This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X155, 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 SU40X155
The AirTAC Airtac SU32~50 Standard Cylinder SU40X155 is a double-acting profile-type standard cylinder with a Ø40mm bore and 155mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X155, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke155 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X155
- 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 SU40X155
The AirTAC SU40X155 is a discontinued double-acting profile-type cylinder with a 40mm bore and 155mm stroke. Because 155mm is not a standard factory stroke, it is a nonstandard configuration. This cylinder delivers 628N push and 528N pull at 0.5MPa, utilizing a 1/4" port and a 16mm piston rod. AirTAC replaced the SU line with the SAU family, making the SAU40X155 the direct replacement. It retains the identical body profile, stroke, output force, 1/4" port, and SC-series mounting accessories, so it fits your existing setup perfectly.
The SAU upgrade introduces current CMSG/DMSG/EMSG sensors, whereas this legacy SU used CS1-B/DS1-B switches. Additionally, the SAU line offers a SAUF variant with a built-in 4M solenoid valve that the SU never had. Note that this specific SKU lacks a magnet and cannot accept a sensor.
Airtac SU32~50 Standard Cylinder SU40X155 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X155 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X155 |
| Bore size | Ø40 mm |
| Stroke | 155 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 SAU40X155 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 SAU40X155 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 SU40X155
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×155 | 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 SU40X155 Is Used
Clamp Actuation
Provides 628N of push force at 0.5MPa, ideal for securing medium workpieces during machining or welding operations.
Package Diverting
The 155mm nonstandard stroke offers precise travel for pushing cartons off a belt without overshooting the target zone.
Replacing the Airtac SU32~50 Standard Cylinder SU40X155 with the SAU40X155
To replace the discontinued SU40X155, order the SAU40X155. Confirm your 1/4" port thread (PT, G, or NPT) and SC-series mounting type (LB, FA, FB, CA, CB, or TC). Because this is a nonstandard 155mm stroke, verify the exact extended length. If sizing alternatives, the neighboring 32mm bore yields 402N push at 0.5MPa, while the 50mm bore provides 982N. This non-magnetic SKU cannot accept a sensor; if you need position detection, the SAU replacement requires CMSG/DMSG/EMSG switches. For load holding, a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot-operated check valve. At 155mm stroke, side-load is minimal, but always guide the rod to prevent bending. The SAUF built-in-valve option is useful if you want to simplify piping.
Replacement checklist
- ✓ Same bore / stroke → SAU40X155
- ✓ 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 SU40X155 FAQ
Yes, the AirTAC SU40X155 is discontinued. The direct replacement is the SAU40X155. It shares the same 40mm bore, 155mm stroke, 628N force at 0.5MPa, 1/4" port, and SC-series mounting, so it drops directly into your existing application.
This double-acting cylinder delivers 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, 1130N at 0.9MPa, and a theoretical max of 128kgf at 1.0MPa. This specific SKU has no magnet and cannot take a sensor. If you need sensing, the SAU replacement uses CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B.
Request a Quote for the SAU40X155
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X155 replacement — usually within 7-8 hours.