This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU80X400N, 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.

The AirTAC SU63-100 Standard Cylinder SU80X400N is a double-acting profile-type standard cylinder with a Ø80mm bore and 400mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU80X400N, which matches its bore, stroke, force and mounting.
The AirTAC SU80X400N is a discontinued double-acting profile cylinder with an 80mm bore and 400mm stroke. As an end-of-line unit, it is replaced by the SAU80X400N, a direct alternative retaining the exact 3/8" port, M20x1.5 rod thread, and SC-series mounting. This cylinder delivers 2513N push force at 0.5MPa and includes an NBR seal for standard -20 to +70C operation. Because this SKU lacks a magnet, it cannot accept a position sensor.
The SAU upgrade keeps the same compact extruded aluminum body but modernizes sensing to CMSG/DMSG/EMSG switches (the SU used legacy CS1-B/DS1-B) and introduces the SAUF built-in-valve variant. Note that air cushions only decelerate the piston; without live air, the load drifts, requiring an external rod lock for holding.
| Model | Airtac SU63-100 Standard Cylinder SU80X400N |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU80X400N |
| Bore size | Ø80 mm |
| Stroke | 400 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 SAU80X400N carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAU80X400N produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×400 | 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.
Handles heavy pallet routing with 2513N push force at 0.5MPa, ensuring reliable transfer across packaging lines.
Provides the 400mm reach and 128kg vertical lift margin needed to push finished goods off accumulation rollers.
Cycles at 30-800mm/s to eject dense molded components, utilizing the adjustable 28mm cushions to absorb impact.
To replace the discontinued SU80X400N, order the SAU80X400N, confirming the 80mm bore, 400mm stroke, 3/8" port, and NBR seal. This no-magnet SKU cannot support sensors; if detection is needed, specify an SAU -S model and use CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B. For the 400mm stroke, use external guides to prevent rod bending under side loads. The cushion only decelerates; use a pilot-operated check valve to hold loads. The SAUF variant offers a built-in valve if needed.
Replacement checklist
Yes, the SU80X400N is discontinued. The direct replacement is the SAU80X400N, which shares the same 80mm bore, 400mm stroke, 2513N force, 3/8" port, and SC-series mounting.
It delivers 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, and a max of 513kgf at 1.0MPa. This NBR-seal SKU has no magnet and cannot take sensors; the SAU -S replacement uses CMSG/DMSG/EMSG switches.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU80X400N replacement — usually within 7-8 hours.