This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X375S, 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 SU40X375S
The AirTAC SU32~50 Standard Cylinder SU40X375S is a double-acting profile-type standard cylinder with a Ø40mm bore and 375mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X375S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke375 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X375S
- 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 SU40X375S
The AirTAC SU40X375S is a discontinued double-acting profile-type cylinder with a 40mm bore and 375mm stroke. It delivers 628N push and 528N pull at 0.5MPa via a 1/4 inch port. AirTAC replaced this unit with the SAU40X375S, a direct upgrade retaining the exact body dimensions, force, and SC-series mounting.
The SAU replacement modernizes the sensor groove, upgrading from legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors, and introduces the SAUF built-in-valve variant the SU lacked.
Airtac SU32~50 Standard Cylinder SU40X375S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X375S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X375S |
| Bore size | Ø40 mm |
| Stroke | 375 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 SAU40X375S 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 SAU40X375S 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 SU40X375S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×375 | 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 SU40X375S Is Used
Package Diverting
Pushes medium-weight cartons off a sorting line using 628N of thrust, with the 375mm reach clearing adjacent lanes.
Parts Ejection
Ejects machined parts from a fixture, utilizing the adjustable 21mm cushions to decelerate the payload smoothly at stroke end.
Replacing the Airtac SU32~50 Standard Cylinder SU40X375S with the SAU40X375S
To replace this discontinued SU40X375S, order the SAU40X375S direct equivalent, verifying your 1/4 inch port, M12x1.25 rod thread, and SC-series mounting. Because this SKU includes a magnet (-S), note the sensor family changes from CS1-B/DS1-B to CMSG/DMSG/EMSG. If you need higher force, the 50mm bore yields 982N push at 0.5MPa; if lower force suffices, the 32mm bore provides 402N. At 375mm stroke, use external guides to prevent rod bending and side-load wear. For load holding on air loss, add an external rod lock or pilot-operated check valve, as cushions only decelerate. Consider the SAUF variant if you need a built-in 4M solenoid valve.
Replacement checklist
- ✓ Same bore / stroke → SAU40X375S
- ✓ 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 SU40X375S FAQ
Yes, the SU40X375S is discontinued. The direct replacement is the SAU40X375S. It shares the same 40mm bore, 375mm stroke, 628N force, 1/4 inch port, and SC-series mounting. The SAU also adds the SAUF built-in-valve option the SU lacked.
The 40mm bore provides 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 CMSG/DMSG/EMSG sensors on the SAU upgrade.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X375S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X375S replacement — usually within 7-8 hours.