This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X85S, 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 SU50X85S
The AirTAC Airtac SU32~50 Standard Cylinder SU50X85S is a double-acting profile-type standard cylinder with a Ø50mm bore and 85mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X85S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke85 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X85S
- 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 SU50X85S
The AirTAC SU50X85S is a discontinued double-acting profile-type cylinder with an 85mm stroke and 50mm bore. It delivers 982N push force at 0.5MPa through a 1/4" port. AirTAC replaced this legacy unit with the SAU50X85S, a direct upgrade retaining the exact bore, stroke, force, port size and SC-series mounting footprint.
The SAU replacement modernizes the sensor groove: your existing -S magnet worked with legacy CS1-B/DS1-B switches, but the SAU requires current CMSG/DMSG/EMSG sensors. The SAU line also introduces a SAUF variant with a built-in 4M solenoid valve.
Airtac SU32~50 Standard Cylinder SU50X85S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X85S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X85S |
| Bore size | Ø50 mm |
| Stroke | 85 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 SAU50X85S 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 SAU50X85S 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 SU50X85S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×85 | 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 SU50X85S Is Used
Clamping Mechanisms
Ideal for securing mid-weight workpieces during machining, using the 982N push force at 0.5MPa to hold components firmly against stops.
Package Diverting
Provides reliable 85mm stroke actuation to push or redirect cartons on a production line, taking advantage of the compact profile body.
Replacing the Airtac SU32~50 Standard Cylinder SU50X85S with the SAU50X85S
To replace this SU50X85S, order the SAU50X85S. Confirm your 1/4" port thread (PT, G or NPT), M16x1.5 rod-end, and SC-series mounting (LB/FA/FB/CA/CB). Because this SKU includes the -S magnet, note the sensor family changes from CS1-B/DS1-B to CMSG/DMSG/EMSG. If sizing alternatives, a 40mm bore yields 628N push while a 63mm bore yields 1559N at 0.5MPa. The 85mm stroke is standard. A plain cylinder drifts without live air; for load holding use an external rod lock or pilot-operated check valve, as cushions only decelerate. If you need self-switching, explore the SAUF valve-integrated option.
Replacement checklist
- ✓ Same bore / stroke → SAU50X85S
- ✓ 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 SU50X85S FAQ
Yes, the SU50X85S is discontinued. The direct replacement is the AirTAC SAU50X85S. It matches the 50mm bore, 85mm stroke, 1/4" port, output force, and SC-series mounting accessories, fitting the same application directly.
At 0.5MPa it provides 982N push and 825N pull; 1374N push at 0.7MPa; 1767N at 0.9MPa; with a 200kgf max at 1.0MPa. The -S suffix denotes a piston magnet for legacy CS1-B/DS1-B switches; the SAU replacement upgrades this to CMSG/DMSG/EMSG sensors.
Request a Quote for the SAU50X85S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X85S replacement — usually within 7-8 hours.