This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD80X550S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD80X550S 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 SUD80X550S
The AirTAC Airtac SUD Series Double Rod Cylinder SUD80X550S is a double-acting profile-type standard cylinder with a Ø80mm bore and 550mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUD80X550S, which matches its bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke550 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUD80X550S
About the Airtac SUD Series Double Rod Cylinder SUD80X550S
The AirTAC SUD80X550S is a double-acting, double-rod profile cylinder featuring an extruded aluminium barrel and a 25 mm piston rod exiting both ends. Because both faces use the rod-side area, push and pull force are equal at 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. This model is discontinued; the exact drop-in replacement is the SAUD80X550S, retaining the 80 mm bore, 550 mm stroke, 3/8" port, and FA/LB mounting. The rear rod provides an anti-rotation benefit and can carry a sensor cam to drive two tools simultaneously.
For sizing, the safe working load is approximately 1361 N (60% of the 0.5 MPa force), yielding a vertical lift capacity of about 116 kg with a 2:1 margin. The built-in magnet (-S) supports legacy CS1-B/DS1-B switches, whereas the SAUD replacement uses current CMSG/DMSG/EMSG sensors. A plain cylinder does not hold loads without live air; the 28 mm adjustable cushions only decelerate near stroke end, so use an external rod lock for held loads. At 550 mm, external guides are recommended to prevent rod bending.
Airtac SUD Series Double Rod Cylinder SUD80X550S Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD80X550S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD80X550S |
| Bore size | Ø80 mm |
| Stroke | 550 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 SAUD80X550S 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 SAUD80X550S 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 SUD80X550S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×550 | 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 SUD80X550S Is Used
Dual-Tool Machining
Drives two opposing workstations simultaneously using both rod ends, ensuring perfectly synchronized part transfer without requiring a second cylinder.
Anti-Rotation Transfer
The twin-rod architecture prevents mechanical twisting during horizontal product pushing on conveyor lines, maintaining precise alignment.
Guided Vertical Lift
Lifts loads up to 116 kg vertically with equal force both ways, using the extra rod extension to mount external linear guides for heavy handling.
Replacing the Airtac SUD Series Double Rod Cylinder SUD80X550S with the SAUD80X550S
To replace the discontinued SUD80X550S, order the SAUD80X550S drop-in, which matches the 80 mm bore, 550 mm stroke, M20x1.5 rod thread, and 3/8" port. Size both directions by checking neighbouring bores to ensure the equal-both-ways force (2268 N @0.5 MPa) fits your system. Choose a double-rod cylinder when you need anti-rotation control or must drive two tools from one piston. Mounting is limited to Basic, FA, and LB (SC series only). For the -S magnet, change legacy CS1-B/DS1-B sensors to CMSG/DMSG/EMSG on the SAUD. Because the 550 mm stroke exceeds 300 mm, add external guides to manage side-load and rod-bending risks.
Replacement checklist
- ✓ Same bore / stroke → SAUD80X550S
- ✓ 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 SUD80X550S FAQ
Yes, the SUD80X550S is discontinued. The exact drop-in replacement is the SAUD80X550S, which matches the 80 mm bore, 550 mm stroke, 3/8" port, and FA/LB mounting. You must upgrade your sensors from legacy CS1-B/DS1-B to CMSG/DMSG/EMSG.
The 3/8" ported 80 mm bore provides equal force both ways: 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. The safe working load is about 1361 N. The 28 mm cushions decelerate motion but do not hold loads without live air.
Related AirTAC SAU Cylinders
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