This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X900S, 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 SU40X900S
The AirTAC SU32~50 Standard Cylinder SU40X900S is a double-acting profile-type standard cylinder with a Ø40mm bore and 900mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X900S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke900 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X900S
- 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 SU40X900S
The AirTAC SU40X900S is a discontinued double-acting profile cylinder with a 40mm bore and 900mm stroke. Delivering 628 N push force at 0.5 MPa, it features a 1/4" port and M12x1.25 rod thread. The direct replacement is the SAU40X900S, matching the bore, stroke, output force, port size, and SC-series mounting.
When upgrading to the SAU40X900S, the body dimensions remain identical, but the legacy CS1-B/DS1-B sensors on this -S magnet model are replaced by current CMSG/DMSG/EMSG switches. The SAU line also introduces a SAUF variant with a built-in 4M solenoid valve.
Airtac SU32~50 Standard Cylinder SU40X900S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X900S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X900S |
| Bore size | Ø40 mm |
| Stroke | 900 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 SAU40X900S 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 SAU40X900S 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 SU40X900S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×900 | 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 SU40X900S Is Used
Long-Stroke Diversion
Pushes packages across a 900mm conveyor lane using the 628 N push force at 0.5 MPa, guided externally to prevent rod bending.
Material Transfer Arm
Actuates a 900mm horizontal transfer arm for mid-weight parts, taking advantage of the compact profile body and adjustable cushions.
Replacing the Airtac SU32~50 Standard Cylinder SU40X900S with the SAU40X900S
To replace this SU40X900S, order the SAU40X900S direct equivalent, verifying the 40mm bore, 900mm stroke, 1/4" port, and PT/G/NPT thread choice. Because this SKU includes a magnet (-S), note that your legacy CS1-B/DS1-B switches must change to CMSG/DMSG/EMSG sensors on the new SAU cylinder. If you need integrated flow control, explore the SAUF built-in-valve option. For loads needing 879 N at 0.7 MPa, step up to a 50mm bore; if 402 N suffices, a 32mm bore works. A plain cylinder drifts on air loss—the cushion only decelerates—so add an external rod lock for holding. At 900mm, prevent rod bending by supporting the load with an external guide.
Replacement checklist
- ✓ Same bore / stroke → SAU40X900S
- ✓ 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 SU40X900S FAQ
Yes, the SU40X900S is discontinued. The direct replacement is the SAU40X900S. It shares the same 40mm bore, 900mm stroke, 1/4" port, output force, and SC-series mounting, but the SAU uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
The 40mm bore has a 1/4" port. It delivers 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, 1130 N push at 0.9 MPa, and a theoretical max of 128 kgf at 1.0 MPa.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X900S
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