This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X50STC, 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 SU40X50STC
The AirTAC Airtac SU32~50 Standard Cylinder SU40X50STC is a double-acting profile-type standard cylinder with a Ø40mm bore and 50mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X50STC, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke50 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X50STC
- 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 SU40X50STC
The AirTAC SU40X50STC is a discontinued double-acting profile-type cylinder with a 40mm bore, 50mm stroke, 1/4" port, and a TC mount interface. Delivering 628N push and 528N pull at 0.5MPa, its extruded aluminum body is more compact than an ISO 15552 unit of the same bore. AirTAC replaced it with the SAU40X50STC, a direct equivalent retaining the exact bore, stroke, force, port, and SC-series mounting.
Because this SKU includes a magnet (-S), it originally used legacy CS1-B/DS1-B switches; the SAU replacement upgrades this to the current CMSG/DMSG/EMSG sensor family. The SAU line also introduces a SAUF variant with a built-in 4M solenoid valve that the SU series lacked.
Airtac SU32~50 Standard Cylinder SU40X50STC Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X50STC |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X50STC |
| Bore size | Ø40 mm |
| Stroke | 50 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 SAU40X50STC 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 SAU40X50STC 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 SU40X50STC
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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 SU40X50STC Is Used
Package Diverting
Short 50mm stroke actuates diverter arms on a production line, with the TC mount allowing rigid center-trunnion attachment.
Stopper Gate Control
Regulates pallet flow in handling systems, where the compact profile body saves space compared to standard ISO cylinders.
Replacing the Airtac SU32~50 Standard Cylinder SU40X50STC with the SAU40X50STC
To replace this discontinued SU40X50STC, order the SAU40X50STC. Verify your 1/4" port thread (PT/G/NPT), M12x1.25 rod-end, and TC mounting accessory, which all carry over directly. If your machine relied on the -S magnet for positioning, note the required sensor swap: legacy CS1-B/DS1-B switches must change to CMSG/DMSG/EMSG on the new SAU. For force context, this 40mm bore yields 628N push at 0.5MPa; if you need less force, a 32mm bore provides 402N, while a 50mm bore offers 982N. Remember that a standard cylinder drifts without live air—the cushions only decelerate near stroke end—so fit an external rod lock or pilot-operated check valve if the load must be held. If pneumatics need local control, explore the SAUF valve-integrated option.
Replacement checklist
- ✓ Same bore / stroke → SAU40X50STC
- ✓ 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 SU40X50STC FAQ
Yes, the AirTAC SU40X50STC is discontinued. The direct replacement is the SAU40X50STC. It shares the identical 40mm bore, 50mm stroke, 1/4" port, output force, and SC-series TC mounting, so it fits the same application directly.
This double-acting cylinder provides 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, and a theoretical max of 128kgf at 1.0MPa. Because this is an -S magnet model, it used legacy CS1-B/DS1-B switches; the SAU replacement requires the newer CMSG/DMSG/EMSG sensor family.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X50STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X50STC replacement — usually within 7-8 hours.