This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X330S, 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 SU40X330S
The AirTAC SU32~50 Standard Cylinder SU40X330S is a double-acting profile-type standard cylinder with a Ø40mm bore and 330mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X330S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke330 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X330S
- 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 SU40X330S
The AirTAC SU40X330S is a discontinued double-acting profile-type cylinder with a 40mm bore and 330mm stroke, delivering 628N push force at 0.5MPa. AirTAC replaced this end-of-life unit with the SAU40X330S, a direct replacement retaining the exact 1/4" port, M12x1.25 rod thread, and SC-series mounting compatibility.
Because this SKU includes a magnet (-S), it originally used legacy CS1-B/DS1-B switches; the SAU successor transitions to current CMSG/DMSG/EMSG sensors. The SAU family also introduces a SAUF variant with a built-in valve, an option the SU line never offered.
Airtac SU32~50 Standard Cylinder SU40X330S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X330S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X330S |
| Bore size | Ø40 mm |
| Stroke | 330 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 SAU40X330S 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 SAU40X330S 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 SU40X330S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×330 | 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 SU40X330S Is Used
Package Diverting
Pushes medium-weight cartons off a sorting line using 628N thrust, with the 330mm extension clearing adjacent lanes.
Pallet Gate Control
Actuates 330mm safety gates or stops at loading docks where a shorter profile body saves valuable floor space.
Component Ejection
Ejects machined parts from a fixture, using the magnetic piston to confirm retraction before the next cycle.
Replacing the Airtac SU32~50 Standard Cylinder SU40X330S with the SAU40X330S
To replace this SU40X330S, order the SAU40X330S, confirming the 40mm bore, 330mm stroke, 1/4" port, and SC-series mounting hardware are retained. If your machine relied on the -S magnet for positioning, you must upgrade your switches from the legacy CS1-B/DS1-B to the modern CMSG/DMSG/EMSG family. For loads needing 879N at 0.7MPa, step up to a 50mm bore; if 40mm is too large, a 32mm bore provides 402N. At 330mm, avoid side-load rod-bending by fitting an external guide. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so add an external rod lock for held loads. If you need self-switching, explore the SAUF valve-integrated option.
Replacement checklist
- ✓ Same bore / stroke → SAU40X330S
- ✓ 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 SU40X330S FAQ
Yes, the SU40X330S is discontinued. The direct replacement is the AirTAC SAU40X330S. It matches the 40mm bore, 330mm stroke, 1/4" port, output force, and SC-series mounting, so it drops right into the same application.
The SAU40X330S provides 628N push and 528N pull at 0.5MPa, 879N at 0.7MPa, and a 128kgf maximum at 1.0MPa. Because your SU40X330S has a magnet, the legacy CS1-B/DS1-B switches are obsolete; you must use the current CMSG/DMSG/EMSG sensors on the SAU replacement.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X330S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X330S replacement — usually within 7-8 hours.