This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU32X255S, 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 SU32X255S
The AirTAC Airtac SU32~50 Standard Cylinder SU32X255S is a double-acting profile-type standard cylinder with a Ø32mm bore and 255mm stroke, 1/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU32X255S, which matches its bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke255 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAU32X255S
- 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 SU32X255S
The AirTAC SU32X255S is a discontinued double-acting profile-type cylinder with a 32mm bore and 255mm stroke. Delivering 402N push force at 0.5MPa, its extruded aluminium barrel makes it more compact than a same-bore ISO 15552 unit. AirTAC replaced this EOL model with the SAU32X255S, a direct retaining the exact bore, stroke, 1/8" port and SC-series mounting.
Because the -S magnet pairs with legacy CS1-B/DS1-B switches, upgrading to the SAU requires current CMSG/DMSG/EMSG sensors. The SAU line also adds a SAUF valve-integrated variant this SU lacked. Note that air cushions only decelerate; use a rod lock for load holding.
Airtac SU32~50 Standard Cylinder SU32X255S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU32X255S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU32X255S |
| Bore size | Ø32 mm |
| Stroke | 255 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 1000 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAU32X255S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAU32X255S 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 SU32X255S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×255 | 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 SU32X255S Is Used
Small Part Ejection
Uses the 402N push force at 0.5MPa to reliably push lightweight machined components out of an automated fixture.
Package Diverting
Extends 255mm to actuate a routing gate on a compact packaging line, benefiting from the short profile-body footprint.
Bin Sorting
Provides the 20kg vertical lift margin needed to raise small tote bins from lower storage racks during retrieval.
Replacing the Airtac SU32~50 Standard Cylinder SU32X255S with the SAU32X255S
To replace this SU32X255S, order the SAU32X255S direct equivalent, verifying the 255mm stroke, M10x1.25 rod thread, 1/8" port, and SC-series mounting. If downsizing, a 40mm bore yields 628N push at 0.5MPa; if upsizing from a 25mm unit, this 32mm bore provides 402N. The -S suffix means a magnet is present, but the legacy CS1-B/DS1-B switches are obsolete—select CMSG/DMSG/EMSG sensors for the SAU. For this 255mm stroke, ensure guide rails carry side loads to prevent rod bending. A plain cylinder drifts on air loss; add an external pilot-operated check valve to hold loads. For faster cycling, consider the SAUF variant with its built-in 4M solenoid valve.
Replacement checklist
- ✓ Same bore / stroke → SAU32X255S
- ✓ 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 SU32X255S FAQ
Yes, the SU32X255S is discontinued. The direct replacement is the AirTAC SAU32X255S. It shares the identical 32mm bore, 255mm stroke, 1/8" port, output force, and SC-series mounting accessories, so it fits the same application directly.
The 32mm bore delivers 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, and a theoretical max of 82kgf at 1.0MPa. Because your SU32X255S has the -S magnet for legacy CS1-B/DS1-B switches, you must upgrade to CMSG/DMSG/EMSG sensors on the SAU replacement.
Related AirTAC SAU Cylinders
Request a Quote for the SAU32X255S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU32X255S replacement — usually within 7-8 hours.