This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUJ50X175-30S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUJ50X175-30S 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 SUJ50X175-30S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X175-30S 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 SAUJ50X175-30S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke175 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X175-30S
About the Airtac SUJ Adjustable Cylinder SUJ50X175-30S
The AirTAC SUJ50X175-30S is a double-acting single-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 30 mm on-site, yielding a usable 145-175 mm extend window from the 175 mm nominal maximum. The extruded aluminum profile barrel is notably shorter than a standard cylinder of the same bore. At 0.5 MPa it delivers 982 N push and 825 N pull force through a 1/4" port, peaking at 1767 N push at 0.9 MPa. This unit includes a built-in piston magnet for position sensing.
This SUJ model is discontinued; the exact drop-in replacement is the SAUJ50X175-30S, which preserves the 50 mm bore, 175 mm stroke, 30 mm adjust window, force, and FA/LB mounting. The SAUJ upgrades to current CMSG/DMSG/EMSG sensors, whereas this legacy unit uses CS1-B/DS1-B switches. For sizing, a safe working load is roughly 589 N (about 60% of the 982 N push at 0.5 MPa), translating to a vertical lift capacity of about 50 kg with a 2:1 margin. Remember 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 SUJ50X175-30S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X175-30S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X175-30S |
| 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 SAUJ50X175-30S 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 SAUJ50X175-30S 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 SUJ50X175-30S
| 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 SUJ50X175-30S Is Used
Variable Pitch Indexing
Dialing the extend stroke by up to 30 mm on-site allows a single assembly station to push parts at varying pitches without swapping the entire cylinder.
Adjustable Transfer Stops
Trimming the extend stroke on the fly lets a transfer line accommodate different package lengths precisely at the end of the stroke.
Variable Depth Sealing
Fine-tuning the extend end position provides exact sealing depth for varying container sizes directly at the machine, avoiding mechanical spacers.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X175-30S with the SAUJ50X175-30S
To replace the discontinued SUJ50X175-30S, order the drop-in SAUJ50X175-30S, matching the 50 mm bore, 175 mm nominal stroke, 30 mm adjust window, and 1/4" port. If resizing, neighboring bores offer different forces at 0.5 MPa: the 40 mm bore provides 628 N push, while the 63 mm bore provides 1559 N push. Select the 30 mm adjust window when you need on-site extend trimming between 145 and 175 mm. Mounting uses Basic, FA, and LB brackets compatible with AirTAC SC series parts. Because this is the -S variant, you must migrate from legacy CS1-B/DS1-B sensors to the current CMSG/DMSG/EMSG switches on the SAUJ. For strokes of 300 mm or longer, verify side-load limits to prevent rod binding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X175-30S
- ✓ 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 SUJ50X175-30S FAQ
Yes, the SUJ50X175-30S is discontinued. The exact drop-in replacement is the SAUJ50X175-30S, which matches the 50 mm bore, 175 mm stroke, 30 mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ also offers the SAUF built-in-valve variant the SU line lacked.
The 30 mm external stop screw shortens the extend stroke on-site, giving a usable 145-175 mm window. Force ratings at the 1/4" port are 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and 1767 N push at 0.9 MPa. The stop sets end position only and is not a load lock.
Related AirTAC SAU Cylinders
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