This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X620S, 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 SU40X620S
The AirTAC Airtac SU32~50 Standard Cylinder SU40X620S is a double-acting profile-type standard cylinder with a Ø40mm bore and 620mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X620S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke620 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X620S
- 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 SU40X620S
The AirTAC SU40X620S is a discontinued double-acting profile-type cylinder with a 40mm bore and 620mm stroke. Delivering 628N push force at 0.5MPa, it features a 1/4" port and an extruded aluminum body that is more compact than an ISO 15552 unit of the same size. AirTAC replaced this EOL unit with the SAU40X620S, a direct replacement retaining the exact bore, stroke, force, port, and SC-series mounting.
When upgrading to the SAU40X620S, note that the built-in magnet now pairs with current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches used on this SU model. The SAU line also introduces a SAUF variant with a built-in 4M solenoid valve, an option the SU series never had.
Airtac SU32~50 Standard Cylinder SU40X620S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X620S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X620S |
| Bore size | Ø40 mm |
| Stroke | 620 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 SAU40X620S 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 SAU40X620S 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 SU40X620S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×620 | 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 SU40X620S Is Used
Long-Reach Diverting
Pushes packages across a 620mm conveyor lane using the 628N push force at 0.5MPa, guided externally to prevent rod bending.
Compact Assembly Ejector
Ejects machined parts from a tight cell where the shorter profile body saves space compared to standard ISO 15552 cylinders.
Replacing the Airtac SU32~50 Standard Cylinder SU40X620S with the SAU40X620S
To replace the discontinued SU40X620S, order the SAU40X620S, confirming the 40mm bore, 620mm stroke, 1/4" port, and M12x1.25 rod thread. Because the -S magnet is present, plan to upgrade your legacy CS1-B/DS1-B switches to CMSG/DMSG/EMSG sensors for the SAU. If you need higher force, the 50mm bore offers 982N push at 0.5MPa; if less is acceptable, the 32mm bore provides 402N. A plain cylinder does not hold load on air loss—the cushion only decelerates—so use an external rod lock or pilot-operated check valve for held loads. For the 620mm stroke, use an external guide to prevent rod bending and side-load wear. If valve integration is desired, explore the SAUF built-in-valve option.
Replacement checklist
- ✓ Same bore / stroke → SAU40X620S
- ✓ 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 SU40X620S FAQ
Yes, the SU40X620S is discontinued. The direct replacement is the SAU40X620S. It shares the same 40mm bore, 620mm stroke, 1/4" port, output force, and SC-series mounting accessories, so it fits the same application directly.
The SAU40X620S provides 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, and a theoretical max of 128kgf at 1.0MPa. Because your SU40X620S has a magnet (-S), the legacy CS1-B/DS1-B switches must be replaced with current CMSG/DMSG/EMSG sensors on the SAU model.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X620S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X620S replacement — usually within 7-8 hours.