This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X300SH, 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 SU40X300SH
The AirTAC SU32~50 Standard Cylinder SU40X300SH is a double-acting profile-type standard cylinder with a Ø40mm bore and 300mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X300SH, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke300 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X300SH
- 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 SU40X300SH
The AirTAC SU40X300SH is a discontinued double-acting profile cylinder with a 40mm bore and 300mm stroke. It delivers 628 N push and 528 N pull at 0.5 MPa, operating on a 1/4" port with a 16mm rod. AirTAC replaced this end-of-life unit with the SAU40X300SH, a direct upgrade retaining the exact bore, stroke, force, port, and SC-series mounting.
The SAU replacement modernizes the sensor groove to accept current CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B reed sensors used here. It also introduces the SAUF valve-integrated option, which the SU line lacked. This -H variant uses Viton FKM seals for 0-150 C high-temperature environments.
Airtac SU32~50 Standard Cylinder SU40X300SH Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X300SH |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X300SH |
| Bore size | Ø40 mm |
| Stroke | 300 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 SAU40X300SH 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 SAU40X300SH 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 SU40X300SH
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×300 | 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 SU40X300SH Is Used
Hot Product Diversion
Actuates routing gates on high-temperature conveyor lines, using the Viton FKM seals to withstand ambient heat near ovens while pushing packages with a safe 377 N working load.
Heated Tool Ejection
Ejects molded or thermoformed parts from warm tooling, where the 300mm stroke clears the press bed and the high-temp seals resist thermal degradation over continuous cycles.
Replacing the Airtac SU32~50 Standard Cylinder SU40X300SH with the SAU40X300SH
To replace this discontinued SU40X300SH, order the SAU40X300SH direct equivalent. Verify your 1/4" port thread (PT, G, or NPT), M12x1.25 rod end, and SC-series mounting (LB/FA/FB/CA/CB/TC). Because this unit has the -S magnet, note that your old CS1-B/DS1-B switches are obsolete and you must migrate to CMSG/DMSG/EMSG sensors on the SAU body. The -H Viton seal provides 0-150 C heat resistance. For the 300mm stroke, prevent rod bending by using an external guide rail to absorb side loads. If you need more force, the 50mm bore yields 982 N push at 0.5 MPa; if less is acceptable, the 32mm bore provides 402 N. Remember, the adjustable 21mm cushions only decelerate the piston near stroke end—they do not hold the load. For secure holding on air loss, install an external rod lock or pilot-operated check valve.
Replacement checklist
- ✓ Same bore / stroke → SAU40X300SH
- ✓ 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 SU40X300SH FAQ
Yes, the AirTAC SU40X300SH is discontinued. The direct replacement is the SAU40X300SH. It matches the 40mm bore, 300mm stroke, 628 N push force at 0.5 MPa, 1/4" port, and SC-series mounting. You simply order the SAU equivalent.
The 40mm bore provides 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, and a theoretical max of 128 kgf at 1.0 MPa. Because this SKU includes the -S magnet, it used legacy CS1-B/DS1-B switches; the SAU replacement requires upgrading to current CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X300SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X300SH replacement — usually within 7-8 hours.