This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X185, 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 SU40X185
The AirTAC SU32~50 Standard Cylinder SU40X185 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 SAU40X185, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke185 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X185
- 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 SU40X185
The AirTAC SU40X185 is a discontinued double-acting profile-type cylinder with a 40mm bore and 185mm stroke. It delivers 628N push force at 0.5MPa via a 1/4" port. AirTAC replaced this unit with the SAU40X185, a direct upgrade retaining the exact body dimensions, stroke, output force, and SC-series mounting accessories.
This extruded aluminium body is shorter than an ISO 15552 cylinder of the same bore. Note this non-magnetic SKU cannot accept a sensor; furthermore, the SAU family uses modern CMSG/DMSG/EMSG switches and introduces the SAUF built-in valve option.
Airtac SU32~50 Standard Cylinder SU40X185 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X185 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X185 |
| 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 SAU40X185 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 SAU40X185 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 SU40X185
| 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 SU40X185 Is Used
Package Diverting
Actuates routing gates on packaging lines where 628N push force easily redirects light to medium cartons.
Stack Ejection
Pushes completed product stacks off accumulation rollers using a 185mm stroke and 528N pull force.
Replacing the Airtac SU32~50 Standard Cylinder SU40X185 with the SAU40X185
To replace this discontinued SU40X185, order the SAU40X185. Verify your 1/4" port thread (PT, G, or NPT), M12x1.25 rod end, and SC-series mounting (LB/FA/FB/CA/CB). This non-magnetic SKU cannot take a sensor, but if you upgrade to an SAU-S, you must switch from legacy CS1-B/DS1-B switches to CMSG/DMSG/EMSG. For sizing both ways: a 32mm bore offers 402N push at 0.5MPa, while a 50mm bore provides 982N. The 21mm cushions only decelerate the load; they do not hold position on air loss, so add an external rod lock or pilot-operated check valve for vertical loads. At 185mm stroke, side-load and rod-bending risks are low, but ensure proper guide alignment.
Replacement checklist
- ✓ Same bore / stroke → SAU40X185
- ✓ 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 SU40X185 FAQ
Yes, the SU40X185 is discontinued. The direct replacement is the AirTAC SAU40X185. It shares the identical 40mm bore, 185mm stroke, 1/4" port, output force, and SC-series mounting hardware, fitting the same application directly.
At 0.5MPa it provides 628N push and 528N pull; 879N push at 0.7MPa; 1130N at 0.9MPa; and a theoretical max of 128kgf at 1.0MPa. This specific non-magnetic SKU cannot accept a sensor. If sensing is required on the SAU replacement, you must use CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B.
Request a Quote for the SAU40X185
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X185 replacement — usually within 7-8 hours.