This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X400H, 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 SU40X400H
The AirTAC SU32~50 Standard Cylinder SU40X400H is a double-acting profile-type standard cylinder with a Ø40mm bore and 400mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X400H, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke400 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X400H
- 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 SU40X400H
The AirTAC SU40X400H is a discontinued double-acting profile cylinder with a 40mm bore and 400mm stroke. It delivers 628N push and 528N pull at 0.5MPa, featuring a 1/4" port and a Viton H high-temperature seal rated for 0-150C. The direct replacement is the SAU40X400H, matching the exact body, force, port, and SC-series mounting.
This compact extruded-aluminum body is shorter than an ISO 15552 equivalent. Note this SKU lacks a magnet and cannot accept sensors; the SAU upgrade uses CMSG/DMSG/EMSG switches and adds a SAUF built-in-valve option.
Airtac SU32~50 Standard Cylinder SU40X400H Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X400H |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X400H |
| Bore size | Ø40 mm |
| Stroke | 400 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 SAU40X400H 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 SAU40X400H 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 SU40X400H
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×400 | 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 SU40X400H Is Used
Hot End Diverters
Actuating diverters on high-temperature conveyor lines where the Viton H seal survives up to 150C, handling parts safely within the 377N working load limit.
Oven Door Automation
Opening and closing industrial batch oven doors, utilizing the 400mm stroke and high-temp capability while requiring external guides to support the long rod.
Heated Product Ejection
Ejecting freshly molded or heated goods from packaging machinery, providing reliable 628N push force at 0.5MPa in thermally demanding environments.
Replacing the Airtac SU32~50 Standard Cylinder SU40X400H with the SAU40X400H
To replace this SU40X400H, order the SAU40X400H direct equivalent, confirming the 40mm bore, 400mm stroke, 1/4" port, M12x1.25 rod thread, and SC-series mounting (LB/FA/FB/CA/CB). Because this is a 400mm stroke, use external guides to prevent rod bending and side-load damage. If you need position sensing, the SAU requires CMSG/DMSG/EMSG switches since this no-magnet SU cannot take a sensor. For higher loads, consider the 50mm bore (982N push @0.5MPa); for lighter duty, the 32mm bore (402N). The cylinder will not hold a load without live air—use an external rod lock or pilot-operated check valve, as the 21mm adjustable cushion only decelerates. The SAUF variant integrates a 4M solenoid valve if needed.
Replacement checklist
- ✓ Same bore / stroke → SAU40X400H
- ✓ 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 SU40X400H FAQ
Yes, the AirTAC SU40X400H is discontinued and end-of-life. The direct replacement is the SAU40X400H. It shares the same 40mm bore, 400mm stroke, 628N force at 0.5MPa, 1/4" port, and SC-series mounting accessories. You can order the SAU40X400H as a direct fit.
The 40mm bore provides 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, and a theoretical max of 128kgf at 1.0MPa. Because this specific SKU lacks a magnet (-S), it cannot accept magnetic sensors. If sensing is required on the replacement SAU model, you must use the current CMSG/DMSG/EMSG switch family.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X400H
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X400H replacement — usually within 7-8 hours.