This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X900, 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 SU40X900
The AirTAC SU32~50 Standard Cylinder SU40X900 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 SAU40X900, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke900 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X900
- 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 SU40X900
The AirTAC SU40X900 is a discontinued double-acting profile-type cylinder with a 40mm bore and 900mm stroke. It delivers 628N push force at 0.5MPa via a 1/4" port. AirTAC replaced this unit with the SAU40X900, a direct upgrade retaining the exact body, stroke, force, and SC-series mounting.
The SAU upgrade uses current CMSG/DMSG/EMSG sensors, whereas this legacy SU lacked a magnet entirely and cannot accept sensing. The SAU line also introduces a SAUF built-in-valve variant.
Airtac SU32~50 Standard Cylinder SU40X900 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X900 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X900 |
| 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 SAU40X900 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 SAU40X900 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 SU40X900
| 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 SU40X900 Is Used
Material Ejection
Cycles formed parts out of a machine bed over a 900mm distance, utilizing the 21mm adjustable air cushions to decelerate the 16mm rod at stroke ends.
Replacing the Airtac SU32~50 Standard Cylinder SU40X900 with the SAU40X900
To replace the SU40X900, order the SAU40X900, confirming the 40mm bore, 900mm stroke, 1/4" port, M12x1.25 rod thread, and SC-series mounts. Because this SKU lacks a magnet (-S), it cannot accept a sensor. If sensing is needed, the SAU replacement requires CMSG/DMSG/EMSG switches. For the 900mm stroke, use external guides to prevent rod bending and side-load wear. Note that a plain cylinder drifts on air loss; use an external rod lock or pilot-operated check valve to hold loads. If you need more force, the 50mm bore offers 982N push at 0.5MPa, while the 32mm bore provides 402N. The SAUF valve-integrated option can simplify cycling.
Replacement checklist
- ✓ Same bore / stroke → SAU40X900
- ✓ 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 SU40X900 FAQ
Yes, the SU40X900 is discontinued. The direct replacement is the AirTAC SAU40X900. It matches the 40mm bore, 900mm stroke, 628N force at 0.5MPa, 1/4" port, and SC-series mounting accessories.
At 0.5MPa it pushes 628N and pulls 528N; at 0.7MPa it pushes 879N, and 1130N at 0.9MPa, with a theoretical max of 128kgf at 1.0MPa. This specific SKU lacks a magnet, so it cannot accept legacy CS1-B/DS1-B sensors; the SAU replacement uses CMSG/DMSG/EMSG switches.
Request a Quote for the SAU40X900
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X900 replacement — usually within 7-8 hours.