This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X550S, 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 SU50X550S
The AirTAC SU32~50 Standard Cylinder SU50X550S is a double-acting profile-type standard cylinder with a Ø50mm bore and 550mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X550S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke550 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X550S
- 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 SU50X550S
The AirTAC SU50X550S is a discontinued double-acting profile-type cylinder with a 50mm bore and 550mm stroke. Built with an extruded aluminum barrel and adjustable air cushions at both ends, it is shorter and more compact than an ISO 15552 cylinder of the same bore. It delivers a push force of 982 N and pull of 825 N at 0.5 MPa, operating on a 1/4" port with a 20mm piston rod.
AirTAC replaced this end-of-life unit with the SAU50X550S, a direct replacement retaining the exact same body profile, bore, stroke, force, port size, and SC-series mounting. The SAU upgrade introduces current CMSG/DMSG/EMSG sensors to replace this model's legacy CS1-B/DS1-B switches, and adds an optional SAUF variant with a built-in 4M solenoid valve the SU line lacked.
Airtac SU32~50 Standard Cylinder SU50X550S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X550S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X550S |
| Bore size | Ø50 mm |
| Stroke | 550 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 SAU50X550S 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 SAU50X550S 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 SU50X550S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×550 | 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 SU50X550S Is Used
Package Diversion
Pushes medium-weight cartons off a main conveyor line using the 982 N push force at 0.5 MPa, with the 550mm stroke clearing adjacent lanes.
Component Ejection
Ejects molded parts from a press bed, relying on the 21mm adjustable air cushions at both ends to decelerate the 20mm rod smoothly at high speed.
Replacing the Airtac SU32~50 Standard Cylinder SU50X550S with the SAU50X550S
To replace this discontinued SU50X550S, order the SAU50X550S direct equivalent, verifying your 1/4" port thread (PT, G, or NPT), M16x1.5 rod-end thread, and SC-series mounting accessories (LB, FA, FB, CA, CB, TC). Because this SKU includes a magnet (-S), note that your legacy CS1-B/DS1-B switches are incompatible with the SAU; you must upgrade to CMSG/DMSG/EMSG sensors. If your application needs a self-switching function, consider the SAUF variant with its integrated 4M valve. For sizing alternatives, a 40mm bore provides 628 N push at 0.5 MPa, while a 63mm bore offers 1559 N. Remember that a plain cylinder does not hold load on air loss—the cushion only decelerates—so use an external rod lock or pilot-operated check valve for suspended loads. Finally, at 550mm, this long stroke is susceptible to rod bending; use external guides to prevent side-load damage.
Replacement checklist
- ✓ Same bore / stroke → SAU50X550S
- ✓ 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 SU50X550S FAQ
Yes, the AirTAC SU50X550S is discontinued. The direct replacement is the SAU50X550S. It shares the identical 50mm bore, 550mm stroke, output force, 1/4" port, and SC-series mounting, so it fits the same application. You simply order the SAU equivalent.
The cylinder provides 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and a theoretical max of 200 kgf at 1.0 MPa. Because your SU model has a magnet (-S), note that the SAU replacement requires upgrading from legacy CS1-B/DS1-B switches to the current CMSG/DMSG/EMSG sensor family.
Related AirTAC SAU Cylinders
Request a Quote for the SAU50X550S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X550S replacement — usually within 7-8 hours.