This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD40X80 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD40X80 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 SUD40X80
The AirTAC Airtac SUD Series Double Rod Cylinder SUD40X80 is a double-acting profile-type standard cylinder with a Ø40mm bore and 80mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUD40X80, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke80 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUD40X80
About the Airtac SUD Series Double Rod Cylinder SUD40X80
The AirTAC SUD40X80 is a double-acting, double-rod profile cylinder with a 40mm bore and 80mm stroke. Because a rod exits both ends, push and pull force are equal at 528N @0.5MPa, 739N @0.7MPa, and 950N @0.9MPa. This SKU has no magnet and cannot accept a sensor. This discontinued model is fully replaced by the SAUD40X80 drop-in, retaining the 1/4" port, M12x1.25 rod thread, and 21mm cushions.
The SAUD upgrade switches to current CMSG/DMSG/EMSG sensors from the legacy CS1-B/DS1-B, and adds an SAUF built-in-valve variant. The dual-rod design prevents piston rotation and can drive two tools simultaneously. For buyers, the safe working load is roughly 317N (60% of the 528N @0.5MPa figure), yielding a 27kg vertical lift capacity with a 2:1 safety margin.
Airtac SUD Series Double Rod Cylinder SUD40X80 Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD40X80 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD40X80 |
| Bore size | Ø40 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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 SAUD40X80 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The SAUD40X80 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 SUD40X80
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | 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 SUD40X80 Is Used
Dual-Tool Pressing
Drives two independent tooling heads simultaneously from opposite rod ends, ensuring perfectly synchronized pressing operations without phase delay.
Anti-Rotation Transfer
Transfers parts across a conveyor belt with high lateral stability, using the twin rods to completely prevent piston twist during the extension cycle.
Symmetrical Ejection
Ejects molded widgets symmetrically from both sides of a fixture, balancing the ejection force to prevent part distortion or uneven wear.
Replacing the Airtac SUD Series Double Rod Cylinder SUD40X80 with the SAUD40X80
To replace the discontinued SUD40X80, specify the SAUD40X80 drop-in, which matches the 40mm bore, 80mm stroke, 528N equal-both-ways force, 1/4" port, and FA/LB mounting. If sizing both ways, the neighbouring 32mm bore yields 345N while the 50mm bore yields 825N @0.5MPa. Choose a double-rod cylinder when anti-rotation or driving two tools is required. Since this SKU lacks a magnet, it cannot take sensors; the SAUD uses CMSG/DMSG/EMSG switches. For this 80mm stroke, side-load is minimal, but for strokes >=300mm ensure guide alignment to prevent binding. Air cushions only decelerate; use an external rod lock for held loads.
Replacement checklist
- ✓ Same bore / stroke → SAUD40X80
- ✓ 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 SUD40X80 FAQ
Yes, the SUD40X80 is discontinued. The exact drop-in replacement is the SAUD40X80, which matches the 40mm bore, 80mm stroke, 1/4" port, and FA/LB mounting.
Force is equal both ways at 528N @0.5MPa, 739N @0.7MPa, and 950N @0.9MPa. The 1/4" port and 16mm rod ensure identical push and pull values.
Request a Quote for the SAUD40X80
Send us the quantity and destination. We confirm price, stock and lead time on the SAUD40X80 replacement — usually within 7-8 hours.