This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X140, 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 SU40X140
The AirTAC Airtac SU32~50 Standard Cylinder SU40X140 is a double-acting profile-type standard cylinder with a Ø40mm bore and 140mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X140, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke140 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X140
- 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 SU40X140
The AirTAC SU40X140 is a discontinued double-acting profile-type cylinder with a 40mm bore and 140mm stroke. Delivering 628N push force at 0.5MPa via a 1/4" port, its extruded aluminum body is more compact than an ISO 15552 unit of the same bore. The direct replacement is the SAU40X140, matching the exact stroke, force, port size, and SC-series mounting.
When upgrading to the SAU40X140, note the sensor family changes if you previously used magnetic switches (this no-magnet SU SKU cannot take a sensor anyway). The SAU also introduces a SAUF variant with a built-in 4M solenoid valve the SU lacked.
Airtac SU32~50 Standard Cylinder SU40X140 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X140 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X140 |
| Bore size | Ø40 mm |
| Stroke | 140 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 SAU40X140 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 SAU40X140 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 SU40X140
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×140 | 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 SU40X140 Is Used
Package Diverting
Actuates routing gates on 40mm belt conveyors, providing the 628N push force needed to redirect moderate-weight cartons at sorting hubs.
Pallet Stacking
Drives vertical lifting arms for tiered pallet loading, safely handling components up to the 32kg vertical lift threshold within compact machine frames.
Clamp Actuation
Secures aluminum extrusions during CNC machining operations, utilizing the 140mm stroke to clear the work envelope for robotic loading.
Replacing the Airtac SU32~50 Standard Cylinder SU40X140 with the SAU40X140
To replace this SU40X140, order the SAU40X140. Verify your 1/4" port thread (PT, G, or NPT) and M12x1.25 rod-end thread. Because this specific SKU lacks a magnet (-S), it cannot accept a sensor; if sensing is needed on the new unit, specify an SAU40X140S and migrate from legacy CS1-B/DS1-B switches to the current CMSG/DMSG/EMSG family. If your 140mm stroke is insufficient, the neighboring 50mm bore yields 982N push at 0.5MPa, while dropping to a 32mm bore reduces force to 402N. Remember, a standard cylinder drifts without live air—the 21mm adjustable cushions only decelerate at stroke end, so use an external rod lock or pilot-operated check valve for secure load holding. The SAUF valve-integrated option can also simplify plumbing if you need self-switching.
Replacement checklist
- ✓ Same bore / stroke → SAU40X140
- ✓ 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 SU40X140 FAQ
Yes, the SU40X140 is end-of-life. The direct replacement is the AirTAC SAU40X140. It shares the identical 40mm bore, 140mm stroke, 628N output force, 1/4" port, and SC-series mounting accessories, fitting the same application envelope without mechanical modifications.
At 0.5MPa it provides 628N push and 528N pull force, increasing to 879N push at 0.7MPa, with a theoretical maximum of 128kgf at 1.0MPa. Because this specific SKU lacks a magnet, it cannot accept a sensor; if sensing is required, order the SAU40X140S replacement and use CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B.
Request a Quote for the SAU40X140
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X140 replacement — usually within 7-8 hours.