This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X950S, 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 SU40X950S
The AirTAC Airtac SU32~50 Standard Cylinder SU40X950S is a double-acting profile-type standard cylinder with a Ø40mm bore and 950mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X950S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke950 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X950S
- 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 SU40X950S
The AirTAC SU40X950S is a discontinued double-acting profile-type cylinder with a 40mm bore and 950mm stroke. Delivering 628 N push force at 0.5 MPa, it features a 1/4" port and an extruded aluminum barrel that is more compact than an ISO 15552 unit of the same bore. AirTAC replaced this EOL unit with the SAU40X950S, a direct replacement retaining the exact bore, stroke, output force, port size, and SC-series mounting.
The -S magnet on this legacy model paired with CS1-B/DS1-B switches, whereas the SAU replacement utilizes current CMSG/DMSG/EMSG sensors. Additionally, the SAU family introduces a SAUF variant with a built-in 4M solenoid valve that the SU line lacked.
Airtac SU32~50 Standard Cylinder SU40X950S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X950S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X950S |
| Bore size | Ø40 mm |
| Stroke | 950 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 SAU40X950S 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 SAU40X950S 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 SU40X950S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×950 | 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 SU40X950S Is Used
Vertical Material Lift
Raises lightweight bins up to 32 kg through a 950mm vertical travel path, requiring an external guide to prevent rod bending on the 40mm bore.
Linear Actuation Gate
Actuates a distant equipment safety gate over a 950mm span, taking advantage of the compact profile body to save machine footprint.
Replacing the Airtac SU32~50 Standard Cylinder SU40X950S with the SAU40X950S
To replace this SU40X950S, order the SAU40X950S, confirming the 40mm bore, 950mm stroke, 1/4" port (default PT thread), and M12x1.25 rod-end thread. Because this is a 950mm stroke, you must support the load with an external guide to prevent rod bending and premature seal wear from side loads. When sizing, note the 32mm bore offers 402 N push @0.5 MPa, while the 50mm bore provides 982 N; this 40mm bore gives 628 N push and 528 N pull @0.5 MPa. A plain cylinder will not hold a load on air loss—the 21mm cushions only decelerate near stroke end—so use an external rod lock or pilot-operated check valve for held loads. Finally, if ordering the SAU, remember your -S magnet requires switching to CMSG/DMSG/EMSG sensors, or you can explore the SAUF valve-integrated option.
Replacement checklist
- ✓ Same bore / stroke → SAU40X950S
- ✓ 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 SU40X950S FAQ
Yes, the SU40X950S is discontinued and end-of-life. The direct replacement is the AirTAC SAU40X950S. It features the same 40mm bore, 950mm stroke, 628 N output force at 0.5 MPa, 1/4" port, and SC-series mounting accessories, so it fits the same application directly.
The 40mm bore provides 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, and a maximum theoretical force of 128 kgf at 1.0 MPa. Because your SU40X950S has a -S magnet, note that the legacy CS1-B/DS1-B switches are obsolete; the SAU replacement uses the current CMSG/DMSG/EMSG sensor family.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X950S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X950S replacement — usually within 7-8 hours.