This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X450SN, 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 SU40X450SN
The AirTAC SU32~50 Standard Cylinder SU40X450SN is a double-acting profile-type standard cylinder with a Ø40mm bore and 450mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X450SN, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke450 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X450SN
- 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 SU40X450SN
The AirTAC SU40X450SN is a discontinued double-acting profile-type cylinder with a 40 mm bore and 450 mm stroke. It delivers 628 N push force at 0.5 MPa through a 1/4" port. AirTAC replaced this legacy unit with the SAU40X450SN, a direct upgrade retaining the exact bore, stroke, output force, port size, and SC-series mounting compatibility.
The SAU upgrade introduces CMSG/DMSG/EMSG sensors, superseding the older CS1-B/DS1-B switches used on this -S magnet model, and adds a SAUF built-in-valve option the SU line lacked. The extruded aluminum profile is shorter than an ISO 15552 cylinder of the same bore.
Airtac SU32~50 Standard Cylinder SU40X450SN Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X450SN |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X450SN |
| Bore size | Ø40 mm |
| Stroke | 450 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 SAU40X450SN 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 SAU40X450SN 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 SU40X450SN
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×450 | 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 SU40X450SN Is Used
Vertical Material Lift
Raises lightweight bins up to 32 kg through the 450 mm travel, requiring an external guide to prevent rod bending on the ascent.
Pneumatic Stop Gate
Acts as a flow control barrier on assembly conveyors, where the NBR seal handles standard industrial temperatures reliably.
Replacing the Airtac SU32~50 Standard Cylinder SU40X450SN with the SAU40X450SN
To replace this discontinued SU40X450SN, order the SAU40X450SN direct equivalent, verifying the 1/4" port, M12x1.25 rod thread, and SC-series mounting. Because the -S magnet is present, note that your legacy CS1-B/DS1-B switches must change to the SAU's CMSG/DMSG/EMSG sensor family. The -N NBR seal suits standard -20 to +70 C environments. At 450 mm stroke, prevent rod bending by supporting the load with an external guide to avoid side-load damage. If sizing alternatives, a 32 mm bore yields 402 N push at 0.5 MPa, while a 50 mm bore provides 982 N. Remember, the air cushion only decelerates the piston; it does not hold the load on air loss, so fit an external rod lock or pilot-operated check valve for static holding.
Replacement checklist
- ✓ Same bore / stroke → SAU40X450SN
- ✓ 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 SU40X450SN FAQ
Yes, the SU40X450SN is discontinued. The direct replacement is the AirTAC SAU40X450SN. It matches the 40 mm bore, 450 mm stroke, 628 N force at 0.5 MPa, 1/4" port, and SC-series mounting. You simply order the SAU equivalent.
This 40 mm bore cylinder provides 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, and a theoretical max of 128 kgf at 1.0 MPa. Because this is an -S magnet model, the legacy 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 SAU40X450SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X450SN replacement — usually within 7-8 hours.