This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X540S, 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 SU40X540S
The AirTAC SU32~50 Standard Cylinder SU40X540S is a double-acting profile-type standard cylinder with a Ø40mm bore and 540mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X540S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke540 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X540S
- 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 SU40X540S
The AirTAC SU40X540S is a discontinued double-acting profile-type cylinder with a 40mm bore and 540mm stroke. It delivers 628N push and 528N pull at 0.5MPa via a 1/4" port. AirTAC replaced this unit with the SAU40X540S, a direct alternative retaining the exact body, stroke, force, and SC-series mounting footprint.
The SAU upgrade introduces CMSG/DMSG/EMSG sensors, replacing the legacy CS1-B/DS1-B switches used on this -S model, and adds an optional SAUF built-in valve. The 540mm stroke necessitates external guides to prevent rod bending.
Airtac SU32~50 Standard Cylinder SU40X540S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X540S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X540S |
| Bore size | Ø40 mm |
| Stroke | 540 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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 1200 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAU40X540S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The SAU40X540S 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 SU40X540S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×540 | 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 SU40X540S Is Used
Package Diversion
Actuates routing gates on packaging lines, utilizing the 540mm stroke to shift parcels between adjacent belts smoothly.
Vertical Material Lift
Raises lightweight totes up to 32kg in pick modules, relying on the 628N thrust at 0.5MPa for reliable vertical actuation.
Component Ejection
Pushes machined parts out of a fixture, using adjustable end cushions to decelerate the motion over the long 540mm travel.
Replacing the Airtac SU32~50 Standard Cylinder SU40X540S with the SAU40X540S
To replace the SU40X540S, order the SAU40X540S, confirming the 40mm bore, 540mm stroke, 1/4" port, M12x1.25 rod thread, and SC-series mounts. Because this is a -S model, note the sensor family changes from CS1-B/DS1-B to CMSG/DMSG/EMSG. If downsizing, a 32mm bore yields 402N push at 0.5MPa; if upsizing, a 50mm bore yields 982N. The 540mm stroke requires external guides to manage side loads and prevent rod bending. The cylinder will not hold a load without live air—use an external rod lock or pilot-operated check valve for secure holding, as cushions only decelerate. For faster cycling, consider the SAUF variant with its integrated 4M solenoid valve.
Replacement checklist
- ✓ Same bore / stroke → SAU40X540S
- ✓ 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 SU40X540S FAQ
Yes, the SU40X540S is discontinued. The direct replacement is the SAU40X540S. It shares the identical 40mm bore, 540mm stroke, 628N force at 0.5MPa, 1/4" port, and SC-series mounting hardware.
The 40mm bore provides 628N push and 528N pull at 0.5MPa, 879N at 0.7MPa, and a 128kgf max at 1.0MPa. Because this is a -S model with a magnet, the original CS1-B/DS1-B switches are obsolete; the SAU replacement requires the current CMSG/DMSG/EMSG sensor family.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X540S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X540S replacement — usually within 7-8 hours.