This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD80X250S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD80X250S 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 SUD80X250S
The AirTAC Airtac SUD Series Double Rod Cylinder SUD80X250S is a double-acting profile-type standard cylinder with a Ø80mm bore and 250mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUD80X250S, which matches its bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke250 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUD80X250S
About the Airtac SUD Series Double Rod Cylinder SUD80X250S
The AirTAC SUD80X250S is a discontinued double-acting double-rod profile cylinder featuring a 80mm bore and 250mm stroke. A rod exits both ends on one piston, meaning both faces use the rod-side area and push/pull force is equal both ways at 2268N @0.5MPa, 3175N @0.7MPa, and 4082N @0.9MPa. It has a 25mm rod, M20x1.5 rod thread, 28mm adjustable cushion, and a 3/8" port. The exact drop-in replacement is the SAUD80X250S, which matches the bore, stroke, force, and mounting.
This double-rod design prevents piston rotation and allows the back rod to drive a second tool or carry a sensor cam. For sizing, the 2268N @0.5MPa force yields a safe working load of about 1361N and a vertical lift capacity of roughly 116kg with a 2:1 margin. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches; upgrading to the SAUD requires current CMSG/DMSG/EMSG sensors. Note that air cushions only decelerate near stroke end, so an external rod lock is needed to hold loads on air loss.
Airtac SUD Series Double Rod Cylinder SUD80X250S Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD80X250S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD80X250S |
| Bore size | Ø80 mm |
| Stroke | 250 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 SAUD80X250S 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 SAUD80X250S 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 SUD80X250S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×250 | 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 SUD80X250S Is Used
Dual-Tool Machining Station
Uses the equal both-ways force to drive a machining tool on the front rod while a secondary ejector pin operates on the back rod, eliminating rotational play.
Anti-Rotation Transfer Gate
Deploys a synchronized diverter arm where the double-rod profile prevents piston twisting during high-speed lateral transfers across the belt.
Symmetric Carton Pusher
Pushes packaging materials from both ends simultaneously, relying on the 2268N @0.5MPa equal force to index corrugated cartons without skewing.
Replacing the Airtac SUD Series Double Rod Cylinder SUD80X250S with the SAUD80X250S
To replace the discontinued SUD80X250S, order the drop-in SAUD80X250S, which matches the 80mm bore, 250mm stroke, 3/8" port, and FA/LB mounting. When sizing both ways, verify the equal-both-ways force fits your load, or step to neighbouring bores (63mm or 100mm) for different outputs. A double rod is right when you need anti-rotation or a back rod for a sensor cam. For the -S sensor change, swap legacy CS1-B/DS1-B switches for CMSG/DMSG/EMSG sensors on the SAUD. For this 250mm stroke, ensure the side-load line stays within the guide tolerance. A plain cylinder drifts on air loss, so use an external rod lock for held loads.
Replacement checklist
- ✓ Same bore / stroke → SAUD80X250S
- ✓ 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 SUD80X250S FAQ
Yes, the SUD80X250S is discontinued. The exact drop-in replacement is the SAUD80X250S, which matches the 80mm bore, 250mm stroke, 3/8" port, and FA/LB mounting. You will need to upgrade the -S magnet sensors from legacy CS1-B/DS1-B to the current CMSG/DMSG/EMSG.
Because it is a double-rod cylinder, force is equal both ways: 2268N @0.5MPa, 3175N @0.7MPa, and 4082N @0.9MPa. It operates at 30-800mm/s, has a 25mm rod, M20x1.5 thread, and 28mm adjustable cushions.
Related AirTAC SAU Cylinders
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