm/s, features a 1/4" port, and includes 21 mm adjustable air cushions at each end.
This discontinued model is replaced direct by the SAUJ50X175-75, which matches the 50 mm bore, 175 mm stroke, M16x1.5 rod thread, and FA/LB mounting. The SAUJ upgrade primarily brings compatibility with current CMSG/DMSG/EMSG sensors, whereas this legacy unit used CS1-B/DS1-B switches.
Airtac SUJ Adjustable Cylinder SUJ50X175-75 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X175-75 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X175-75 |
| 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 SAUJ50X175-75 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 SAUJ50X175-75 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 SUJ50X175-75
| 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 SUJ50X175-75 Is Used
Variable Pitch Sorting
Tuning the extend stroke on-site by up to 75 mm allows a sorting diverter to adapt to varying product lengths without swapping out the entire actuator.
Adjustable Feed Stops
Trimming the 175 mm nominal stroke down to 100 mm provides a precise mechanical stop for feeding different pallet widths on a packaging line.
Variable Height Indexing
Field-adjusting the extend endpoint lets a lifting mechanism index parts at varying heights before triggering the next machine cycle.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X175-75 with the SAUJ50X175-75
To replace the discontinued SUJ50X175-75, select the direct replacement SAUJ50X175-75, which preserves the 50 mm bore, 175 mm maximum stroke, 75 mm adjust window, 1/4" port, and FA/LB mounting. Choose the 75 mm adjust window when you need significant on-site extend trimming from 175 mm down to 100 mm without changing the cylinder body. Note that this non-magnetic SKU cannot take sensors; if position detection is needed, move to an SAUJ-S model and use current CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B. The external stop screw sets the end position but is not a load lock; for held loads, add an external rod lock or pilot-operated check valve. Because the stroke is 175 mm, verify side-load alignment to prevent rod binding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X175-75
- ✓ 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 SUJ50X175-75 FAQ
Yes, the SUJ50X175-75 is discontinued. The direct replacement is the SAUJ50X175-75, which matches the 50 mm bore, 175 mm stroke, 75 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.
The external stop screw window is 75 mm, allowing you to shorten the 175 mm nominal extend stroke down to 100 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ50X175-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ50X175-75 replacement — usually within 7-8 hours.