This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X450S, 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 SU40X450S
The AirTAC SU32~50 Standard Cylinder SU40X450S 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 SAU40X450S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke450 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X450S
- 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 SU40X450S
The AirTAC SU40X450S is a discontinued double-acting profile-type cylinder with a 40mm bore and 450mm stroke. It delivers 628N push force at 0.5MPa via a 1/4" port. AirTAC replaced this legacy unit with the SAU40X450S, a direct replacement retaining the exact bore, stroke, output force, and SC-series mounting footprint.
The SAU upgrade introduces CMSG/DMSG/EMSG sensors to replace this model's legacy CS1-B/DS-B switches, and adds an optional SAUF built-in 4M valve the SU line lacked. The extruded aluminum profile is more compact than an ISO 15552 cylinder of the same bore.
Airtac SU32~50 Standard Cylinder SU40X450S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X450S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X450S |
| 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 SAU40X450S 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 SAU40X450S 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 SU40X450S
| 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 SU40X450S Is Used
Package Diverting
Pushes medium-weight cartons at 90 degrees on a sorting line using the 628N push force, with the 450mm stroke reaching across the belt.
Pallet Positioning
Indexes empty pallets into a wrapping station, utilizing the compact profile body to fit within tight conveyor frame clearances.
Component Ejection
Ejects machined aluminum parts from a fixture, where the adjustable 21mm cushion decelerates the rod smoothly at the end of travel.
Replacing the Airtac SU32~50 Standard Cylinder SU40X450S with the SAU40X450S
To replace this discontinued SU40X450S, order the SAU40X450S direct equivalent, verifying your 1/4" port, M12x1.25 rod thread, and SC-series mounting (LB/FA/FB/CA/CB). Because this SKU includes a magnet (-S), note that your legacy CS1-B/DS1-B switches must change to the current CMSG/DMSG/EMSG family on the SAU. If your application needs integrated flow control, consider the SAUF variant with its built-in valve. For loads requiring 879N push at 0.7MPa, step up to a 50mm bore; if 40mm is oversized, a 32mm bore provides 402N. With a 450mm stroke, prevent rod bending by using an external guide to absorb side loads. A plain cylinder drifts on air loss—the cushion only decelerates—so fit an external rod lock for held loads.
Replacement checklist
- ✓ Same bore / stroke → SAU40X450S
- ✓ 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 SU40X450S FAQ
Yes, the SU40X450S is discontinued. The direct replacement is the AirTAC SAU40X450S. It matches the 40mm bore, 450mm stroke, 628N force, 1/4" port, and SC-series mounting accessories, so it fits the same application directly.
The SAU40X450S 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 SU40X450S has a magnet (-S), the legacy CS1-B/DS1-B switches are replaced by current CMSG/DMSG/EMSG sensors on the SAU model.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X450S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X450S replacement — usually within 7-8 hours.