This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD50X265S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD50X265S 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 SUD Series Double Rod Cylinder SUD50X265S
The AirTAC Airtac SUD Series Double Rod Cylinder SUD50X265S is a double-acting profile-type standard cylinder with a Ø50mm bore and 265mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUD50X265S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke265 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUD50X265S
About the Airtac SUD Series Double Rod Cylinder SUD50X265S
The AirTAC SUD50X265S is a double-acting, double-rod profile cylinder featuring a 50mm bore and 265mm stroke. Because a rod exits both ends on one piston, both faces use the rod-side area, meaning push and pull force are equal both ways at 825N @0.5 MPa, 1154N @0.7 MPa, and 1484N @0.9 MPa. The extruded aluminium profile barrel is more compact than an ISO 15552 cylinder of the same bore. This SUD50X265S model is discontinued and the exact drop-in replacement is the SAUD50X265S, keeping the same 1/4" port, M16x1.5 rod thread, and FA/LB mounting.
With a 0.5 MPa operating pressure, the computed safe working load is roughly 495N (about 60% of the 825N figure), allowing a vertical lift of approximately 42kg with a 2:1 margin. The double-rod design provides anti-rotation stability and allows the back rod to carry a sensor cam for legacy CS1-B/DS1-B switches (the SAUD replacement uses current CMSG/DMSG/EMSG sensors). A plain cylinder does not hold its load on air loss; the 21mm adjustable air cushion only decelerates near stroke end, so an external rod lock is needed for held loads.
Airtac SUD Series Double Rod Cylinder SUD50X265S Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD50X265S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD50X265S |
| Bore size | Ø50 mm |
| Stroke | 265 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 SAUD50X265S 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 SAUD50X265S 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 SUD Series Double Rod Cylinder SUD50X265S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×265 | 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 SUD Series Double Rod Cylinder SUD50X265S Is Used
Dual-Tool Machining Station
Drives two opposing tools simultaneously from one piston, utilizing the equal both ways force to maintain balanced cutting pressure on both ends.
Anti-Rotation Transfer Gate
Uses the double-rod geometry to prevent mechanical rotation during traverse, ensuring a guided transfer of parts between conveyor belts without binding.
Symmetric Push-Pull Diverter
Employs the back rod to carry a sensor cam, triggering legacy CS1-B/DS1-B switches for precise position feedback while diverting packages equally in both directions.
Replacing the Airtac SUD Series Double Rod Cylinder SUD50X265S with the SAUD50X265S
To replace the discontinued SUD50X265S, order the drop-in SAUD50X265S which matches the 50mm bore, 265mm stroke, equal both ways force, 1/4" port, and FA/LB mounting. Because force is equal both ways, size it by checking neighbour bores: the 40mm bore yields 528/739/950N, while the 63mm bore yields 1402/1962/2523N. A double rod is right when you need anti-rotation stability or want to drive two tools simultaneously. The -S suffix indicates a piston magnet; when upgrading to SAUD, change legacy CS1-B/DS1-B sensors to CMSG/DMSG/EMSG. For this 265mm stroke (which is >=300mm line), ensure the side-load is minimized to prevent guide wear.
Replacement checklist
- ✓ Same bore / stroke → SAUD50X265S
- ✓ 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 SUD Series Double Rod Cylinder SUD50X265S FAQ
Yes, the SUD50X265S is discontinued. The exact drop-in replacement is the SAUD50X265S, which matches the 50mm bore, 265mm stroke, equal both ways force, 1/4" port, and FA/LB mounting. You must upgrade the sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG.
The double-rod design means force is equal both ways: 825N @0.5 MPa, 1154N @0.7 MPa, and 1484N @0.9 MPa. Operating speed is 30-800 mm/s. The 1/4" port and 21mm adjustable cushion at each end manage deceleration, but an external rod lock is required for load holding.
Related AirTAC SAU Cylinders
Request a Quote for the SAUD50X265S
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