This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD50X80N — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD50X80N 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 SUD50X80N
The AirTAC Airtac SUD Series Double Rod Cylinder SUD50X80N 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 SAUD50X80N, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke80 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUD50X80N
About the Airtac SUD Series Double Rod Cylinder SUD50X80N
The AirTAC SUD50X80N is a discontinued double-acting double-rod profile cylinder featuring a 50mm bore, 80mm 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 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. The exact drop-in replacement is the SAUD50X80N, which matches the bore, stroke, force, port, and FA/LB mounting while upgrading to current CMSG/DMSG/EMSG sensors. This NBR-sealed unit operates from -20 to +70 C and cannot hold a load without live air.
The double-rod geometry prevents piston rotation and allows the back rod to drive a second tool simultaneously. With a safe working load of roughly 495 N (60% of the 825 N @0.5 MPa figure), it provides a vertical lift capacity of about 42 kg with a 2:1 margin. Note that this specific SKU lacks a magnet and cannot accept a magnetic switch. The adjustable 21mm air cushions only decelerate the piston near stroke end; they do not function as a brake, so an external rod lock is required for held loads.
Airtac SUD Series Double Rod Cylinder SUD50X80N Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD50X80N |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD50X80N |
| 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 SAUD50X80N 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 SAUD50X80N 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 SUD50X80N
| 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 SUD50X80N Is Used
Dual-Tool Machining Station
Drives two opposing machining heads simultaneously using both rod ends, ensuring perfectly synchronized clamping and milling without rotation.
Anti-Rotation Transfer Pusher
Transfers workpieces between conveyor belts with high lateral stability, using the double-rod profile to prevent the piston from twisting under offset loads.
Equal-Force Divert Gate
Actuates a diverting gate where identical push and pull force is required in both directions to reliably sort packages across parallel lanes.
Replacing the Airtac SUD Series Double Rod Cylinder SUD50X80N with the SAUD50X80N
To replace the discontinued SUD50X80N, order the drop-in SAUD50X80N, which preserves the 50mm bore, 80mm stroke, 1/4 inch port, and FA/LB mounting. Size both directions by checking the equal-both-ways force against your load, stepping to neighbour bores if more output is needed. Choose a double-rod cylinder when you need anti-rotation stability or want to drive two tools from one piston. If upgrading, note that the SAUD uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches. Because this SKU lacks a magnet (-N), it cannot take sensors; if sensing is required, select a magnet-equipped SAUD model. For strokes >=300mm, verify side-load limits to prevent guide wear. Finally, remember the cushions only decelerate; use an external rod lock for load holding.
Replacement checklist
- ✓ Same bore / stroke → SAUD50X80N
- ✓ 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 SUD50X80N FAQ
Yes, the SUD50X80N is discontinued. The exact drop-in replacement is the SAUD50X80N, which offers the same 50mm bore, 80mm stroke, equal both-ways force, 1/4 inch port, and FA/LB mounting. The SAUD also supports current CMSG/DMSG/EMSG sensors and offers the SAUF built-in-valve variant.
Because it is a double-rod cylinder, force is equal both ways: 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. The air port is 1/4 inch. It provides a safe working load of roughly 495 N and a vertical lift capacity of about 42 kg with a 2:1 margin.
Related AirTAC SAU Cylinders
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