This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X50H, 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 SU40X50H
The AirTAC SU32~50 Standard Cylinder SU40X50H 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 SAU40X50H, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke50 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X50H
- 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 SU40X50H
The AirTAC SU40X50H is a discontinued double-acting profile-type cylinder with a 40mm bore, 50mm stroke, and high-temperature Viton H seals rated for 0-150 C. It delivers 628 N push force at 0.5 MPa via a 1/4 inch port. AirTAC replaced this legacy unit with the SAU40X50H, a direct replacement retaining the exact bore, stroke, force, port, and SC-series mounting.
Because this SKU lacks a magnet, it cannot accept position sensors. The SAU upgrade introduces the SAUF variant with a built-in 4M solenoid valve, a feature the original SU line never offered.
Airtac SU32~50 Standard Cylinder SU40X50H Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X50H |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X50H |
| 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 SAU40X50H 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 SAU40X50H 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 SU40X50H
| 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 SU40X50H Is Used
Hot End Ejection
Clamp and eject small molded parts in heated environments using the Viton H seals rated for 150 C, providing reliable 628 N push force.
Compact Stops
Deploy as a short-stroke 50mm pallet stop in tight transfer stations, reusing existing SC-series mounting brackets for easy retrofits.
Replacing the Airtac SU32~50 Standard Cylinder SU40X50H with the SAU40X50H
To replace this discontinued SU40X50H, order the SAU40X50H direct equivalent, matching the 40mm bore, 50mm stroke, M12x1.25 rod thread, 1/4 inch port, and SC-series mounting hardware. If your machine needs position sensing, note this no-magnet SKU cannot support switches; you must specify an SAU model with a magnet, which upgrades the sensor family from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches. For higher force needs, step up to a 50mm bore (982 N push at 0.5 MPa); for lighter duties, a 32mm bore provides 402 N. The Viton H seal allows 0-150 C operation. Since this is a double-acting cylinder, air cushions only decelerate the piston near stroke end; they do not hold loads on air loss. For vertical or suspended loads, install an external rod lock or pilot-operated check valve. The compact 50mm stroke keeps side-load risks low, but always guide the rod to prevent bending. If you want to simplify plumbing, consider the SAUF40X50H valve-integrated version.
Replacement checklist
- ✓ Same bore / stroke → SAU40X50H
- ✓ 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 SU40X50H FAQ
Yes, the SU40X50H is discontinued. The direct replacement is the AirTAC SAU40X50H. It matches the 40mm bore, 50mm stroke, 1/4 inch port, Viton H high-temp seal, and SC-series mounting, so it fits the same envelope without modifications.
At 0.5 MPa it provides 628 N push and 528 N pull force, rising to 879 N push at 0.7 MPa and 1130 N at 0.9 MPa, with a theoretical max of 128 kgf at 1.0 MPa. This specific SKU has no magnet, so it cannot accept position sensors; the SAU replacement uses CMSG/DMSG/EMSG switches if you order the -S variant.
Request a Quote for the SAU40X50H
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X50H replacement — usually within 7-8 hours.