This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X520S, 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 SU40X520S
The AirTAC SU32~50 Standard Cylinder SU40X520S is a double-acting profile-type standard cylinder with a Ø40mm bore and 520mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X520S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke520 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X520S
- 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 SU40X520S
The AirTAC SU40X520S is a discontinued double-acting profile-type cylinder with a 40mm bore and 520mm stroke. Delivering 628N push force at 0.5MPa, its direct replacement is the SAU40X520S, matching the 1/4" port, M12x1.25 rod thread, and SC-series mounting.
The SAU upgrade retains the compact extruded aluminum body but switches the -S magnet to modern CMSG/DMSG/EMSG sensors (the SU used legacy CS1-B/DS1-B switches), and introduces the SAUF built-in-valve option.
Airtac SU32~50 Standard Cylinder SU40X520S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X520S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X520S |
| Bore size | Ø40 mm |
| Stroke | 520 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 SAU40X520S 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 SAU40X520S 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 SU40X520S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×520 | 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 SU40X520S Is Used
Package Diversion
Pushes medium-weight cartons on a packing line using the 628N push force at 0.5MPa, with the 520mm stroke reaching across the belt.
Pallet Positioning
Indexes empty pallets into a loading zone, where the 32kg vertical lift capacity is sufficient for low-height vertical placement tasks.
Gate Actuation
Opens and closes lightweight machine safety gates, utilizing the compact profile body to fit within tight automation cell frames.
Replacing the Airtac SU32~50 Standard Cylinder SU40X520S with the SAU40X520S
To replace this SU40X520S, order the SAU40X520S, confirming the 40mm bore, 520mm stroke, 1/4" port, and PT/G/NPT thread. The -S magnet means you must switch from CS1-B/DS1-B to CMSG/DMSG/EMSG sensors. For the 520mm stroke, use external guides to prevent rod bending under side loads. If dropping to a 32mm bore yields 402N push at 0.5MPa; stepping up to 50mm gives 982N. A plain cylinder drifts without air; use a rod lock for held loads. The SAUF valve-integrated variant is available if needed.
Replacement checklist
- ✓ Same bore / stroke → SAU40X520S
- ✓ 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 SU40X520S FAQ
Yes, the AirTAC SU40X520S is discontinued. The direct replacement is the SAU40X520S. It shares the same 40mm bore, 520mm stroke, 628N output force, 1/4" port, and SC-series mounting accessories, fitting the exact same application.
The SAU40X520S matches the SU forces: 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, and a 128kgf maximum at 1.0MPa. Because this is an -S magnet model, the legacy CS1-B/DS1-B switches are replaced by the current CMSG/DMSG/EMSG sensor family on the SAU.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X520S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X520S replacement — usually within 7-8 hours.