This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X650, 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 SU40X650
The AirTAC Airtac SU32~50 Standard Cylinder SU40X650 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 SAU40X650, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke650 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X650
- 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 SU40X650
The AirTAC SU40X650 is a discontinued double-acting profile-type cylinder featuring a 40mm bore and 650mm stroke. Built with an extruded aluminum barrel, it is more compact than an ISO 15552 unit of the same bore and delivers 628 N push force at 0.5 MPa. AirTAC replaced this legacy unit with the SAU40X650, a direct replacement retaining the exact bore, stroke, output force, 1/4" port, and SC-series mounting.
Because this SKU lacks a magnet (-S), it cannot accept a magnetic switch. The SAU upgrade uses current CMSG/DMSG/EMSG sensors and introduces the SAUF built-in-valve option the SU line never had.
Airtac SU32~50 Standard Cylinder SU40X650 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X650 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X650 |
| 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 SAU40X650 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 SAU40X650 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 SU40X650
| 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 SU40X650 Is Used
Package Diversion
Pushes lightweight cartons at 30-800 mm/s across sorting lines, utilizing the 628 N push force to deflect goods without damaging packaging.
Pallet Push-Off
Actuates 650mm to eject stacked goods from low-friction rollers, requiring external guides to manage the long stroke and prevent rod bending.
Gate Actuation
Drives material handling gates through a 650mm span, taking advantage of the compact profile body to save space in tight conveyor frames.
Replacing the Airtac SU32~50 Standard Cylinder SU40X650 with the SAU40X650
To replace the SU40X650, order the SAU40X650 direct equivalent, matching the 40mm bore, 650mm stroke, M12x1.25 rod thread, 1/4" port, and SC-series mounting. Since this is a non-magnetized SKU, it cannot support sensors; if sensing is needed, specify an SAU-S model and use CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B. When sizing, the 40mm bore yields 628 N push at 0.5 MPa, while a neighboring 50mm bore provides 982 N. At 650mm, add external guides to prevent rod bending under side loads. Note that a plain cylinder drifts on air loss; use an external rod lock or pilot-operated check valve for load holding.
Replacement checklist
- ✓ Same bore / stroke → SAU40X650
- ✓ 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 SU40X650 FAQ
Yes, the AirTAC SU40X650 is discontinued and end-of-life. The direct replacement is the SAU40X650. It shares the identical 40mm bore, 650mm stroke, 1/4" port, output force, and SC-series mounting accessories, so it fits the same application directly.
At 0.5 MPa it provides 628 N push and 528 N pull; 879 N push at 0.7 MPa; 1130 N at 0.9 MPa; with a theoretical max of 128 kgf at 1.0 MPa. The 21mm adjustable air cushions only decelerate near stroke end and do not hold load on air loss—use an external rod lock or pilot-operated check valve for holding.
Request a Quote for the SAU40X650
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X650 replacement — usually within 7-8 hours.