This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU80X40, 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 SU80X40 is a double-acting profile-type standard cylinder with a Ø80mm bore and 40mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU80X40, which matches its bore, stroke, force and mounting.
The AirTAC SU80X40 is a discontinued double-acting profile-type cylinder with an 80mm bore and 40mm stroke. Delivering 2513N push force at 0.5MPa, it uses a 3/8" port and M20x1.5 rod thread. AirTAC replaced this legacy unit with the SAU80X40, a direct alternative retaining the exact bore, stroke, output force, port size, and SC-series mounting compatibility.
Because this specific SKU lacks a magnet, it cannot accept position sensors. If sensing is needed, the SAU upgrade supports modern CMSG/DMSG/EMSG switches, whereas older SU versions used CS1-B/DS1-B. The SAU family also introduces a SAUF variant with a built-in 4M solenoid valve.
| Model | Airtac SU63-100 Standard Cylinder SU80X40 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU80X40 |
| Bore size | Ø80 mm |
| Stroke | 40 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 SAU80X40 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 SAU80X40 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. |
| ×40 | 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.
Secures large metal castings during CNC machining using 2513N of thrust at 0.5MPa without shifting.
Pushes heavy loaded pallets onto secondary packaging lines with a compact 40mm stroke.
Briefly applies downward pressure to close and seal oversized industrial shipping containers.
To replace the SU80X40, order the SAU80X40. Verify your 3/8" port, M20x1.5 thread, and SC-series mounting hardware (LB/FA/FB/CA/CB) remain unchanged. This non-magnetic SKU cannot support switches; if you need sensing, select an SAU-S model and upgrade to CMSG/DMSG/EMSG sensors. For higher force needs, the 100mm bore offers 3927N push at 0.5MPa; for smaller setups, the 63mm bore provides 1559N. Note that a plain cylinder drifts without live air—the 28mm cushions only decelerate—so use an external rod lock for load holding. The SAUF valve-integrated option can also simplify actuation.
Replacement checklist
Yes, the SU80X40 is discontinued. The direct replacement is the AirTAC SAU80X40. It matches the 80mm bore, 40mm stroke, 2513N force, 3/8" port, and SC-series mounting accessories, so no mechanical redesign is needed.
It delivers 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, and a theoretical max of 513kgf at 1.0MPa. Because this specific SKU lacks a magnet, it cannot take sensors; the SAU replacement uses CMSG/DMSG/EMSG switches.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU80X40 replacement — usually within 7-8 hours.