This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X50N, 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 SU40X50N
The AirTAC SU32~50 Standard Cylinder SU40X50N is a double-acting profile-type standard cylinder with a Ø40mm bore and 50mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X50N, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke50 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X50N
- 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 SU40X50N
The AirTAC SU40X50N is a discontinued double-acting profile-type cylinder with a 40mm bore and 50mm stroke. It delivers 628N push force at 0.5MPa via a 1/4" port. The direct replacement is the SAU40X50N, matching the exact body, stroke, force, and SC-series mounting.
This NBR-sealed unit lacks a magnet, so it cannot accept magnetic switches. For sensing, the SAU upgrade uses modern CMSG/DMSG/EMSG sensors. Note that cushions only decelerate; use a rod lock for load holding.
Airtac SU32~50 Standard Cylinder SU40X50N Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X50N |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X50N |
| Bore size | Ø40 mm |
| Stroke | 50 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 SAU40X50N 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 SAU40X50N 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 SU40X50N
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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 SU40X50N Is Used
Small Part Clamping
Ideal for securing 32kg workpieces in machining fixtures, utilizing the 628N push force at 0.5MPa for reliable holding.
Package Diverting
Short 50mm stroke perfectly suited for actuating lightweight routing gates on 1/4" port-powered pneumatic conveyor lines.
Bin Push-Off
Compact profile body fits tight sorting stations, ejecting components with a safe 377N working load capacity.
Replacing the Airtac SU32~50 Standard Cylinder SU40X50N with the SAU40X50N
To replace this discontinued SU40X50N, order the SAU40X50N direct equivalent. Verify your 1/4" port, M12x1.25 rod thread, and SC-series mounting. Because this SKU has no -S magnet, it cannot support sensors; if you need position detection, the SAU replacement requires CMSG/DMSG/EMSG switches. For sizing both ways: a 32mm bore offers 402N push at 0.5MPa, while a 50mm bore provides 982N. The 50mm stroke avoids side-load rod-bending risks seen in longer strokes. The SAUF variant adds a built-in valve the SU lacked. Remember, standard air cushions only decelerate; install an external pilot-operated check valve to hold loads securely.
Replacement checklist
- ✓ Same bore / stroke → SAU40X50N
- ✓ 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 SU40X50N FAQ
Yes, the SU40X50N is discontinued. The direct replacement is the SAU40X50N, which shares the same 40mm bore, 50mm stroke, 628N force, 1/4" port, and SC-series mounting.
It delivers 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, and a 128kgf max at 1.0MPa. This NBR-sealed SKU lacks a magnet and cannot take sensors; the SAU replacement uses CMSG/DMSG/EMSG switches.
Request a Quote for the SAU40X50N
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X50N replacement — usually within 7-8 hours.