This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X145S, 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 SU40X145S
The AirTAC Airtac SU32~50 Standard Cylinder SU40X145S is a double-acting profile-type standard cylinder with a Ø40mm bore and 145mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X145S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke145 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X145S
- 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 SU40X145S
The AirTAC SU40X145S is a discontinued double-acting profile-type cylinder with a 40mm bore and 145mm stroke. It delivers 628N push and 528N pull at 0.5MPa. The direct replacement is the SAU40X145S, matching the 1/4" port, M12x1.25 rod, and SC-series mounts.
Upgrading to the SAU40X145S preserves the compact extruded body (shorter than ISO 15552 equivalents) but changes the sensor family. The SU's -S magnet used legacy CS1-B/DS1-B switches, whereas the SAU uses current CMSG/DMSG/EMSG sensors. The SAU also introduces the SAUF built-in 4M solenoid valve variant, an option the SU line lacked. Note that the air cushion only decelerates; it does not hold loads without live air.
Airtac SU32~50 Standard Cylinder SU40X145S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X145S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X145S |
| Bore size | Ø40 mm |
| Stroke | 145 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 SAU40X145S 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 SAU40X145S 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 SU40X145S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×145 | 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 SU40X145S Is Used
Package Diverting
Provides the 32kg vertical lift margin needed to actuate routing gates and transfer small boxes between adjacent conveyor lines.
Pallet Tagging
Extends 145mm to apply identification labels or print heads against incoming pallets, fitting neatly into compact packaging machinery.
Replacing the Airtac SU32~50 Standard Cylinder SU40X145S with the SAU40X145S
To replace the SU40X145S, order the SAU40X145S direct equivalent, confirming the 1/4" port (PT/G/NPT) and SC-series mounting hardware. Because the -S magnet is present, you must swap legacy CS1-B/DS1-B switches for CMSG/DMSG/EMSG sensors. For sizing, the 40mm bore yields 628N push at 0.5MPa; if undersized, the 50mm bore provides 982N. At 145mm stroke, side-load risks are low, but always guide the rod to prevent bending. The cylinder will drift without air; use an external rod lock or pilot-operated check valve for load holding. If self-switching is needed, explore the SAUF valve-integrated variant.
Replacement checklist
- ✓ Same bore / stroke → SAU40X145S
- ✓ 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 SU40X145S FAQ
Yes, the SU40X145S is discontinued. The direct replacement is the SAU40X145S. It shares the same 40mm bore, 145mm stroke, 1/4" port, output force, and SC-series mounting accessories, so it fits the same application directly.
The 40mm bore 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 SU worked with legacy CS1-B/DS1-B switches; the SAU40X145S replacement requires current CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X145S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X145S replacement — usually within 7-8 hours.