This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X125SH, 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 SU40X125SH
The AirTAC SU32~50 Standard Cylinder SU40X125SH 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 SAU40X125SH, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke125 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X125SH
- 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 SU40X125SH
The AirTAC SU40X125SH is a discontinued double-acting profile-type cylinder with a 40mm bore, 125mm stroke, and a 1/4" port. AirTAC replaced this end-of-life unit with the SAU40X125SH direct replacement, retaining the exact bore, stroke, output force, 1/4" port, and SC-series mounting compatibility.
This legacy SKU features a high-temperature Viton H seal (0-150 C) and a piston magnet for CS1-B/DS1-B switches. Upgrading to the SAU equivalent preserves the compact extruded aluminum body but moves you to current CMSG/DMSG/EMSG sensors. The SAU family also introduces the SAUF variant with a built-in 4M solenoid valve, an integrated self-switching option the original SU line never offered.
Airtac SU32~50 Standard Cylinder SU40X125SH Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X125SH |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X125SH |
| 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 SAU40X125SH 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 SAU40X125SH 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 SU40X125SH
| 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 SU40X125SH Is Used
Hot-End Part Ejection
Uses the Viton H high-temperature seal to reliably push 628 N at 0.5 MPa when ejecting molded components near heat sources up to 150 C.
Diverting at 125mm
Provides a short 125mm stroke to divert light packages on a line, matching the compact profile body to fit tight transfer spaces.
Replacing the Airtac SU32~50 Standard Cylinder SU40X125SH with the SAU40X125SH
To replace this SU40X125SH, order the SAU40X125SH: it matches the 40mm bore, 125mm stroke, M12x1.25 rod thread, 1/4" port, and SC-series mounts. Because your SKU has the -S magnet, note the sensor family changes from legacy CS1-B/DS1-B to modern CMSG/DMSG/EMSG on the SAU. Keep the -H high-temperature Viton seal for 0-150 C environments. If you need more force, the 50mm bore provides 982 N push at 0.5 MPa; if less, the 32mm bore offers 402 N. A plain cylinder does not hold load without live air (the 21mm cushion only decelerates), so add an external rod lock or pilot-operated check valve for suspended loads. At 125mm stroke, rod bending is low, but always guide the load to prevent side-load wear.
Replacement checklist
- ✓ Same bore / stroke → SAU40X125SH
- ✓ 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 SU40X125SH FAQ
Yes, the SU40X125SH is discontinued. The direct replacement is the AirTAC SAU40X125SH. It shares the same 40mm bore, 125mm stroke, 628 N force at 0.5 MPa, 1/4" port, and SC-series mounting, so it fits the same application directly.
This 40mm bore cylinder pushes 628 N and pulls 528 N at 0.5 MPa, pushes 879 N at 0.7 MPa, and reaches a max of 128 kgf at 1.0 MPa. The -S magnet on this legacy model works with CS1-B/DS1-B switches; the SAU replacement switches to CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X125SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X125SH replacement — usually within 7-8 hours.