This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X120S, 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 SU40X120S
The AirTAC SU32~50 Standard Cylinder SU40X120S is a double-acting profile-type standard cylinder with a Ø40mm bore and 120mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X120S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke120 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X120S
- 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 SU40X120S
The AirTAC SU40X120S is a discontinued double-acting profile-type cylinder featuring a 40mm bore, 120mm stroke, and a 1/4" port. It delivers 628N of push force at 0.5MPa. AirTAC replaced this legacy unit with the SAU40X120S, a direct alternative retaining the exact same extruded aluminum body dimensions, output force, and SC-series mounting compatibility.
When upgrading, note that the built-in magnet on this -S model originally paired with legacy CS1-B/DS1-B switches, whereas the SAU replacement utilizes current CMSG/DMSG/EMSG sensors. Furthermore, the SAU line introduces a SAUF variant with a built-in 4M solenoid valve that the SU series lacked.
Airtac SU32~50 Standard Cylinder SU40X120S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X120S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X120S |
| Bore size | Ø40 mm |
| Stroke | 120 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 SAU40X120S 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 SAU40X120S 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 SU40X120S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×120 | 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 SU40X120S Is Used
Package Diverting
Actuates routing gates on packaging lines where the 528N pull force at 0.5MPa easily overcomes carton friction.
Vertical Lift Stops
Raises lightweight pallet stops up to 32kg, benefiting from the compact profile body that saves axial space.
Clamp Actuation
Drives small machining clamps delivering 628N of push force, with adjustable 21mm cushions softening impact.
Replacing the Airtac SU32~50 Standard Cylinder SU40X120S with the SAU40X120S
To replace this discontinued SU40X120S, order the SAU40X120S and verify your 1/4" port threads (PT, G, or NPT) alongside your SC-series mounting brackets. Because this SKU includes a magnet (-S), you must migrate from the old CS1-B/DS1-B switches to the modern CMSG/DMSG/EMSG sensor family. If your application requires integrated flow control, explore the SAUF variant which features a built-in valve. Sizing context: dropping to a 32mm bore yields 402N push at 0.5MPa, while stepping up to a 50mm bore provides 982N. Note that a standard cylinder drifts without live air—the cushion only decelerates the piston—so install an external rod lock or pilot-operated check valve for secure load holding.
Replacement checklist
- ✓ Same bore / stroke → SAU40X120S
- ✓ 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 SU40X120S FAQ
Yes, the SU40X120S is discontinued. The direct replacement is the AirTAC SAU40X120S. It matches the 40mm bore, 120mm stroke, 1/4" port, and SC-series mounting. The primary upgrade requirement is changing your sensors: the old CS1-B/DS1-B switches are replaced by CMSG/DMSG/EMSG models on the SAU.
This double-acting cylinder features a 1/4" air port and a 16mm piston rod. It generates 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, 1130N push at 0.9MPa, and a theoretical maximum of 128kgf at 1.0MPa. Operating speed ranges from 30-800mm/s.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X120S
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