This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUD80X280S, with the same bore, stroke, output force, port and mounting, so it fits the same application. 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 SUD80X280S
The AirTAC SUD Series Double Rod Cylinder SUD80X280S is a double-acting profile-type standard cylinder with a Ø80mm bore and 280mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUD80X280S, which matches its bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke280 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUD80X280S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SUD Series Double Rod Cylinder SUD80X280S
The AirTAC SUD80X280S is a discontinued double-acting double-rod profile cylinder where a rod exits both ends, ensuring force is equal both ways at 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. It features a 80 mm bore, 280 mm stroke, 3/8" port, M20x1.5 rod thread, and 28 mm cushions. The direct replacement is the SAUD80X280S, matching the bore, stroke, force, and FA/LB mounting.
Because the rear rod can carry a sensor cam and drive two tools simultaneously while resisting rotation, this design is highly stable. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches; the SAUD replacement uses current CMSG/DMSG/EMSG sensors. Note that air cushions only decelerate; use an external rod lock for load holding.
Airtac SUD Series Double Rod Cylinder SUD80X280S Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD80X280S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD80X280S |
| Bore size | Ø80 mm |
| Stroke | 280 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 SAUD80X280S 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 SAUD80X280S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SUD Series Double Rod Cylinder SUD80X280S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×280 | 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 SUD80X280S Is Used
Dual-Tool Machining Station
Drives two opposing machining heads simultaneously with equal both ways force, maintaining strict synchronization without rotational drift.
Anti-Rotation Transfer Unit
Uses the twin-rod geometry to prevent piston rotation during horizontal part transfer across a conveyor, ensuring precise placement.
Symmetric Lift Fixture
Lifts fixtures evenly from both ends using the 2268 N @0.5 MPa equal force, providing stable vertical movement for heavy components.
Replacing the Airtac SUD Series Double Rod Cylinder SUD80X280S with the SAUD80X280S
To replace the discontinued SUD80X280S, use the SAUD80X280S direct, which preserves the 80 mm bore, 280 mm stroke, 3/8" port, and equal-both-ways force. When sizing both ways, verify your load against the 2268 N @0.5 MPa output, or step to neighbouring bores if higher force is needed. Choose a double-rod cylinder when anti-rotation, dual-tool driving, or back-rod sensor cam placement is required. Mounting is limited to Basic, FA, and LB (SC-series compatible only). For the -S magnet option, upgrade from CS1-B/DS1-B to CMSG/DMSG/EMSG sensors. Since the stroke is 280 mm (under 300), side-load stress is moderate, but always verify guide alignment.
Replacement checklist
- ✓ Same bore / stroke → SAUD80X280S
- ✓ 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 SUD80X280S FAQ
Yes, the SUD80X280S is discontinued. The direct replacement is the SAUD80X280S, which matches the 80 mm bore, 280 mm stroke, 3/8" port, and FA/LB mounting. You must upgrade the sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
Because it is a double-rod cylinder, force is equal both ways: 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. Operating speed ranges from 30-800 mm/s.
Related AirTAC SAU Cylinders
Request a Quote for the SAUD80X280S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUD80X280S replacement — usually within 7-8 hours.