This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ50X175-50S, 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 SUJ50X175-50S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X175-50S 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 SAUJ50X175-50S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke175 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X175-50S
- 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 SUJ50X175-50S
The AirTAC SUJ50X175-50S 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 extension out of the 175 mm nominal maximum. It features a 1/4" port, an M16x1.5 rod thread, and 21 mm adjustable air cushions at each end. This discontinued model is fully replaced by the direct replacement SAUJ50X175-50S, which retains the exact bore, stroke, force, port, and SC-series FA/LB mounting compatibility.
Because the stop screw only sets the end position, it is not a load lock; a plain cylinder drifts on air loss, so add an external rod lock for held loads. The SAUJ upgrade also introduces current CMSG/DMSG/EMSG sensors to replace this unit's legacy CS1-B/DS1-B switches, and the compact profile barrel remains shorter than an ISO 15552 cylinder of the same bore.
Airtac SUJ Adjustable Cylinder SUJ50X175-50S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X175-50S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X175-50S |
| 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 SAUJ50X175-50S 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 SAUJ50X175-50S 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 SUJ50X175-50S
| 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 SUJ50X175-50S Is Used
Variable Depth Dwell Stations
Trimming the extend stroke by up to 50 mm on-site allows operators to set precise bottoming depths for pressing or forming operations without swapping the entire cylinder.
Adjustable Package Diverters
The 125-175 mm usable extension window lets maintenance teams fine-tune diverter reach on the fly to accommodate varying carton widths on a single line.
Multi-Format Pallet Stops
Field tuning the end position provides flexible stop locations for different pallet depths, preventing hard mechanical crashes while accommodating profile space limits.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X175-50S with the SAUJ50X175-50S
To replace the discontinued SUJ50X175-50S, order the exact direct replacement SAUJ50X175-50S, which preserves the 175 mm stroke, 50 mm adjust window, 1/4" port, and FA/LB mounting. Choose the 50 mm adjust window if your fixture requires trimming the extend stroke by up to 50 mm on-site; the stop screw sets end position but is not a lock, so specify an external rod lock for suspended loads. Because this unit has the -S magnet, upgrade your legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors. For strokes of 300 mm or longer, verify your side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X175-50S
- ✓ 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 SUJ50X175-50S FAQ
Yes, the SUJ50X175-50S is discontinued. The direct replacement is the SAUJ50X175-50S, which matches the 50 mm bore, 175 mm stroke, 50 mm adjust window, 1/4" port, and FA/LB mounting. You must upgrade the 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 50 mm on-site, giving a usable 125-175 mm extension. The stop sets end position only and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ50X175-50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ50X175-50S replacement — usually within 7-8 hours.