This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU80X50, 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 SU80X50 is a double-acting profile-type standard cylinder with a Ø80mm bore and 50mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU80X50, which matches its bore, stroke, force and mounting.
The AirTAC SU80X50 is a discontinued double-acting profile cylinder with an 80mm bore and 50mm stroke. It delivers 2513N push and 2268N pull at 0.5MPa, making it a robust choice for heavy-duty actuation. AirTAC replaced this end-of-line unit with the SAU80X50, a direct alternative retaining the exact bore, stroke, output force, 3/8" port, and SC-series mounting form.
Because the SU body is an extruded aluminium profile with integrated cushioning, it is more compact than a standard ISO 15552 cylinder of the same size. This non-magnet SKU cannot accept a position switch. Note that the SAU upgrade switches to modern CMSG/DMSG/EMSG sensors and introduces the SAUF built-in-valve variant, though the core mechanics remain unchanged.
| Model | Airtac SU63-100 Standard Cylinder SU80X50 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU80X50 |
| Bore size | Ø80 mm |
| Stroke | 50 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 SAU80X50 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 SAU80X50 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. |
| ×50 | 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.
Ideal for driving heavy stamping dies and forming tools where the 2513N push force at 0.5MPa ensures consistent, powerful material deformation.
Provides robust actuation for heavy-duty pallet stops and diverters on conveyor lines, easily handling loads up to the 128kg vertical lift threshold.
Well-suited for opening and closing large automated safety gates or industrial chutes that require substantial thrust within a compact 50mm stroke.
To replace this discontinued SU80X50, order the SAU80X50. Confirm the 80mm bore, 50mm stroke, 3/8" port (default PT thread), M20x1.5 rod-end thread, and your specific SC-series mounting brackets (LB, FA, FB, CA, CB, or TC). Since this is a non-magnet model, it cannot accept a sensor; if sensing is required on the new unit, specify an SAU80X50-S and use CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B. When sizing, the neighbouring 63mm bore yields 1559N push at 0.5MPa, while the 100mm bore provides 3927N. A plain cylinder drifts on air loss—the 28mm adjustable cushion only decelerates near stroke end—so use an external rod lock or pilot-operated check valve for secure load holding. If you need faster cycling, consider the SAUF variant with its integrated 4M solenoid valve.
Replacement checklist
Yes, the AirTAC SU80X50 is discontinued. The direct replacement is the SAU80X50. It shares the identical 80mm bore, 50mm stroke, 513kgf max force, 3/8" port, and SC-series mounting accessories, allowing a direct physical swap without modifying your machinery.
This double-acting cylinder provides 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, and a theoretical maximum of 513kgf at 1.0MPa. Because this specific SKU lacks a magnet, it cannot accept position sensors; if sensing is needed on the SAU replacement, you must order the -S version and use CMSG/DMSG/EMSG switches.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU80X50 replacement — usually within 7-8 hours.