This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X120S, 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 SU50X120S
The AirTAC SU32~50 Standard Cylinder SU50X120S 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 SAU50X120S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke120 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X120S
- 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 SU50X120S
The AirTAC SU50X120S is a discontinued double-acting profile-type cylinder with a 50mm bore and 120mm stroke. AirTAC replaced this end-of-life unit with the SAU50X120S, a direct upgrade retaining the exact 1/4" port, M16x1.5 rod thread, 21mm cushions, and SC-series mounting footprint.
Because this SKU includes a magnet (-S), it originally used legacy CS1-B/DS1-B switches; the SAU replacement transitions to current CMSG/DMSG/EMSG sensors. The SAU family also introduces a SAUF variant with a built-in 4M solenoid valve that the SU line never offered. The extruded aluminum body is shorter than an ISO 15552 cylinder of the same bore, and a plain cylinder cannot hold a load without live air—the cushions only decelerate.
Airtac SU32~50 Standard Cylinder SU50X120S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X120S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X120S |
| 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 SAU50X120S 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 SAU50X120S 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 SU50X120S
| 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 SU50X120S Is Used
Clamping Fixtures
Secures machined parts with 982 N of push force at 0.5 MPa, providing stable holding during milling or drilling operations.
Package Diverting
Actuates routing gates on 50mm stroke lines, using the compact profile body to fit within tight transfer station clearances.
Replacing the Airtac SU32~50 Standard Cylinder SU50X120S with the SAU50X120S
To replace the SU50X120S, order the SAU50X120S. Confirm your 1/4" port thread (PT, G, or NPT) and SC-series mounting (LB, FA, FB, CA, CB, or TC). Since your SKU has a magnet, note the sensor family changes from CS1-B/DS1-B to CMSG/DMSG/EMSG. For sizing, the 50mm bore pushes 982 N at 0.5 MPa; if you need less force, a 40mm bore offers 628 N, while a 63mm bore provides 1559 N. At 120mm stroke, side-load risks are low, but always guide the load. For vertical lifts or fail-safe holding, add an external rod lock or pilot-operated check valve, as air cushions only decelerate. Consider the SAUF valve-integrated variant if you need self-switching.
Replacement checklist
- ✓ Same bore / stroke → SAU50X120S
- ✓ 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 SU50X120S FAQ
Yes, the SU50X120S is discontinued. The direct replacement is the AirTAC SAU50X120S. It shares the same 50mm bore, 120mm stroke, 1/4" port, output force, and SC-series mounting accessories. You can install the SAU directly into your existing fixture.
The 50mm bore generates 982 N push and 825 N pull at 0.5 MPa, 1374 N at 0.7 MPa, and a theoretical max of 200 kgf at 1.0 MPa. Because your SU model has a magnet (-S), it used 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 SAU50X120S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X120S replacement — usually within 7-8 hours.