This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X55S, 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 SU50X55S
The AirTAC Airtac SU32~50 Standard Cylinder SU50X55S 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 SAU50X55S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke55 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X55S
- 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 SU50X55S
The AirTAC SU50X55S is a discontinued double-acting profile-type cylinder with a 50mm bore and 55mm stroke, delivering 982N push force at 0.5MPa. AirTAC replaced this legacy unit with the SAU50X55S. It is a direct upgrade retaining the exact 1/4 inch port, M16x1.5 rod thread, output force and SC-series mounting footprint.
This extruded aluminium body is more compact than a standard ISO 15552 cylinder of the same bore. Note the SAU upgrade moves from legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors, and introduces the SAUF built-in valve option the SU line lacked.
Airtac SU32~50 Standard Cylinder SU50X55S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X55S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X55S |
| 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 SAU50X55S 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 SAU50X55S 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 SU50X55S
| 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 SU50X55S Is Used
Component Clamping
Ideal for securing medium workpieces during machining, using the 982N push force at 0.5MPa to hold parts firmly against a fixture stop.
Package Diverting
Provides reliable 55mm stroke actuation to push lightweight cartons off a main conveyor belt line into secondary packaging lanes.
Pallet Stops
Functions as a compact pneumatic stop gate in material handling systems, raising a 20mm rod profile to halt pallet movement on cue.
Replacing the Airtac SU32~50 Standard Cylinder SU50X55S with the SAU50X55S
To replace the SU50X55S, order the SAU50X55S direct equivalent, confirming the 50mm bore, 55mm stroke, 1/4" port and SC-series mounting hardware. Because this SKU includes the -S magnet, you must switch your legacy CS1-B/DS1-B switches to the CMSG/DMSG/EMSG family used on the SAU. If you need to adjust force, the neighbouring 40mm bore yields 628N push at 0.5MPa, while the 63mm bore provides 1559N. A plain cylinder drifts without live air, so for suspended loads add an external rod lock or pilot-operated check valve. If your cycle demands faster local actuation, explore the SAUF variant with its integrated 4M solenoid valve.
Replacement checklist
- ✓ Same bore / stroke → SAU50X55S
- ✓ 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 SU50X55S FAQ
Yes, the SU50X55S is discontinued. The direct replacement is the AirTAC SAU50X55S. It matches the 50mm bore, 55mm stroke, 982N force at 0.5MPa, 1/4" port and SC-series mounting accessories. The only change is that your -S magnet equipped version will require upgrading from legacy CS1-B/DS1-B switches to the current CMSG/DMSG/EMSG sensor family.
The 50mm bore operates on a 1/4" port with an M16x1.5 rod thread. At 0.5MPa it provides 982N push and 825N pull force. At 0.7MPa the push increases to 1374N, and at 0.9MPa it reaches 1767N. The theoretical maximum output is 200kgf at 1.0MPa. Operating speed ranges from 30-800mm/s.
Request a Quote for the SAU50X55S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X55S replacement — usually within 7-8 hours.