This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X75CA, 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 SU40X75CA
The AirTAC Airtac SU32~50 Standard Cylinder SU40X75CA is a double-acting profile-type standard cylinder with a Ø40mm bore and 75mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X75CA, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke75 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X75CA
- 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 SU40X75CA
The AirTAC SU40X75CA is a discontinued double-acting profile-type cylinder with a 40mm bore and 75mm stroke. It delivers 628N push and 528N pull at 0.5MPa, utilizing a 1/4" port and an M12x1.25 rod thread. AirTAC replaced this end-of-line unit with the SAU40X75CA, a direct replacement retaining the exact bore, stroke, output force, port size, and SC-series CA mounting accessory.
Because the body is an extruded aluminum profile rather than a conventional tie-rod design, it is shorter and more compact than an ISO 15552 cylinder of the same bore. This specific SKU lacks a magnet, so it cannot accept a magnetic sensor. Note that the SAU upgrade switches to CMSG/DMSG/EMSG sensors and introduces a SAUF built-in-valve option the SU line never had.
Airtac SU32~50 Standard Cylinder SU40X75CA Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X75CA |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X75CA |
| Bore size | Ø40 mm |
| Stroke | 75 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 SAU40X75CA 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 SAU40X75CA 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 SU40X75CA
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 SU40X75CA Is Used
Clamp Actuation
Provides 628N of push force at 0.5MPa, ideal for securing medium workpieces during machining or welding operations.
Package Diverting
Uses the 75mm stroke to push lightweight to medium cartons off a main conveyor belt into a secondary sorting lane.
Gate Control
Operates mechanical swing gates or lightweight access doors in automated material handling and storage zones.
Replacing the Airtac SU32~50 Standard Cylinder SU40X75CA with the SAU40X75CA
To replace this discontinued SU40X75CA, order the SAU40X75CA. Confirm the 40mm bore, 75mm stroke, 1/4" port (default PT thread), and the CA clevis mounting interface are correct for your machine. Since this cylinder has no magnet (-S), it cannot support sensing; if you need position detection on the SAU, you must add the S option and use CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B. If your application requires holding a load without live air, note that the adjustable 21mm air cushion only decelerates the piston near stroke end—it does not lock. Install an external rod lock or pilot-operated check valve for secure load holding. If you need to size both ways, a 32mm bore yields 402N push at 0.5MPa, while a 50mm bore yields 982N push at 0.5MPa.
Replacement checklist
- ✓ Same bore / stroke → SAU40X75CA
- ✓ 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 SU40X75CA FAQ
Yes, the SU40X75CA is discontinued. The direct replacement is the AirTAC SAU40X75CA. It shares the identical 40mm bore, 75mm stroke, 1/4" port, and CA mounting, so it fits the same application without modifications.
At 0.5MPa it provides 628N push and 528N pull; at 0.7MPa it provides 879N push, and the theoretical maximum is 128kgf at 1.0MPa. Because this specific SKU lacks a magnet, it cannot accept a sensor. If sensing is required on the SAU replacement, you must order the -S version and use CMSG/DMSG/EMSG switches.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X75CA
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X75CA replacement — usually within 7-8 hours.