This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X120SFA, 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.
Airtac SU32~50 Standard Cylinder SU50X120SFA
The AirTAC SU32~50 Standard Cylinder SU50X120SFA is a double-acting profile-type standard cylinder with a Ø50mm bore and 120mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X120SFA, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke120 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X120SFA
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SU32~50 Standard Cylinder SU50X120SFA
The AirTAC SU50X120SFA is a discontinued double-acting profile-type cylinder with a 50mm bore and 120mm stroke. AirTAC replaced this legacy unit with the SAU50X120SFA, a direct upgrade retaining the exact bore, stroke, output force, port size, and SC-series FA mounting interface.
Because this SKU includes the -S magnet, it originally used legacy CS1-B/DS1-B reed switches; the SAU replacement transitions to the current CMSG/DMSG/EMSG sensor family. The SAU line also introduces the SAUF variant with a built-in 4M solenoid valve, an option the SU series never offered. The extruded aluminum profile remains shorter and more compact than a same-bore ISO 15552 cylinder.
Airtac SU32~50 Standard Cylinder SU50X120SFA Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X120SFA |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X120SFA |
| Bore size | Ø50 mm |
| Stroke | 120 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 SAU50X120SFA carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAU50X120SFA produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SU32~50 Standard Cylinder SU50X120SFA
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×120 | 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.
Where the Airtac SU32~50 Standard Cylinder SU50X120SFA Is Used
Clamping Fixtures
Secures mid-weight workpieces during machining with 982N of push force at 0.5MPa, providing reliable holding without over-stressing tooling.
Package Diverting
Actuates routing gates on 50mm bore assemblies, using the 120mm stroke to push cartons cleanly between parallel conveyor lines.
Replacing the Airtac SU32~50 Standard Cylinder SU50X120SFA with the SAU50X120SFA
To replace the SU50X120SFA, order the SAU50X120SFA. Confirm the 50mm bore, 120mm stroke, 1/4" port, M16x1.5 rod thread, and the SC-series FA foot mounting accessory are retained. If sizing alternatives, the adjacent 40mm bore provides 628N push at 0.5MPa, while the 63mm bore offers 1559N. Note that a plain cylinder drifts without live air; the adjustable 21mm cushions only decelerate at stroke ends, so add an external rod lock or pilot-operated check valve for secure load holding. For the -S magnet option, remember the SAU uses CMSG/DMSG/EMSG sensors instead of the older CS1-B/DS1-B. If self-switching is needed, explore the SAUF built-in-valve variant.
Replacement checklist
- ✓ Same bore / stroke → SAU50X120SFA
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S): sensor family CS1-B → CMSG
- ✓ Mounting reused (FA/FB/CA/CB/LB)
- ✓ Need a built-in valve? → SAUF
Airtac SU32~50 Standard Cylinder SU50X120SFA FAQ
Yes, the SU50X120SFA is discontinued. The direct replacement is the SAU50X120SFA. It shares the same 50mm bore, 120mm stroke, 982N force, 1/4" port, and SC-series FA mounting, so it fits the same application directly.
At 0.5MPa it provides 982N push and 825N pull, increasing to 1374N at 0.7MPa, with a theoretical max of 200kgf at 1.0MPa. Because this model has the -S magnet, it used legacy CS1-B/DS1-B switches; the SAU replacement requires the newer CMSG/DMSG/EMSG sensor family.
Related AirTAC SAU Cylinders
Request a Quote for the SAU50X120SFA
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X120SFA replacement — usually within 7-8 hours.