This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X650S, 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 SU40X650S
The AirTAC SU32~50 Standard Cylinder SU40X650S is a double-acting profile-type standard cylinder with a Ø40mm bore and 650mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X650S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke650 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X650S
- 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 SU40X650S
The AirTAC SU40X650S is a discontinued double-acting profile cylinder with a 40mm bore and 650mm stroke. Delivering 628N push and 528N pull at 0.5MPa, its direct replacement is the SAU40X650S, retaining the 1/4" port, M12x1.25 rod thread, and SC-series mounting.
The SAU upgrade introduces CMSG/DMSG/EMSG sensors to replace this unit's legacy CS1-B/DS1-B switches, and offers a SAUF built-in-valve option the SU lacked.
Airtac SU32~50 Standard Cylinder SU40X650S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X650S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X650S |
| Bore size | Ø40 mm |
| Stroke | 650 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 SAU40X650S 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 SAU40X650S 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 SU40X650S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×650 | 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 SU40X650S Is Used
Long-Stroke Diversion
Pushes packages across a 650mm transfer belt with a safe 377N working load, utilizing adjustable cushions to stop smoothly.
Component Ejection
Cycles at 30-800 mm/s to eject machined parts from a fixture, taking advantage of the compact profile body to save space.
Replacing the Airtac SU32~50 Standard Cylinder SU40X650S with the SAU40X650S
To replace this SU40X650S, order the SAU40X650S direct: it matches the 40mm bore, 650mm stroke, 1/4" port, and SC-series mounts. Because this SKU includes a magnet (-S), note the sensor family changes from CS1-B/DS1-B to CMSG/DMSG/EMSG. Sizing both ways, the neighboring 32mm bore provides 402N [email protected], while the 50mm bore offers 982N. At 650mm, prevent rod bending by adding an external guide to absorb side loads. The cushion only decelerates; for load holding on air loss, install an external rod lock or pilot-operated check valve.
Replacement checklist
- ✓ Same bore / stroke → SAU40X650S
- ✓ 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 SU40X650S FAQ
Yes, the SU40X650S is discontinued. The direct replacement is the AirTAC SAU40X650S. It provides identical bore, stroke, force, 1/4" port, and SC-series mounting compatibility, but uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
The 40mm bore features a 1/4" port. It delivers 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, 1130N push at 0.9MPa, and a theoretical max of 128 kgf at 1.0 MPa.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X650S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X650S replacement — usually within 7-8 hours.