This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD50X300S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD50X300S 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 SUD50X300S
The AirTAC Airtac SUD Series Double Rod Cylinder SUD50X300S is a double-acting profile-type standard cylinder with a Ø50mm bore and 300mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUD50X300S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke300 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUD50X300S
About the Airtac SUD Series Double Rod Cylinder SUD50X300S
The AirTAC SUD50X300S is a double-acting, double-rod profile cylinder featuring a 50mm bore, 300mm stroke, and a 1/4 inch air port. Because a rod exits both ends on a single piston, both faces use the rod-side area, making push and pull force equal at 825N at 0.5MPa, 1154N at 0.7MPa, and 1484N at 0.9MPa. The extruded aluminum profile barrel is shorter than an ISO 15552 cylinder of the same bore. This SUD model is discontinued; the exact drop-in replacement is the SAUD50X300S, retaining the same bore, stroke, force, port, and FA/LB mounting.
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). Based on the 825N force at 0.5MPa, the safe working load is approximately 495N, yielding a vertical lift capacity of about 42kg with a 2:1 margin. Note that a plain cylinder does not hold loads on air loss; the air cushion only decelerates near stroke end, so an external rod lock is required for held loads.
Airtac SUD Series Double Rod Cylinder SUD50X300S Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD50X300S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD50X300S |
| Bore size | Ø50 mm |
| Stroke | 300 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 SAUD50X300S 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 SAUD50X300S 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 SUD50X300S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×300 | 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 SUD50X300S Is Used
Dual-Tool Machining Station
Drives two opposing machining heads simultaneously, utilizing the equal both ways force to ensure balanced material removal on both sides of a workpiece.
Anti-Rotation Transfer Arm
Moves parts across a conveyor belt with high torsional stability, using the double-rod geometry to prevent mechanical twist during rapid lateral transfers.
Synchronized Pallet Pusher
Pushes pallets from a storage lane onto an outbound line, relying on the back rod to carry a sensor cam for precise end-of-stroke positioning feedback.
Replacing the Airtac SUD Series Double Rod Cylinder SUD50X300S with the SAUD50X300S
To replace the discontinued SUD50X300S, specify the SAUD50X300S drop-in equivalent, which matches the 50mm bore, 300mm stroke, equal-both-ways force, 1/4 inch port, and FA/LB mounting. When sizing both ways, verify the 825N at 0.5MPa or 1154N at 0.7MPa output meets your push and pull requirements, or step to neighboring bores (63mm or 40mm) to adjust force. A double rod is the right choice when you need anti-rotation stability or want to drive two tools from one cylinder. Because this unit has a 300mm stroke, external guides are recommended to prevent rod bending under side loads. For the -S magnet option, upgrade from legacy CS1-B/DS1-B sensors to CMSG/DMSG/EMSG sensors on the SAUD.
Replacement checklist
- ✓ Same bore / stroke → SAUD50X300S
- ✓ 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 SUD50X300S FAQ
Yes, the SUD50X300S is discontinued. The exact drop-in replacement is the SAUD50X300S, which matches the 50mm bore, 300mm stroke, 1/4 inch port, and FA/LB mounting. You must upgrade the legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG sensors on the SAUD.
The SUD50X300S has a 1/4 inch air port and generates equal force both ways: 825N at 0.5MPa, 1154N at 0.7MPa, and 1484N at 0.9MPa. It does not quote a larger single-rod push value, as both faces use the rod-side area.
Related AirTAC SAU Cylinders
Request a Quote for the SAUD50X300S
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