This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X90, 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 SU40X90
The AirTAC Airtac SU32~50 Standard Cylinder SU40X90 is a double-acting profile-type standard cylinder with a Ø40mm bore and 90mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X90, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke90 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X90
- 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 SU40X90
The AirTAC SU40X90 is a discontinued double-acting profile-type cylinder with a 40mm bore and 90mm stroke. It delivers 628N push and 528N pull at 0.5MPa, operating via a 1/4 port. AirTAC replaced this EOL unit with the SAU40X90, a direct alternative retaining the exact bore, stroke, output force, port size, and SC-series mounting.
Because the SU40X90 lacks a magnet (-S), it cannot accept a sensor. The SAU40X90 upgrade introduces current CMSG/DMSG/EMSG switch compatibility and a SAUF built-in-valve option the SU line never had.
Airtac SU32~50 Standard Cylinder SU40X90 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X90 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X90 |
| Bore size | Ø40 mm |
| Stroke | 90 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 SAU40X90 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 SAU40X90 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 SU40X90
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×90 | 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 SU40X90 Is Used
Package Diverting
Provides reliable 90mm stroke actuation to push small cartons off a main conveyor line, utilizing the compact profile body to fit tight transfer spaces.
Product Ejection
Generates 628N of push force at 0.5MPa to eject molded plastic parts from automated assembly machinery without damaging the product surface.
Replacing the Airtac SU32~50 Standard Cylinder SU40X90 with the SAU40X90
To replace this discontinued SU40X90, order the SAU40X90 and confirm your 1/4 port thread (PT, G, or NPT) plus SC-series mounting (LB/FA/FB/CA/CB). If you need position sensing, note the SAU requires CMSG/DMSG/EMSG switches, whereas this no-magnet SU SKU cannot take a sensor. Sizing both ways: the 40mm bore yields 628N push at 0.5MPa, so if you need less force consider a 32mm bore (402N), or step up to a 50mm bore (982N) for more power. A plain cylinder drifts on air loss—the cushion only decelerates—so add an external rod lock or pilot-operated check valve for held loads. The SAUF variant adds a built-in 4M solenoid valve if you need self-switching.
Replacement checklist
- ✓ Same bore / stroke → SAU40X90
- ✓ 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 SU40X90 FAQ
Yes, the AirTAC SU40X90 is discontinued. The direct replacement is the SAU40X90. It shares the identical 40mm bore, 90mm stroke, 628N push force at 0.5MPa, 1/4 port, and SC-series mounting, so it fits the same application.
At 0.5MPa it pushes 628N and pulls 528N; at 0.7MPa it pushes 879N, with a theoretical max of 128kgf at 1.0MPa. Because this specific SU40X90 SKU lacks a magnet, it cannot take a sensor. The SAU40X90 replacement supports CMSG/DMSG/EMSG switches.
Request a Quote for the SAU40X90
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X90 replacement — usually within 7-8 hours.