This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU32X420S, 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 SU32X420S
The AirTAC SU32~50 Standard Cylinder SU32X420S is a double-acting profile-type standard cylinder with a Ø32mm bore and 420mm stroke, 1/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU32X420S, which matches its bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke420 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAU32X420S
- 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 SU32X420S
The AirTAC SU32X420S is a discontinued double-acting profile cylinder with a 32mm bore and 420mm stroke. Delivering 402N push force at 0.5MPa, its direct replacement is the SAU32X420S, matching the bore, stroke, force, 1/8" port, and SC-series mounts. The extruded aluminium body is more compact than an ISO 15552 cylinder of the same size.
The SAU upgrade introduces CMSG/DMSG/EMSG sensors to replace this unit's legacy CS1-B/DS1-B switches, and offers a new SAUF built-in-valve variant. Note that air cushions only decelerate; use an external rod lock to hold loads.
Airtac SU32~50 Standard Cylinder SU32X420S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU32X420S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU32X420S |
| Bore size | Ø32 mm |
| Stroke | 420 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 SAU32X420S 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 SAU32X420S 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 SU32X420S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×420 | 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 SU32X420S Is Used
Small Part Ejection
Ejects moulded plastic parts from a machine bed, utilising the compact profile body to fit tight cell layouts.
Pneumatic Gating
Actuates a diverter gate for small components, benefiting from the 30-800mm/s speed range for rapid cycling.
Replacing the Airtac SU32~50 Standard Cylinder SU32X420S with the SAU32X420S
To replace this SU32X420S, order the SAU32X420S direct equivalent, confirming the 32mm bore, 420mm stroke, 1/8" port, M10x1.25 rod thread, and SC-series mounting. Because this is a -S magnet model, you must switch from legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors. If you need more force than the 32mm bore provides (563N at 0.7MPa), step up to a 40mm bore (879N at 0.7MPa); if you need less, drop to a smaller profile. For the 420mm stroke, use external guides to prevent rod bending and side-load wear. The cushion only decelerates, so add a pilot-operated check valve for load holding. Consider the SAUF variant if you need a built-in 4M solenoid valve.
Replacement checklist
- ✓ Same bore / stroke → SAU32X420S
- ✓ 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 SU32X420S FAQ
Yes, the AirTAC SU32X420S is discontinued. The direct replacement is the SAU32X420S, which shares the same 32mm bore, 420mm stroke, 402N force, 1/8" port, and SC-series mounting accessories. You can swap them directly without changing your mechanical setup.
The 32mm bore provides 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and an 82kgf maximum at 1.0MPa. Because this is a -S model, it has a piston magnet for 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 SAU32X420S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU32X420S replacement — usually within 7-8 hours.