This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X185S, 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 SU50X185S
The AirTAC SU32~50 Standard Cylinder SU50X185S is a double-acting profile-type standard cylinder with a Ø50mm bore and 185mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X185S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke185 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X185S
- 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 SU50X185S
The AirTAC SU50X185S is a discontinued double-acting profile-type cylinder with a 50mm bore, 185mm stroke, and a piston magnet. Delivering 982 N of push force at 0.5 MPa, it features an extruded aluminum barrel with adjustable air cushions at both ends. AirTAC replaced this legacy unit with the SAU50X185S, a direct replacement retaining the exact bore, stroke, output force, 1/4" port, and SC-series mounting compatibility.
Because the original extruded profile is shorter than an equivalent ISO 15552 cylinder of the same bore, it saves machine space. The SAU upgrade retains this compact footprint while modernizing the sensor groove: the original -S magnet worked with legacy CS1-B/DS1-B switches, but the SAU replacement requires current CMSG/DMSG/EMSG sensors. The SAU family also introduces a SAUF variant with a built-in 4M solenoid valve that the SU line never offered.
Airtac SU32~50 Standard Cylinder SU50X185S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X185S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X185S |
| Bore size | Ø50 mm |
| Stroke | 185 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 SAU50X185S 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 SAU50X185S 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 SU50X185S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×185 | 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 SU50X185S Is Used
Package Diverting
Actuates diverting arms on packaging lines using the 982 N push force to redirect cartons reliably at operating pressures.
Clamping Fixtures
Holds workpieces in machining stations where the 825 N pull force at 0.5 MPa secures parts without deforming them.
Replacing the Airtac SU32~50 Standard Cylinder SU50X185S with the SAU50X185S
To replace the discontinued SU50X185S, order the SAU50X185S. Confirm 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) — all carry over directly. If your machine relied on the -S magnet for positioning, note that your legacy CS1-B/DS1-B switches will not fit the SAU; you must upgrade to CMSG, DMSG, or EMSG sensors. For load sizing, this 50mm bore outputs 982 N push and 825 N pull at 0.5 MPa. If you need less force, a 40mm bore provides 628 N push; for heavier loads, a 63mm bore yields 1559 N. At 185mm, side-load stress is low, but always guide the rod to prevent binding. A plain cylinder drifts on air loss — the cushions only decelerate near stroke end, so use an external rod lock or pilot-operated check valve for secure load holding. If you want to simplify plumbing, consider the SAUF variant with its integrated valve.
Replacement checklist
- ✓ Same bore / stroke → SAU50X185S
- ✓ 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 SU50X185S FAQ
Yes, the SU50X185S is discontinued. The direct replacement is the AirTAC SAU50X185S. It shares the identical 50mm bore, 185mm stroke, output force, 1/4" port, and SC-series mounting, so it fits the same application. You just order the SAU equivalent.
The 50mm bore 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 this is an -S magnet model, it used legacy CS1-B/DS1-B switches. The SAU replacement requires upgrading to CMSG, DMSG, or EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU50X185S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X185S replacement — usually within 7-8 hours.