This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X80, 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 SU32~50 Standard Cylinder SU50X80 is a double-acting profile-type standard cylinder with a Ø50mm bore and 80mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X80, which matches its bore, stroke, force and mounting.
The AirTAC SU50X80 is a discontinued double-acting profile-type cylinder with an 80 mm stroke and 50 mm bore. It delivered 982 N push force at 0.5 MPa via a 1/4" port. AirTAC replaced this unit with the SAU50X80, a direct alternative retaining the exact stroke, force, port size, and SC-series mounting footprint.
Because this SKU lacks a magnet, it cannot accept a sensor. The SAU upgrade enables CMSG/DMSG/EMSG switches on magnetized variants, plus a new SAUF built-in valve option.
| Model | Airtac SU32~50 Standard Cylinder SU50X80 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X80 |
| Bore size | Ø50 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M16×1.5 |
| 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, 21 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAU50X80 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAU50X80 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). |
|---|---|
| 50 | Bore size in mm. |
| ×80 | 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.
Pushes medium-weight cartons off a sorting line using a safe 589 N working load.
Actuates lightweight safety gates or stops at palletizing cells with an 80 mm stroke.
Secures workpieces during machining, providing 982 N of clamping force at 0.5 MPa.
To replace the SU50X80, order the SAU50X80 and verify your 1/4" port, M16x1.5 rod thread, and SC-series mounting hardware. This non-magnetic SKU supports no sensors, but if you need position detection, migrate to an SAU-S model and use current CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B. Neighbouring bores offer alternatives: a 40 mm bore yields 628 N push at 0.5 MPa, while a 63 mm bore provides 1559 N. Note that a plain cylinder drifts on air loss; the 21 mm adjustable cushions only decelerate the piston, so fit an external rod lock or pilot-operated check valve for secure load holding.
Replacement checklist
Yes, the SU50X80 is discontinued. The direct replacement is the AirTAC SAU50X80. It matches the original 50 mm bore, 80 mm stroke, 982 N force, 1/4" port, and SC-series mounting accessories.
At 0.5 MPa it provides 982 N push and 825 N pull force, 1374 N push at 0.7 MPa, and a 200 kgf theoretical max at 1.0 MPa. Because this specific SKU lacks a magnet, it cannot accept sensors; the SAU replacement uses CMSG/DMSG/EMSG switches on its magnetized variants.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X80 replacement — usually within 7-8 hours.