This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X520, 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 SU40X520
The AirTAC Airtac SU32~50 Standard Cylinder SU40X520 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 SAU40X520, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke520 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X520
- 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 SU40X520
The AirTAC SU40X520 is a discontinued double-acting profile-type cylinder featuring a 40 mm bore and 520 mm stroke. It delivers 628 N push force at 0.5 MPa through a 1/4" port, utilizing an extruded aluminum barrel that is more compact than same-bore ISO 15552 units. AirTAC replaced this EOL model with the SAU40X520, a direct replacement retaining the exact body dimensions, M12x1.25 rod thread, output force, and SC-series mounting compatibility.
Because this SKU lacks a magnet, it cannot accept a position sensor. The SAU upgrade introduces CMSG/DMSG/EMSG switch compatibility for magnetized variants and adds a SAUF built-in 4M solenoid valve option the SU line never offered.
Airtac SU32~50 Standard Cylinder SU40X520 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X520 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X520 |
| 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 SAU40X520 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 SAU40X520 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 SU40X520
| 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 SU40X520 Is Used
Pallet Handling
Extends to index empty pallets into a wrapping station, requiring external guide rails to support the long 520 mm rod overhang during lateral pushes.
Component Ejection
Ejects machined aluminum parts from a fixture, leveraging the 21 mm adjustable air cushions to decelerate the payload smoothly at stroke end.
Replacing the Airtac SU32~50 Standard Cylinder SU40X520 with the SAU40X520
To replace this discontinued SU40X520, order the SAU40X520 direct equivalent, verifying your 1/4" port, PT/G/NPT thread choice, and SC-series mounting hardware (LB/FA/FB/CA/CB). Since this specific SKU has no magnet (-S), it cannot support a sensor; if sensing is required, specify an SAU40X520S and migrate from the legacy CS1-B/DS1-B switches to the current CMSG/DMSG/EMSG family. For the 520 mm stroke, external guides are strongly recommended to prevent rod bending and premature seal wear under side loads. If neighboring bores are evaluated, a 32 mm bore yields 402 N push at 0.5 MPa, while a 50 mm bore provides 982 N. Note that a standard cylinder drifts on air loss—the cushions only decelerate end-of-stroke motion—so fit an external rod lock or pilot-operated check valve for load holding. The SAUF valve-integrated variant can also simplify cycle control.
Replacement checklist
- ✓ Same bore / stroke → SAU40X520
- ✓ 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 SU40X520 FAQ
Yes, the AirTAC SU40X520 is discontinued and end-of-life. The direct replacement is the SAU40X520. It matches the 40 mm bore, 520 mm stroke, 628 N push force at 0.5 MPa, 1/4" port, and SC-series mounting, so it drops directly into the same application.
At 0.5 MPa it provides 628 N push and 528 N pull, increasing to 879 N push at 0.7 MPa and 1130 N at 0.9 MPa, with a theoretical max of 128 kgf at 1.0 MPa. This specific SKU lacks a magnet and cannot accept a sensor; the SAU replacement uses CMSG/DMSG/EMSG switches on its -S variants.
Request a Quote for the SAU40X520
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X520 replacement — usually within 7-8 hours.