This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X6, 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 SU40X6
The AirTAC SU32~50 Standard Cylinder SU40X6 is a double-acting profile-type standard cylinder with a Ø40mm bore and 6mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X6, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke6 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X6
- 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 SU40X6
The AirTAC SU40X6 is a discontinued double-acting profile-type cylinder with a 40mm bore and 6mm stroke. It delivers 628 N push force at 0.5 MPa through a 1/4" port. AirTAC replaced this unit with the SAU40X6, a direct alternative retaining the exact bore, stroke, output force, port size and SC-series mounting.
Because this is a non-magnet SKU, it cannot accept a sensor. The SAU upgrade uses modern CMSG/DMSG/EMSG switches and adds a SAUF valve-integrated option the SU lacked.
Airtac SU32~50 Standard Cylinder SU40X6 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X6 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X6 |
| Bore size | Ø40 mm |
| Stroke | 6 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 SAU40X6 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 SAU40X6 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 SU40X6
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×6 | 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 SU40X6 Is Used
Short-Stroke Ejector
Ideal for popping small parts out of molds or fixtures using a fast 6mm jab with 628 N of push force at 0.5 MPa.
Clamping Pin
Provides compact 40mm profile clamping where space is tight, securing light workpieces without needing a long stroke.
Replacing the Airtac SU32~50 Standard Cylinder SU40X6 with the SAU40X6
To replace this discontinued SU40X6, order the SAU40X6 direct equivalent. Verify your 1/4" port thread (PT, G or NPT) and SC-series mounting (LB/FA/FB/CA/CB). This non-magnet version cannot hold a sensor; if you need position detection on the SAU, specify the -S option and migrate to CMSG/DMSG/EMSG switches. For loads needing 879 N at 0.7 MPa, step up to a 50mm bore; if 628 N is excessive, a 32mm bore provides 402 N. Note: a plain cylinder drifts without live air, so use an external rod lock or pilot-operated check valve for load holding. The SAUF variant offers a built-in 4M solenoid valve if self-switching is desired.
Replacement checklist
- ✓ Same bore / stroke → SAU40X6
- ✓ 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 SU40X6 FAQ
Yes, the AirTAC SU40X6 is discontinued. The direct replacement is the SAU40X6. It shares the same 40mm bore, 6mm stroke, 628 N force, 1/4" port and SC-series mounting, so it fits the same application directly.
At 0.5 MPa it pushes 628 N and pulls 528 N; at 0.7 MPa it pushes 879 N, with a theoretical max of 128 kgf at 1.0 MPa. The air cushion only decelerates the piston near stroke end; without live air the cylinder drifts, so use an external rod lock or pilot-operated check valve for load holding.
Request a Quote for the SAU40X6
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X6 replacement — usually within 7-8 hours.