This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU80X620, 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 Airtac SU63-100 Standard Cylinder SU80X620 is a double-acting profile-type standard cylinder with a Ø80mm bore and 620mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU80X620, which matches its bore, stroke, force and mounting.
The AirTAC SU80X620 is a discontinued double-acting profile-type cylinder with an 80mm bore and 620mm stroke. Delivering 2513N push and 2268N pull at 0.5MPa, it features an extruded aluminum barrel and adjustable air cushions at both ends. AirTAC replaced this EOL unit with the SAU80X620, a direct upgrade retaining the exact 3/8 port, M20x1.5 rod thread, and SC-series mounting dimensions.
The SAU replacement introduces current CMSG/DMSG/EMSG sensors and a SAUF built-in-valve option the SU lacked. This non-magnet SKU cannot take a switch. Note that standard air cushions only decelerate the load; they do not hold it without live air.
| Model | Airtac SU63-100 Standard Cylinder SU80X620 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU80X620 |
| Bore size | Ø80 mm |
| Stroke | 620 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 SAU80X620 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 SAU80X620 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. |
| ×620 | 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.
Routes heavy pallets on a packaging line using the 2513N push force at 0.5MPa, while the 620mm stroke clears adjacent lanes.
Ejects molded components from a press, relying on the 28mm adjustable air cushions to decelerate the 80mm piston at stroke end.
To replace this discontinued SU80X620, order the SAU80X620 direct equivalent, verifying your 3/8 port, M20x1.5 rod thread, and SC-series mounting hardware. Because this is a non-magnet SKU, it cannot accept a sensor; if sensing is required, specify an SAU-S model and upgrade to CMSG/DMSG/EMSG switches. For load holding, add an external rod lock or pilot-operated check valve, as cushions only decelerate. With a 620mm stroke, prevent rod bending by using an external guide to absorb side loads. If downsizing, a 63mm bore yields 1559N push at 0.5MPa; if upsizing, a 100mm bore provides 3927N.
Replacement checklist
Yes, the SU80X620 is end-of-life. The direct replacement is the AirTAC SAU80X620. It matches the 80mm bore, 620mm stroke, 2513N output force, 3/8 port, and SC-series mounting accessories, dropping directly into the same application.
The 80mm bore features a 3/8 port. At 0.5MPa it provides 2513N push and 2268N pull; at 0.7MPa push is 3518N; at 0.9MPa push is 4523N. The theoretical maximum force is 513kgf at 1.0MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU80X620 replacement — usually within 7-8 hours.