This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X40H, 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 SU40X40H
The AirTAC SU32~50 Standard Cylinder SU40X40H is a double-acting profile-type standard cylinder with a Ø40mm bore and 40mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X40H, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke40 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X40H
- 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 SU40X40H
The AirTAC SU40X40H is a discontinued double-acting profile cylinder with a 40mm bore and 40mm stroke. Designed with a high-temperature Viton H seal, it handles 0 to 150 C environments while delivering 628 N push force at 0.5 MPa. Its extruded aluminum body is more compact than an ISO 15552 unit of the same bore. AirTAC replaced this EOL unit with the SAU40X40H, a direct replacement retaining the exact 1/4" port, M12x1.25 rod thread, and SC-series mounting.
Because this SKU lacks a magnet, it cannot accept a sensor. If you previously used a magnetic SU variant, note the SAU family upgrades to CMSG/DMSG/EMSG switches from the legacy CS1-B/DS1-B. Furthermore, the SAU line introduces the SAUF variant with a built-in 4M solenoid valve, an option the SU series never offered.
Airtac SU32~50 Standard Cylinder SU40X40H Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X40H |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X40H |
| Bore size | Ø40 mm |
| Stroke | 40 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 SAU40X40H 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 SAU40X40H 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 SU40X40H
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 SU40X40H Is Used
Hot End Ejection
Uses the Viton H 150 C seal to push hot molded parts out of ejection fixtures without degrading the packing.
Small Part Clamping
Provides a safe 377 N working load to hold light aluminum brackets steady during automated machining.
Divert Gate Actuation
Cycles a 40mm stroke diverting flap on a packaging line, fitting neatly into tight conveyor frames.
Replacing the Airtac SU32~50 Standard Cylinder SU40X40H with the SAU40X40H
To replace this SU40X40H, order the SAU40X40H. It is a direct match for the 40mm bore, 40mm stroke, 1/4" port, Viton H high-temp seals, and SC-series mounting accessories. Since this specific SKU has no magnet (-S), it cannot support sensing; if your application requires a switch, select an SAU40X40HS and update to the current CMSG/DMSG/EMSG sensors. When sizing, consider neighboring bores: a 32mm bore yields 402 N push at 0.5 MPa, while a 50mm bore provides 982 N. Note that a standard cylinder drifts without live air—the cushion only decelerates at stroke end—so add an external rod lock or pilot-operated check valve for secure load holding.
Replacement checklist
- ✓ Same bore / stroke → SAU40X40H
- ✓ 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 SU40X40H FAQ
Yes, the SU40X40H is discontinued. The direct replacement is the SAU40X40H. It shares the same 40mm bore, 40mm stroke, 1/4" port, Viton H high-temperature seal, and SC-series mounting, so no mechanical changes are needed.
At 0.5 MPa it provides 628 N push and 528 N pull; at 0.7 MPa it pushes 879 N, and 1130 N at 0.9 MPa, with a theoretical max of 128 kgf at 1.0 MPa. This specific SKU lacks a magnet, so it cannot accept a sensor. If you need sensing, order the SAU40X40HS version, which uses the current CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B.
Request a Quote for the SAU40X40H
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X40H replacement — usually within 7-8 hours.