This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD50X80 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD50X80 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 SUD50X80
The AirTAC Airtac SUD Series Double Rod Cylinder SUD50X80 is a double-acting profile-type standard cylinder with a Ø50mm bore and 80mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUD50X80, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke80 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUD50X80
About the Airtac SUD Series Double Rod Cylinder SUD50X80
The AirTAC SUD50X80 is a double-acting, double-rod profile cylinder where a rod exits both ends, ensuring push and pull force is equal both ways at 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. This discontinued model features a 50 mm bore, an 80 mm stroke, a 1/4 inch port, and an extruded aluminium barrel shorter than an ISO 15552 cylinder of the same bore. The exact drop-in replacement is the SAUD50X80, which matches the bore, stroke, force, port, and FA/LB mounting.
Because the rear rod can carry a sensor cam or drive two tools simultaneously, the design prevents rotation without external guides. This SKU lacks a magnet and cannot take a switch, but upgrading to the SAUD50X80 enables current CMSG/DMSG/EMSG sensors (this SUD used legacy CS1-B/DS1-B). For sizing, the safe working load is roughly 495 N (60 percent of the 825 N @0.5 MPa figure), allowing a vertical lift of about 42 kg with a 2:1 margin. Note that a plain cylinder drifts on air loss; the 21 mm adjustable air cushion only decelerates near stroke end, so use an external rod lock for held loads.
Airtac SUD Series Double Rod Cylinder SUD50X80 Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD50X80 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD50X80 |
| Bore size | Ø50 mm |
| Stroke | 80 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 SAUD50X80 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 SAUD50X80 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 SUD50X80
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×80 | 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 SUD50X80 Is Used
Dual-Tool Machining Station
Drives two opposing tools simultaneously from one piston, utilising the equal both-ways force to maintain perfectly balanced cutting or clamping pressure on both ends.
Anti-Rotation Transfer Gate
Uses the twin-rod architecture to prevent mechanical rotation during rapid part transfers across a conveyor, eliminating the need for external guide rails.
Compact Vertical Lift
Lifts roughly 42 kg of inventory with a 2:1 safety margin at 0.5 MPa, fitting a shorter profile body into tight warehouse automation spaces.
Replacing the Airtac SUD Series Double Rod Cylinder SUD50X80 with the SAUD50X80
To replace this discontinued SUD50X80, order the SAUD50X80 drop-in replacement, which shares the exact 50 mm bore, 80 mm stroke, 1/4 inch port, and FA/LB mounting. When sizing both ways, verify your force requirements against the equal both-ways output of 825 N @0.5 MPa, or step up to the 63 mm neighbour bore if more thrust is needed. Choose a double-rod cylinder when you need anti-rotation stability or must drive two tools from one piston. Because this specific SKU lacks a magnet, it cannot take a switch; if you need sensing, the SAUD upgrade uses current CMSG/DMSG/EMSG sensors instead of the old CS1-B/DS1-B. For any stroke length of 300 mm or greater, carefully manage side-load alignment to prevent premature seal wear. Remember that the air cushion only decelerates the piston; it does not hold the load on air loss, so install an external rod lock for vertical applications.
Replacement checklist
- ✓ Same bore / stroke → SAUD50X80
- ✓ 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 SUD50X80 FAQ
Yes, the SUD50X80 is discontinued. The exact drop-in replacement is the SAUD50X80, which matches the 50 mm bore, 80 mm stroke, 1/4 inch port, and FA/LB mounting. The SAUD also uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
Because it is a double-rod cylinder, the push and pull force is equal both ways: 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. The bore dictates a fixed 1/4 inch port size, the piston rod is 20 mm, and the rod-end thread is M16x1.5.
Request a Quote for the SAUD50X80
Send us the quantity and destination. We confirm price, stock and lead time on the SAUD50X80 replacement — usually within 7-8 hours.