This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X55, 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 SU50X55
The AirTAC Airtac SU32~50 Standard Cylinder SU50X55 is a double-acting profile-type standard cylinder with a Ø50mm bore and 55mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X55, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke55 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X55
- 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 SU50X55
The AirTAC SU50X55 is a discontinued double-acting profile-type cylinder with a 50mm bore and 55mm stroke. Delivering 982N push force at 0.5MPa, its extruded aluminum barrel is more compact than an ISO 15552 unit of the same size. AirTAC replaced this with the SAU50X55 direct replacement, matching the exact bore, stroke, output force, 1/4" port and SC-series mounting.
Because this SKU lacks a magnet, it cannot accept a sensor. The SAU upgrade uses current CMSG/DMSG/EMSG switches, and adds a SAUF built-in-valve option. Note that a plain cylinder drifts on air loss; the cushion only decelerates.
Airtac SU32~50 Standard Cylinder SU50X55 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X55 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X55 |
| Bore size | Ø50 mm |
| Stroke | 55 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 SAU50X55 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 SAU50X55 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 SU50X55
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×55 | 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 SU50X55 Is Used
Clamping Mechanisms
Ideal for securing mid-weight workpieces during machining, using its 982N push force at 0.5MPa to hold parts firmly against fixture stops.
Short-Stroke Diverting
Provides rapid actuation for routing packages on a production line, where the 55mm stroke and 30-800mm/s speed range offer snappy transitions.
Product Ejection
Delivers the quick impact needed to push finished goods off an assembly table, taking advantage of the compact profile body to fit tight spaces.
Replacing the Airtac SU32~50 Standard Cylinder SU50X55 with the SAU50X55
To replace the discontinued SU50X55, order the SAU50X55 direct equivalent, confirming the 1/4" port, M16x1.5 rod thread, and SC-series mounting (LB/FA/FB/CA/CB). This non-magnetic SKU cannot take a switch, but if sensing is needed, the SAU uses CMSG/DMSG/EMSG sensors. For sizing both ways: a 40mm bore yields 628N push at 0.5MPa, while a 63mm bore yields 1559N. At 55mm stroke, side-load risk is minimal. If you need self-switching, the SAUF variant integrates a 4M solenoid valve. Remember, the cushion only decelerates; use an external rod lock or pilot-operated check valve to hold loads securely.
Replacement checklist
- ✓ Same bore / stroke → SAU50X55
- ✓ 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 SU50X55 FAQ
Yes, the SU50X55 is discontinued. The direct replacement is the AirTAC SAU50X55. It shares the identical 50mm bore, 55mm stroke, 1/4" port, output force, and SC-series mounting accessories, so it bolts right in without modifications.
It delivers 982N push and 825N pull at 0.5MPa, 1374N push at 0.7MPa, and a theoretical max of 200kgf at 1.0MPa. This specific SKU has no magnet and cannot accept a sensor. If you need position detection, the SAU replacement supports CMSG/DMSG/EMSG switches.
Request a Quote for the SAU50X55
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X55 replacement — usually within 7-8 hours.