This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X425S, 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 SU50X425S
The AirTAC Airtac SU32~50 Standard Cylinder SU50X425S is a double-acting profile-type standard cylinder with a Ø50mm bore and 425mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X425S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke425 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X425S
- 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 SU50X425S
The AirTAC SU50X425S is a discontinued double-acting profile-type cylinder with a 50mm bore and 425mm stroke. It delivers 982 N push force at 0.5 MPa. AirTAC replaced this legacy unit with the SAU50X425S, a direct upgrade retaining the exact body, stroke, force, 1/4" port, and SC-series mounting.
The SAU upgrade switches the -S magnet from legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors, and introduces the SAUF built-in-valve variant.
Airtac SU32~50 Standard Cylinder SU50X425S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X425S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X425S |
| Bore size | Ø50 mm |
| Stroke | 425 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 SAU50X425S 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 SAU50X425S 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 SU50X425S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×425 | 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 SU50X425S Is Used
Long-Stroke Diverting
Pushes packages across a 425mm conveyor lane using the 982 N push force at 0.5 MPa.
Component Ejection
Ejects machined parts from a fixture over a 425mm distance with adjustable end cushions.
Replacing the Airtac SU32~50 Standard Cylinder SU50X425S with the SAU50X425S
To replace the SU50X425S, order the SAU50X425S. Verify your 1/4" port thread (PT, G, or NPT) and SC-series mounting (LB, FA, FB, CA, CB). Because this is a 425mm stroke, add external guides to prevent rod bending under side loads. If moving up, a 63mm bore yields 1559 N at 0.5 MPa; dropping to 40mm gives 628 N. The -S magnet requires new CMSG/DMSG/EMSG sensors. For load holding on air loss, add an external rod lock, as cushions only decelerate.
Replacement checklist
- ✓ Same bore / stroke → SAU50X425S
- ✓ 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 SU50X425S FAQ
Yes, the SU50X425S is discontinued. The direct replacement is the AirTAC SAU50X425S. It matches the 50mm bore, 425mm stroke, 982 N force, 1/4" port, and SC-series mounting.
The SAU50X425S matches the SU force: 982 N push and 825 N pull at 0.5 MPa, 1374 N at 0.7 MPa, and 200 kgf max at 1.0 MPa. The -S magnet upgrades from legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU50X425S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X425S replacement — usually within 7-8 hours.