This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD80X50STC — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD80X50STC 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 SUD80X50STC
The AirTAC Airtac SUD Series Double Rod Cylinder SUD80X50STC is a double-acting profile-type standard cylinder with a Ø80mm bore and 50mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUD80X50STC, which matches its bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke50 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUD80X50STC
About the Airtac SUD Series Double Rod Cylinder SUD80X50STC
The AirTAC SUD80X50STC is a double-acting, double-rod profile cylinder featuring a 80mm bore and 50mm stroke. Because a rod exits both ends on one piston, both faces use the rod-side area, making push and pull force equal at 2268N @0.5MPa, 3175N @0.7MPa, and 4082N @0.9MPa. The extruded aluminium 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 SAUD80X50STC, retaining the same 3/8 port, M20x1.5 rod thread, and 28mm adjustable cushion.
With 2268N of force @0.5MPa, the computed safe working load is roughly 1361N (about 60%), translating to a vertical lift capacity of 116kg with a 2:1 margin. The double-rod design prevents piston rotation 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 loads on air loss; the air cushion only decelerates near stroke end, so use an external rod lock for held loads. The TC mounting interface uses an SC-series accessory.
Airtac SUD Series Double Rod Cylinder SUD80X50STC Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD80X50STC |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD80X50STC |
| Bore size | Ø80 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| Port size | 3/8" |
| Rod thread | M20×1.5 |
| 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, 28 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUD80X50STC carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAUD80X50STC 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 SUD80X50STC
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×50 | 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 SUD80X50STC Is Used
Dual-Tool Machining Station
Drives two opposing tools simultaneously from one piston, utilizing the equal both-ways force to machine parts on both ends without requiring a second actuator.
Anti-Rotation Transfer Gate
Uses the twin exiting rods to prevent piston rotation during lateral transfers on a conveyor line, ensuring the gate mechanism remains perfectly aligned.
Symmetric Push-Pull Divertor
Employs the back rod to carry a sensor cam for precise position feedback while applying identical push and pull forces to divert packages symmetrically.
Replacing the Airtac SUD Series Double Rod Cylinder SUD80X50STC with the SAUD80X50STC
To replace the discontinued SUD80X50STC, install the drop-in SAUD80X50STC which matches the 80mm bore, 50mm stroke, equal both-ways force, 3/8 port, and FA/LB mounting. When sizing both ways, verify force against neighbouring bores: the 63mm bore yields 1402N @0.5MPa, while the 100mm bore yields 3681N @0.5MPa. Choose a double-rod cylinder when you need anti-rotation stability or must drive two tools simultaneously. If your SUD used the -S magnet for CS1-B/DS1-B switches, upgrade to CMSG/DMSG/EMSG sensors for the SAUD. For this 50mm stroke, side-load is minimal, but for stroke lengths >=300mm, ensure guide alignment to prevent rod binding.
Replacement checklist
- ✓ Same bore / stroke → SAUD80X50STC
- ✓ 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 SUD80X50STC FAQ
Yes, the SUD80X50STC is discontinued. The exact drop-in replacement is the SAUD80X50STC, which matches the 80mm bore, 50mm stroke, 3/8 port, and FA/LB mounting. You must upgrade any legacy CS1-B/DS1-B sensors to the current CMSG/DMSG/EMSG sensors used by the SAUD.
Because it is a double-rod cylinder, force is equal both ways: 2268N @0.5MPa, 3175N @0.7MPa, and 4082N @0.9MPa. The 80mm bore dictates a fixed 3/8 inch port (default PT thread). The piston rod is 25mm with an M20x1.5 thread, and speed ranges from 30-800mm/s.
Related AirTAC SAU Cylinders
Request a Quote for the SAUD80X50STC
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