This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X640S, 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 SU50X640S
The AirTAC SU32~50 Standard Cylinder SU50X640S is a double-acting profile-type standard cylinder with a Ø50mm bore and 640mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X640S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke640 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X640S
- 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 SU50X640S
The AirTAC SU50X640S is a discontinued double-acting profile-type cylinder featuring a 50mm bore, 640mm stroke, and a 1/4" port. Delivering 982 N of push force at 0.5 MPa, it is directly replaced by the SAU50X640S. This direct upgrade preserves the exact bore, stroke, output force, port size, and SC-series mounting, ensuring a seamless retrofit without bracket changes.
The original -S magnet functioned with legacy CS1-B/DS1-B switches, but the SAU replacement transitions to current CMSG/DMSG/EMSG sensors. Additionally, the SAU line introduces a SAUF variant with a built-in 4M solenoid valve, an integrated self-switching option the SU series never offered.
Airtac SU32~50 Standard Cylinder SU50X640S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X640S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X640S |
| Bore size | Ø50 mm |
| Stroke | 640 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M16×1.5 |
| 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 SAU50X640S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAU50X640S 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 SU50X640S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×640 | 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 SU50X640S Is Used
Pallet Push-Off
Provides the 50 kg vertical lift margin and extended reach needed to index packaged products off accumulation rollers in distribution hubs.
Multi-Stage Clamping
Acts as a remote actuator in CNC cells, using the 1/4" port and compact profile body to sequence long-travel clamping arms deep inside the machine envelope.
Replacing the Airtac SU32~50 Standard Cylinder SU50X640S with the SAU50X640S
To replace this discontinued SU50X640S, order the SAU50X640S direct equivalent, verifying the 1/4" port, M16x1.5 rod thread, and SC-series mounting (LB/FA/FB/CA/CB) match your existing jig. Because this unit has a 640mm stroke, the extended 20mm rod is susceptible to bending under lateral stress; always use an external guide rail to prevent side-load damage. If sizing neighbors, a 40mm bore yields 628 N push while a 63mm bore provides 1559 N at 0.5 MPa. Note that a standard cylinder drifts without live air—the cushion only decelerates end-of-stroke—so deploy an external rod lock or pilot-operated check valve for secure load holding. Finally, if you exploit the -S magnet, remember the SAU upgrade requires CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
Replacement checklist
- ✓ Same bore / stroke → SAU50X640S
- ✓ 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 SU50X640S FAQ
Yes, the AirTAC SU50X640S is discontinued and end-of-life. The direct replacement is the SAU50X640S. It shares the identical 50mm bore, 640mm stroke, 1/4" port, and SC-series mounting, so it fits the same application directly without mechanical modifications.
At 0.5 MPa it pushes 982 N and pulls 825 N; at 0.7 MPa it pushes 1374 N, with a theoretical max of 200 kgf at 1.0 MPa. Because this is an -S magnet model, it originally used legacy CS1-B/DS1-B switches; the SAU50X640S replacement requires the current CMSG/DMSG/EMSG sensor family.
Related AirTAC SAU Cylinders
Request a Quote for the SAU50X640S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X640S replacement — usually within 7-8 hours.