This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X125SN, 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 SU50X125SN
The AirTAC SU32~50 Standard Cylinder SU50X125SN is a double-acting profile-type standard cylinder with a Ø50mm bore and 125mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X125SN, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke125 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X125SN
- 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 SU50X125SN
The AirTAC SU50X125SN is a discontinued double-acting profile-type cylinder with a 50mm bore, 125mm stroke, 1/4" port, and NBR seals. It delivers 982N push force at 0.5MPa. AirTAC replaced this legacy unit with the SAU50X125SN, a direct upgrade retaining the exact bore, stroke, force, port size, and SC-series mounting compatibility.
The SAU replacement introduces CMSG/DMSG/EMSG sensors, replacing the older CS1-B/DS1-B switches used on this SU model. It also adds the SAUF built-in 4M solenoid valve option. Note that NBR seals limit temperatures to -20 to +70C; a plain cylinder needs an external rod lock for load holding.
Airtac SU32~50 Standard Cylinder SU50X125SN Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X125SN |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X125SN |
| Bore size | Ø50 mm |
| Stroke | 125 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 SAU50X125SN 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 SAU50X125SN 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 SU50X125SN
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×125 | 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 SU50X125SN Is Used
Package Diverting
Pushes cartons off a sorting line using the 125mm stroke, absorbing mid-stroke impacts via adjustable 21mm air cushions.
Replacing the Airtac SU32~50 Standard Cylinder SU50X125SN with the SAU50X125SN
To replace this SU50X125SN, order the SAU50X125SN. Confirm the 50mm bore, 125mm stroke, 1/4" port, M16x1.5 rod thread, and SC-series mounting. Because this SKU has the -S magnet, you must upgrade your sensors: the legacy CS1-B/DS1-B switches will not fit the SAU, so select current CMSG/DMSG/EMSG reed or solid-state switches. The -N NBR seal is standard, but if your environment exceeds 70C, switch to Viton H for up to 150C. For sizing alternatives, a 40mm bore provides 628N push at 0.5MPa, while a 63mm bore yields 1559N. At 125mm stroke, side-load risks are low, but always guide the load to prevent rod bending. The cylinder cannot hold a load without air; use a pilot-operated check valve or rod lock for vertical safety. The SAUF variant offers a built-in valve if you need self-switching.
Replacement checklist
- ✓ Same bore / stroke → SAU50X125SN
- ✓ 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 SU50X125SN FAQ
Yes, the SU50X125SN is discontinued. The direct replacement is the AirTAC SAU50X125SN. It matches the 50mm bore, 125mm stroke, 982N force, 1/4" port, and SC-series mounting. You simply order the SAU equivalent.
At 0.5MPa it pushes 982N and pulls 825N; at 0.7MPa push is 1374N, and max theoretical force is 200kgf at 1.0MPa. Because this model has the -S magnet, it used legacy CS1-B/DS1-B switches; the SAU replacement requires upgrading to CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU50X125SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X125SN replacement — usually within 7-8 hours.