This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X125, 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 SU40X125
The AirTAC SU32~50 Standard Cylinder SU40X125 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 SAU40X125, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke125 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X125
- 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 SU40X125
The AirTAC SU40X125 is a discontinued double-acting profile-type cylinder with a 40mm bore and 125mm stroke. It delivers 628N push and 528N pull at 0.5MPa via a 1/4" port. The direct replacement is the SAU40X125, matching the bore, stroke, output force, port size, and SC-series mounting for a seamless upgrade.
This extruded aluminium body is more compact than an ISO 15552 equivalent. As a non-magnet SKU, it cannot accept sensors; furthermore, the SAU upgrade switches to CMSG/DMSG/EMSG switches and adds a SAUF built-in-valve option.
Airtac SU32~50 Standard Cylinder SU40X125 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X125 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X125 |
| 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 SAU40X125 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 SAU40X125 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 SU40X125
| 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 SU40X125 Is Used
Package Diverting
Actuates routing gates along production lines using a compact 125mm stroke.
Replacing the Airtac SU32~50 Standard Cylinder SU40X125 with the SAU40X125
To replace this discontinued SU40X125, order the SAU40X125 direct equivalent, verifying your 1/4" port, M12x1.25 rod thread, and SC-series mounting. If sizing alternatives, the neighbouring 32mm bore yields 402N push at 0.5MPa, while the 50mm bore provides 982N. For this 125mm stroke, ensure adequate guidance to prevent rod bending. Because this non-magnet SKU cannot accept a sensor, and the SAU uses CMSG/DMSG/EMSG switches, confirm if sensing is required. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock for held loads.
Replacement checklist
- ✓ Same bore / stroke → SAU40X125
- ✓ 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 SU40X125 FAQ
Yes, the AirTAC SU40X125 is discontinued. The direct replacement is the SAU40X125. It shares the identical 40mm bore, 125mm stroke, 628N force at 0.5MPa, 1/4" port, and SC-series mounting, fitting the same application.
It delivers 628N push and 528N pull at 0.5MPa, 879N at 0.7MPa, and a 128kgf max at 1.0MPa. This specific SKU lacks a magnet and cannot take a sensor. The SAU replacement supports CMSG/DMSG/EMSG switches.
Request a Quote for the SAU40X125
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X125 replacement — usually within 7-8 hours.