This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X125SH, 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 SU50X125SH
The AirTAC SU32~50 Standard Cylinder SU50X125SH is a double-acting profile-type standard cylinder with a Ø50mm bore and 125mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X125SH, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke125 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X125SH
- 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 SU50X125SH
The AirTAC SU50X125SH is a discontinued double-acting profile-type cylinder with a 50mm bore, 125mm stroke, and a Viton H high-temperature seal (0-150 C). It delivers 982 N push force at 0.5 MPa through a 1/4" port. AirTAC replaced this unit with the SAU50X125SH, a direct upgrade retaining the exact bore, stroke, output force, port size, and SC-series mounting.
The SAU replacement modernizes the sensor groove: your original -S magnet worked with legacy CS1-B/DS1-B switches, but the SAU uses current CMSG/DMSG/EMSG sensors. The SAU line also introduces a SAUF variant with a built-in 4M solenoid valve the SU never had.
Airtac SU32~50 Standard Cylinder SU50X125SH Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X125SH |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X125SH |
| Bore size | Ø50 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M16×1.5 |
| 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 SAU50X125SH carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAU50X125SH 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 SU50X125SH
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | 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 SU50X125SH Is Used
Hot-End Part Ejection
Uses the Viton H seal to withstand 150 C ambient heat while pushing molded components off a press bed with 982 N of force.
Heat-Shrink Diverting
Actuates a routing gate along a packaging line, benefiting from the compact profile body and adjustable end cushions.
Oven Door Latching
Secures and releases an industrial thermal oven door, where the high-temp seal prevents premature degradation.
Replacing the Airtac SU32~50 Standard Cylinder SU50X125SH with the SAU50X125SH
To replace this SU50X125SH, order the SAU50X125SH. Verify your 1/4" port thread (PT, G, or NPT) and M16x1.5 rod-end connection. Because this SKU includes the -S magnet, you must upgrade your legacy CS1-B/DS1-B switches to the CMSG/DMSG/EMSG family. If dropping to a 40mm bore yields insufficient force (628 N push @0.5 MPa), keep the 50mm; stepping up to 63mm provides 1559 N if your 50mm wears out. The Viton H seal handles 0-150 C environments. Remember, the air cushion only decelerates the piston; it does not hold loads on air loss—install an external rod lock or pilot-operated check valve for vertical holding. The 125mm stroke is under the 300mm threshold, so rod-bending side-load risks are minimal.
Replacement checklist
- ✓ Same bore / stroke → SAU50X125SH
- ✓ 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 SU50X125SH FAQ
Yes, the SU50X125SH is discontinued. The direct replacement is the AirTAC SAU50X125SH. It matches the 50mm bore, 125mm stroke, 1/4" port, 200 kgf max force, and SC-series mounting. You must upgrade your -S magnet sensors from the old CS1-B/DS1-B to the modern CMSG/DMSG/EMSG family.
The 50mm bore generates 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and 1767 N at 0.9 MPa, with a theoretical max of 200 kgf at 1.0 MPa. The standard temperature range is -20 to +70 C, but the -H Viton seal on this unit extends the operating range up to 150 C.
Related AirTAC SAU Cylinders
Request a Quote for the SAU50X125SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X125SH replacement — usually within 7-8 hours.