This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD80X275S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD80X275S 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 SUD80X275S
The AirTAC Airtac SUD Series Double Rod Cylinder SUD80X275S is a double-acting profile-type standard cylinder with a Ø80mm bore and 275mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUD80X275S, which matches its bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke275 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUD80X275S
About the Airtac SUD Series Double Rod Cylinder SUD80X275S
The AirTAC SUD80X275S is a discontinued double-acting double-rod profile cylinder featuring a 80mm bore, 275mm stroke, and a 3/8 inch port. A rod exits both ends on one piston, meaning both faces use the rod-side area to deliver equal force in both directions (2268 N at 0.5 MPa, 3175 N at 0.7 MPa, 4082 N at 0.9 MPa). The extruded aluminium profile barrel is shorter than an ISO 15552 cylinder of the same bore. As this model is end-of-life, the exact drop-in replacement is the SAUD80X275S, which retains the same bore, stroke, force, port, and FA/LB mounting.
Because the second rod drives a sensor cam and resists rotation, the SUD80X275S offers built-in anti-rotation benefits. With a 2268 N force at 0.5 MPa, the computed safe working load is roughly 1361 N (about 60 percent of the 0.5 MPa figure), translating to a vertical lift capacity of approximately 116 kg with a 2:1 margin. This unit includes a piston magnet for legacy CS1-B/DS1-B switches; the SAUD replacement upgrades to current CMSG/DMSG/EMSG sensors. Note that the air cushion only decelerates near stroke end—it is not a lock—so use an external rod lock for held loads.
Airtac SUD Series Double Rod Cylinder SUD80X275S Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD80X275S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD80X275S |
| Bore size | Ø80 mm |
| Stroke | 275 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 SAUD80X275S 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 SAUD80X275S 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 SUD80X275S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×275 | 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 SUD80X275S Is Used
Dual-Tool Machining Station
Uses the twin rods to drive two opposing machining heads simultaneously with equal 2268 N force at 0.5 MPa, ensuring perfectly balanced cutting pressure.
Anti-Rotation Transfer Gate
The double-rod construction prevents mechanical twist during high-speed part diversion, maintaining precise 30-800 mm/s transfer speeds without binding.
Symmetric Lift Fixture
Drives a vertical lifting platform where the equal both-ways force and rear rod sensor cam provide stable positioning and accurate end-of-travel feedback.
Replacing the Airtac SUD Series Double Rod Cylinder SUD80X275S with the SAUD80X275S
To replace the discontinued SUD80X275S, select the SAUD80X275S drop-in: it matches the 80mm bore, 275mm stroke, 3178 inch port, equal-both-ways force, and FA/LB mounting. When sizing both ways, verify force needs against neighbouring bores (63mm or 100mm) but rely on the 80mm equal push/pull ratings. A double rod is right when you need anti-rotation, or when the back rod must carry a sensor cam. For the -S sensor suffix, change legacy CS1-B/DS1-B switches to CMSG/DMSG/EMSG on the SAUD. For this 275mm stroke (over 300mm limit note), ensure adequate side-load guidance to prevent rod binding.
Replacement checklist
- ✓ Same bore / stroke → SAUD80X275S
- ✓ 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 SUD80X275S FAQ
Yes, the SUD80X275S is discontinued. The exact drop-in replacement is the SAUD80X275S, which shares the same 80mm bore, 275mm stroke, 3/8 inch port, and equal-both-ways force. You only need to upgrade the legacy CS1-B/DS1-B sensors to the current CMSG/DMSG/EMSG switches.
Because it is a double-rod cylinder, force is equal both ways: 2268 N at 0.5 MPa, 3175 N at 0.7 MPa, and 4082 N at 0.9 MPa. The bore dictates a fixed 3/8 inch port. The safe working load is approximately 1361 N, allowing a 116 kg vertical lift with a 2:1 margin.
Related AirTAC SAU Cylinders
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