This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X125SCA, 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 SU40X125SCA
The AirTAC SU32~50 Standard Cylinder SU40X125SCA is a double-acting profile-type standard cylinder with a Ø40mm bore and 125mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X125SCA, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke125 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X125SCA
- 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 SU40X125SCA
The AirTAC SU40X125SCA is a discontinued double-acting profile cylinder with a 40 mm bore and 125 mm stroke. It delivers 628 N push force at 0.5 MPa through a 1/4" port. AirTAC replaced this unit with the SAU40X125SCA, a direct replacement retaining the exact bore, stroke, output force, port size, and SC-series CA mounting interface.
When upgrading, note the SAU body uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches found on this SU model. The extruded aluminum profile is more compact than an ISO 15552 cylinder of the same bore.
Airtac SU32~50 Standard Cylinder SU40X125SCA Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X125SCA |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X125SCA |
| Bore size | Ø40 mm |
| Stroke | 125 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 SAU40X125SCA 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 SAU40X125SCA 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 SU40X125SCA
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×125 | 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 SU40X125SCA Is Used
Clamping Mechanisms
Secures medium workpieces during machining, utilizing the 628 N push force at 0.5 MPa for rigid holding without deflection.
Package Diverting
Actuates routing gates on 40 mm belt lines, where the compact profile body saves space and the 125 mm stroke clears the lane.
Vertical Lift Stops
Raises lightweight product stops up to 32 kg against gravity, benefiting from the 21 mm adjustable air cushions at both ends.
Replacing the Airtac SU32~50 Standard Cylinder SU40X125SCA with the SAU40X125SCA
To replace the SU40X125SCA, order the SAU40X125SCA and verify your 1/4" port threads (PT, G, or NPT) and the SC-series CA mounting accessory. Because this SKU includes the -S magnet, prepare to swap legacy CS1-B/DS1-B switches for modern CMSG/DMSG/EMSG sensors. For higher force demands, consider the 50 mm bore (982 N push @0.5 MPa); for lighter loads, the 32 mm bore offers 402 N. A plain cylinder drifts without live air, so add an external rod lock or pilot-operated check valve for secure load holding. The SAUF variant with a built-in 4M solenoid valve is also available if you need self-switching. At 125 mm stroke, side-load risks are low, but always guide the rod to prevent bending.
Replacement checklist
- ✓ Same bore / stroke → SAU40X125SCA
- ✓ 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 SU40X125SCA FAQ
Yes, the AirTAC SU40X125SCA is discontinued. The direct replacement is the SAU40X125SCA. It matches the 40 mm bore, 125 mm stroke, 628 N force, 1/4" port, and SC-series CA mounting, so it fits the same application directly.
The 40 mm bore provides 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, and a 128 kgf maximum at 1.0 MPa. Because this model has the -S magnet, it used CS1-B/DS1-B switches; the SAU replacement requires CMSG/DMSG/EMSG sensors instead.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X125SCA
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X125SCA replacement — usually within 7-8 hours.