This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUJ50X175-75S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUJ50X175-75S in place of this model. 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 SUJ50X175-75S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X175-75S 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 drop-in replacement is the SAUJ50X175-75S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke175 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X175-75S
About the Airtac SUJ Adjustable Cylinder SUJ50X175-75S
The AirTAC SUJ50X175-75S is a discontinued double-acting single-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 extend window from the 175 mm nominal maximum. The 50 mm bore delivers 982 N push and 825 N pull at 0.5 MPa (1374 N at 0.7 MPa, 1767 N at 0.9 MPa), operating at 30-800 mm/s through a 1/4" port.
Because this SUJ model is end-of-life, the exact drop-in replacement is the SAUJ50X175-75S, retaining the same bore, stroke, force, and FA/LB mounting. The SAUJ upgrade switches from legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors. For sizing, a safe working load is roughly 589 N (60% of the 0.5 MPa push), translating to a 50 kg vertical lift with a 2:1 margin. Note 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 SUJ50X175-75S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X175-75S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X175-75S |
| 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 SAUJ50X175-75S 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 SAUJ50X175-75S produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SUJ Adjustable Cylinder SUJ50X175-75S
| 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 SUJ50X175-75S Is Used
Variable Depth Diving
Trimming the extend stroke on-site by up to 75 mm allows precise depth control for pressing or diving operations without swapping the entire cylinder.
Adjustable Forming Stops
The external stop screw lets operators quickly change the 100-175 mm extend endpoint for short-run forming tasks requiring different material lengths.
Dynamic Sorting Diverters
Field-tuning the stroke window accommodates varying package sizes on a conveyor line, ensuring the diverter hits the exact required extension.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X175-75S with the SAUJ50X175-75S
To replace the discontinued SUJ50X175-75S, order the drop-in SAUJ50X175-75S, which matches the 50 mm bore, 175 mm nominal stroke, 1/4" port, and FA/LB mounting. If resizing, neighbouring bores offer different forces at 0.5 MPa: the 40 mm bore gives 628 N push, while the 63 mm bore provides 1559 N push. Choose the 75 mm adjust window when you need flexible 100-175 mm extend lengths on-site; for smaller trims, select a 50 or 30 mm window. Because this unit has the -S magnet, swap legacy CS1-B/DS1-B sensors for CMSG/DMSG/EMSG switches on the SAUJ. For strokes of 300 mm or longer, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X175-75S
- ✓ 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 SUJ50X175-75S FAQ
Yes, the SUJ50X175-75S is discontinued. The exact drop-in replacement is the SAUJ50X175-75S, which shares the same 50 mm bore, 175 mm stroke, 1/4" port, and FA/LB mounting. You will need to upgrade the sensors from legacy CS1-B/DS1-B to the current CMSG/DMSG/EMSG series.
The 50 mm bore provides 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and 1767 N at 0.9 MPa. The external stop screw offers a 75 mm adjust window, meaning you can shorten the 175 mm nominal extend stroke down to 100 mm on-site. The stop sets end position only and does not lock the load.
Related AirTAC SAU Cylinders
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