This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X185S, 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 SU40X185S
The AirTAC SU32~50 Standard Cylinder SU40X185S is a double-acting profile-type standard cylinder with a Ø40mm bore and 185mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X185S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke185 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X185S
- 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 SU40X185S
The AirTAC SU40X185S is a discontinued double-acting profile-type cylinder with a 40mm bore and 185mm stroke. It delivers 628N push and 528N pull at 0.5MPa through a 1/4" port. AirTAC replaced this unit with the SAU40X185S, a direct upgrade sharing the exact bore, stroke, output force, and SC-series mounting footprint.
Because the body, cushions, and M12x1.25 rod thread are unchanged, you can swap it without machining. The SAU upgrade does switch the sensor family from the legacy CS1-B/DS1-B to the current CMSG/DMSG/EMSG switches, and introduces the SAUF valve-integrated option.
Airtac SU32~50 Standard Cylinder SU40X185S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X185S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X185S |
| Bore size | Ø40 mm |
| Stroke | 185 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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 SAU40X185S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The SAU40X185S 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 SU40X185S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | 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 SU40X185S Is Used
Package Diverting
Pushes light cartons off a sorting line using a safe 377N working load, with the 185mm stroke clearing side guides.
Pallet Stops
Acts as a pneumatic stop for low-profile pallets, retracting into a compact profile body to save floor space.
Clamp Actuation
Drives small fixturing clamps delivering 528N pull force at 0.5MPa, holding parts firmly for machining.
Replacing the Airtac SU32~50 Standard Cylinder SU40X185S with the SAU40X185S
To replace this SU40X185S, order the SAU40X185S and verify your 1/4" port, M12x1.25 rod thread, and SC-series mount (LB/FA/FB/CA/CB/TC). Because this SKU includes the -S magnet, note that your old CS1-B/DS1-B switches will not fit the SAU; you must upgrade to CMSG/DMSG/EMSG sensors. If you need to hold a load mid-stroke, a standard cylinder drifts without live air—the cushions only decelerate—so add an external rod lock or pilot-operated check valve. For sizing alternatives, dropping to a 32mm bore yields 402N push, while stepping up to a 50mm bore provides 982N. At 185mm stroke, side-load is minimal, but always guide the rod to prevent bending.
Replacement checklist
- ✓ Same bore / stroke → SAU40X185S
- ✓ 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 SU40X185S FAQ
Yes, the SU40X185S is discontinued. The direct replacement is the AirTAC SAU40X185S. It shares the same 40mm bore, 185mm stroke, 628N push force, 1/4" port, and SC-series mounting, so no mechanical modifications are needed.
At 0.5MPa it provides 628N push and 528N pull; at 0.7MPa it pushes 879N, with a theoretical max of 128kgf at 1.0MPa. Because this is an -S model with a magnet, the original CS1-B/DS1-B switches must be replaced by CMSG/DMSG/EMSG sensors on the new SAU.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X185S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X185S replacement — usually within 7-8 hours.