This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X85STC, 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 SU40X85STC
The AirTAC Airtac SU32~50 Standard Cylinder SU40X85STC is a double-acting profile-type standard cylinder with a Ø40mm bore and 85mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X85STC, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke85 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X85STC
- 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 SU40X85STC
The AirTAC SU40X85STC is a discontinued double-acting profile-type cylinder with an 85mm stroke. It delivers 628N push and 528N pull at 0.5MPa via a 1/4" port. AirTAC replaced it with the SAU40X85STC, a direct upgrade retaining the exact bore, stroke, force, port and SC-series TC mounting.
This compact extruded-aluminium body is shorter than an ISO 15552 equivalent. The 85mm stroke is non-standard, meaning a custom rod was cut. The original -S magnet used legacy CS1-B/DS1-B switches, whereas the SAU replacement uses current CMSG/DMSG/EMSG sensors and adds a SAUF built-in-valve option.
Airtac SU32~50 Standard Cylinder SU40X85STC Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X85STC |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X85STC |
| Bore size | Ø40 mm |
| Stroke | 85 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 SAU40X85STC 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 SAU40X85STC 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 SU40X85STC
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | 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 SU40X85STC Is Used
Clamp Actuation
Provides 628N of push force at 0.5MPa to secure medium workpieces during machining operations.
Package Diverting
Uses the 85mm stroke and TC mount to push lightweight cartons off a production line efficiently.
Replacing the Airtac SU32~50 Standard Cylinder SU40X85STC with the SAU40X85STC
To replace this discontinued SU40X85STC, order the SAU40X85STC. Confirm the 40mm bore, 85mm non-standard stroke, 1/4" port (default PT thread) and M12x1.25 rod thread. Because it uses a TC mount, your existing SC-series accessories fit perfectly. If stepping up to a 50mm bore gives 982N push at 0.5MPa, while dropping to 32mm yields 402N. The -S magnet means you must upgrade sensors: legacy CS1-B/DS1-B switches are replaced by CMSG/DMSG/EMSG on the SAU. A plain cylinder drifts without live air, so use an external rod lock or pilot-operated check valve for load holding. For space-constrained setups, consider the SAUF variant with its built-in 4M solenoid valve.
Replacement checklist
- ✓ Same bore / stroke → SAU40X85STC
- ✓ 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 SU40X85STC FAQ
Yes, the SU40X85STC is discontinued. The direct replacement is the SAU40X85STC. It shares the same 40mm bore, 85mm stroke, 628N force, 1/4" port and TC mounting, so it drops right into your existing assembly.
It delivers 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, and a theoretical max of 128kgf at 1.0MPa. The -S magnet on this legacy SU works with CS1-B/DS1-B switches; the SAU replacement requires CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X85STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X85STC replacement — usually within 7-8 hours.