This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X1000FB, 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 SU50X1000FB is a double-acting profile-type standard cylinder with a Ø50mm bore and 1000mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X1000FB, which matches its bore, stroke, force and mounting.
The AirTAC SU50X1000FB is a discontinued double-acting profile-type standard cylinder with a 50 mm bore and 1000 mm stroke. The direct replacement is the SAU50X1000FB, matching the bore, stroke, output force, port size and FB mounting without any footprint changes.
This extruded aluminium profile body is shorter than an ISO 15552 cylinder of the same bore and reuses AirTAC SC-series accessories. Because this SKU lacks a magnet, it cannot accept a sensor; furthermore, the SAU upgrade transitions from legacy CS1-B/DS1-B switches to the current CMSG/DMSG/EMSG family and introduces the SAUF built-in 4M solenoid valve variant the SU line never offered.
| Model | Airtac SU32~50 Standard Cylinder SU50X1000FB |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X1000FB |
| Bore size | Ø50 mm |
| Stroke | 1000 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 SAU50X1000FB 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 SAU50X1000FB 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. |
| ×1000 | 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 packages across a 1000 mm transfer zone using the 982 N push force at 0.5 MPa with FB mounting.
Drives a tooling carriage 1000 mm forward and back, relying on adjustable 21 mm cushions for smooth stops.
To replace the SU50X1000FB, order the SAU50X1000FB and confirm the 50 mm bore, 1000 mm stroke, 1/4" port with PT thread, M16x1.5 rod thread and the SC-series FB mounting interface. If downsizing, a 40 mm bore gives 628 N push at 0.5 MPa, while a 63 mm bore yields 1559 N for heavier demands. This non-magnetic SKU cannot take a sensor, but if you need position detection on the SAU, specify the -S option and use CMSG/DMSG/EMSG switches instead of the old CS1-B/DS1-B. For the 1000 mm stroke, use an external guide to prevent rod bending and side loads. The air cushion only decelerates the piston near stroke end; for load holding on air loss, install an external rod lock or pilot-operated check valve.
Replacement checklist
Yes, the SU50X1000FB is discontinued. The direct replacement is the SAU50X1000FB. It provides the same 50 mm bore, 1000 mm stroke, 982 N force, 1/4" port and FB mounting.
The 50 mm bore uses a 1/4" port. It delivers 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and a theoretical maximum of 200 kgf at 1.0 MPa. It operates at 30-800 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X1000FB replacement — usually within 7-8 hours.