This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X310S, 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 SU40X310S
The AirTAC SU32~50 Standard Cylinder SU40X310S is a double-acting profile-type standard cylinder with a Ø40mm bore and 310mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X310S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke310 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X310S
- 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 SU40X310S
The AirTAC SU40X310S is a discontinued double-acting profile-type cylinder with a 40mm bore and 310mm stroke. It delivers 628N push force at 0.5MPa via a 1/4" port. AirTAC replaced this unit with the SAU40X310S, a direct upgrade retaining the exact body, stroke, force, and SC-series mounting.
The SAU upgrade switches the legacy CS1-B/DS1-B sensors to modern CMSG/DMSG/EMSG switches, and introduces the SAUF built-in-valve option. Because the 310mm stroke invites rod bending, use external guides to prevent side loads.
Airtac SU32~50 Standard Cylinder SU40X310S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X310S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X310S |
| Bore size | Ø40 mm |
| Stroke | 310 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 SAU40X310S 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 SAU40X310S 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 SU40X310S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×310 | 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 SU40X310S Is Used
Package Diverting
Pushes light cartons off a sorting line using the 628N push force at 0.5MPa, with the 310mm stroke clearing guide rails.
Pallet Stops
Acts as a pneumatic stop for inbound pallets, safely handling loads up to the 32kg vertical lift threshold.
Component Ejection
Ejects machined parts from a fixture, relying on adjustable 21mm cushions to decelerate the rod at stroke ends.
Replacing the Airtac SU32~50 Standard Cylinder SU40X310S with the SAU40X310S
To replace this discontinued SU40X310S, order the SAU40X310S direct equivalent, verifying your 1/4" port, M12x1.25 rod thread, and SC-series mounts. If moving down to a 32mm bore yields insufficient force (402N push at 0.5MPa), stepping up to a 50mm bore provides 982N. Note that the -S magnet requires switching to CMSG/DMSG/EMSG sensors on the SAU. For the 310mm stroke, add external guides to prevent rod bending. A plain cylinder drifts on air loss; use a pilot-operated check valve or rod lock for load holding. The SAUF variant adds a built-in valve if needed.
Replacement checklist
- ✓ Same bore / stroke → SAU40X310S
- ✓ 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 SU40X310S FAQ
Yes, the SU40X310S is discontinued. The direct replacement is the SAU40X310S, which shares the same 40mm bore, 310mm stroke, 1/4" port, output force, and SC-series mounting accessories.
It provides 628N push and 528N pull at 0.5MPa, 879N at 0.7MPa, and a 128kgf maximum at 1.0MPa. The -S magnet on this SU worked with CS1-B/DS1-B switches; the SAU replacement requires CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X310S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X310S replacement — usually within 7-8 hours.