This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X650SH, 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 SU40X650SH
The AirTAC SU32~50 Standard Cylinder SU40X650SH 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 SAU40X650SH, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke650 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X650SH
- 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 SU40X650SH
The AirTAC SU40X650SH is a discontinued double-acting profile-type cylinder with a 40mm bore and 650mm stroke. Delivering 628N push force at 0.5MPa, it features an extruded aluminum barrel that is more compact than an ISO 15552 unit of the same size. The direct replacement is the SAU40X650SH, which preserves the exact bore, stroke, output force, 1/4" port, and SC-series mounting. This SU variant includes a high-temperature Viton H seal (0-150C) and a piston magnet.
When upgrading to the SAU, the body dimensions and 21mm adjustable cushions remain identical, but the legacy CS1-B/DS1-B sensors are replaced by the modern CMSG/DMSG/EMSG switch family. The SAU line also introduces a SAUF variant with a built-in 4M solenoid valve that the SU never offered.
Airtac SU32~50 Standard Cylinder SU40X650SH Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X650SH |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X650SH |
| 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 SAU40X650SH 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 SAU40X650SH 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 SU40X650SH
| 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 SU40X650SH Is Used
High-Temp Diverters
Actuating routing gates on warm material conveyors where the Viton H seal survives ambient heat that degrades standard NBR rubber.
Extended Push-Out Arms
Ejecting palletized goods from storage lanes, utilizing the 650mm stroke while an external guide absorbs lateral pallet weight.
Oven Door Mechanisms
Opening and closing access panels on industrial curing ovens, relying on the 0-150C temperature rating for continuous operation.
Replacing the Airtac SU32~50 Standard Cylinder SU40X650SH with the SAU40X650SH
To replace this discontinued SU40X650SH, order the SAU40X650SH direct equivalent, verifying the 1/4" port, M12x1.25 rod thread, and SC-series mounting hardware. Because this SKU has a magnet, note that your legacy CS1-B/DS1-B switches must change to CMSG/DMSG/EMSG sensors on the new cylinder. The H high-temp Viton seal handles up to 150C. For forces, this 40mm bore yields 628N push at 0.5MPa; if you need less force, step down to a 32mm bore (402N), or step up to a 50mm bore (982N) for heavier loads. With the 650mm stroke, external guides are strongly recommended to prevent rod bending and side-load damage. Finally, a standard cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot-operated check valve for secure load holding.
Replacement checklist
- ✓ Same bore / stroke → SAU40X650SH
- ✓ 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 SU40X650SH FAQ
Yes, the SU40X650SH is discontinued. The direct replacement is the AirTAC SAU40X650SH. It matches the 40mm bore, 650mm stroke, 1/4" port, and SC-series mounting. Your existing legacy CS1-B/DS1-B switches must be upgraded to CMSG/DMSG/EMSG sensors.
This double-acting cylinder uses a 1/4" air port. 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. The 21mm cushions only decelerate the load; they do not hold it without live air.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X650SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X650SH replacement — usually within 7-8 hours.